Information is a resource for Native American governments, communities, organizations, and people. The U.S. Geological Survey (USGS) provides technical expertise, reports, and other impartial information sources that benefit Native Americans interested in subsistence issues, water, resources and land use, and the health of many parts of the environment. Native decisions based in USGS data and analyses support the goals of Native self-sufficiency, economic development, and conservation.
The USGS works in cooperation with American Indian and Alaska Native governments, conducting research on: water energy and mineral resources; animals and plants of environmental, economic, or subsistence importance; and natural hazards. Digital data on cartography, energy and mineral resources, streamflow, biota, and other topics are available to American Indian and Alaska Native individuals and institutions. The USGS also recognizes the need to learn from and share knowledge with Native peoples. This report describes most of the activities that the USGS conducted with American Indian and Alaska Native governments, educational institutions, and individuals during Federal fiscal year (FY) 2003. Some of these USGS activities were conducted cooperatively with the Bureau of Indian Affairs (BIA) or other Federal entities. Others were collaborations with Tribes, Tribal organizations, and professional societies.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/70038034","usgsCitation":"Water Resources Division, U.S. Geological Survey, 2003, U.S. Geological Survey Activities Related to American Indians and Alaska Natives Fiscal Year 2003, xii, 72 p., https://doi.org/10.3133/70038034.","productDescription":"xii, 72 p.","costCenters":[],"links":[{"id":254492,"rank":299,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/amerind/2003report/otr2003-report.pdf","text":"Report","size":"20.8 MB","linkFileType":{"id":1,"text":"pdf"}},{"id":254497,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/amerind/2003report/coverthb.jpg"}],"contact":"National Tribal Liaison
Office of Tribal Relations
U.S. Geological Survey
12201 Sunrise Valley Drive
Mail Stop 911
Reston, VA 20192
No abstract available.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr0336","usgsCitation":"Waythomas, C.F., Miller, T.P., and Nye, C., 2003, Preliminary geologic map of Great Sitkin Volcano, Alaska: U.S. Geological Survey Open-File Report 2003-36, 1 Plate: 38.00 × 25.00 inches, https://doi.org/10.3133/ofr0336.","productDescription":"1 Plate: 38.00 × 25.00 inches","costCenters":[{"id":121,"text":"Alaska Volcano Observatory","active":false,"usgs":true},{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":178210,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr0336.jpg"},{"id":398353,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_62468.htm"},{"id":283918,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2003/0036/"},{"id":283917,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2003/0036/pdf/of03-36.pdf"}],"scale":"63360","projection":"UTM Projection","country":"United States","state":"Alaska","otherGeospatial":"Great Sitkin Island, Great Sitkin Volcano","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -176.2,\n 51.9458\n ],\n [\n -175.9667,\n 51.9458\n ],\n [\n -175.9667,\n 52.1167\n ],\n [\n -176.2,\n 52.1167\n ],\n [\n -176.2,\n 51.9458\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac8e4b07f02db67c044","contributors":{"authors":[{"text":"Waythomas, Christopher F. 0000-0002-3898-272X cwaythomas@usgs.gov","orcid":"https://orcid.org/0000-0002-3898-272X","contributorId":640,"corporation":false,"usgs":true,"family":"Waythomas","given":"Christopher","email":"cwaythomas@usgs.gov","middleInitial":"F.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":247986,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Miller, Thomas P. tmiller@usgs.gov","contributorId":4183,"corporation":false,"usgs":true,"family":"Miller","given":"Thomas","email":"tmiller@usgs.gov","middleInitial":"P.","affiliations":[{"id":121,"text":"Alaska Volcano Observatory","active":false,"usgs":true}],"preferred":false,"id":247987,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nye, Christopher","contributorId":95328,"corporation":false,"usgs":true,"family":"Nye","given":"Christopher","affiliations":[],"preferred":false,"id":247988,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":53646,"text":"wri034095 - 2003 - Mass balance, meteorology, area altitude distribution, glacier-surface altitude, ice motion, terminus position, and runoff at Gulkana Glacier, Alaska, 1996 balance year","interactions":[],"lastModifiedDate":"2012-02-02T00:11:44","indexId":"wri034095","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2003-4095","title":"Mass balance, meteorology, area altitude distribution, glacier-surface altitude, ice motion, terminus position, and runoff at Gulkana Glacier, Alaska, 1996 balance year","docAbstract":"The 1996 measured winter snow, maximum winter snow, net, and annual balances in the Gulkana Glacier Basin were evaluated on the basis of meteorological, hydrological, and glaciological data. Averaged over the glacier, the measured winter snow balance was 0.87 meter on April 18, 1996, 1.1 standard deviation below the long-term average; the maximum winter snow balance, 1.06 meters, was reached on May 28, 1996; and the net balance (from August 30, 1995, to August 24, 1996) was -0.53 meter, 0.53 standard deviation below the long-term average. The annual balance (October 1, 1995, to September 30, 1996) was -0.37 meter. Area-averaged balances were reported using both the 1967 and 1993 area altitude distributions (the numbers previously given in this abstract use the 1993 area altitude distribution). Net balance was about 25 percent less negative using the 1993 area altitude distribution than the 1967 distribution. \r\n\r\nAnnual average air temperature was 0.9 degree Celsius warmer than that recorded with the analog sensor used since 1966. Total precipitation catch for the year was 0.78 meter, 0.8 standard deviations below normal. The annual average wind speed was 3.5 meters per second in the first year of measuring wind speed. Annual runoff averaged 1.50 meters over the basin, 1.0 standard deviation below the long-term average. \r\n\r\nGlacier-surface altitude and ice-motion changes measured at three index sites document seasonal ice-speed and glacier-thickness changes. Both showed a continuation of a slowing and thinning trend present in the 1990s.\r\n\r\nThe glacier terminus and lower ablation area were defined for 1996 with a handheld Global Positioning System survey of 126 locations spread out over about 4 kilometers on the lower glacier margin. From 1949 to 1996, the terminus retreated about 1,650 meters for an average retreat rate of 35 meters per year.","language":"ENGLISH","doi":"10.3133/wri034095","usgsCitation":"March, R.S., 2003, Mass balance, meteorology, area altitude distribution, glacier-surface altitude, ice motion, terminus position, and runoff at Gulkana Glacier, Alaska, 1996 balance year: U.S. Geological Survey Water-Resources Investigations Report 2003-4095, 33 p., https://doi.org/10.3133/wri034095.","productDescription":"33 p.","costCenters":[],"links":[{"id":4945,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.water.usgs.gov/wri034095/","linkFileType":{"id":5,"text":"html"}},{"id":175164,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a26e4b07f02db60fd7a","contributors":{"authors":[{"text":"March, Rod S. rsmarch@usgs.gov","contributorId":416,"corporation":false,"usgs":true,"family":"March","given":"Rod","email":"rsmarch@usgs.gov","middleInitial":"S.","affiliations":[],"preferred":true,"id":247985,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":53649,"text":"ofr03112 - 2003 - Preliminary volcano-hazard assessment for Great Sitkin Volcano, Alaska","interactions":[],"lastModifiedDate":"2022-10-14T19:41:47.871273","indexId":"ofr03112","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2003-112","title":"Preliminary volcano-hazard assessment for Great Sitkin Volcano, Alaska","docAbstract":"Great Sitkin Volcano is a composite andesitic stratovolcano on Great Sitkin Island (51°05’ N latitude, 176°25’ W longitude), a small (14 x 16 km), circular volcanic island in the western Aleutian Islands of Alaska. Great Sitkin Island is located about 35 kilometers northeast of the community of Adak on Adak Island and 130 kilometers west of the community of Atka on Atka Island. Great Sitkin Volcano is an active volcano and has erupted at least eight times in the past 250 years (Miller and others, 1998). The most recent eruption in 1974 caused minor ash fall on the flanks of the volcano and resulted in the emplacement of a lava dome in the summit crater.
\nThe summit of the composite cone of Great Sitkin Volcano is 1,740 meters above sea level. The active crater is somewhat lower than the summit, and the highest point along its rim is about 1,460 meters above sea level. The crater is about 1,000 meters in diameter and is almost entirely filled by a lava dome emplaced in 1974. An area of active fumaroles, hot springs, and bubbling hot mud is present on the south flank of the volcano at the head of Big Fox Creek (see the map), and smaller ephemeral fumaroles and steam vents are present in the crater and around the crater rim. The flanking slopes of the volcano are gradual to steep and consist of variously weathered and vegetated blocky lava flows that formed during Pleistocene and Holocene eruptions. The modern edifice occupies a caldera structure that truncates an older sequence of lava flows and minor pyroclastic rocks on the east side of the volcano. The eastern sector of the volcano includes the remains of an ancestral volcano that was partially destroyed by a northwest-directed flank collapse.
\nIn winter, Great Sitkin Volcano is typically completely snow covered. Should explosive pyroclastic eruptions occur at this time, the snow would be a source of water for volcanic mudflows or lahars. In summer, much of the snowpack melts, leaving only a patchy distribution of snow on the volcano. Glacier ice is no longer present on the volcano or on other parts of Great Sitkin Island as previously reported by Simons and Mathewson (1955).
\nGreat Sitkin Island is presently uninhabited and is part of the Alaska Maritime National Wildlife Refuge, managed by the U.S. Fish and Wildlife Service.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Anchorage, AK","doi":"10.3133/ofr03112","usgsCitation":"Waythomas, C.F., Miller, T.P., and Nye, C.J., 2003, Preliminary volcano-hazard assessment for Great Sitkin Volcano, Alaska: U.S. Geological Survey Open-File Report 2003-112, Report: iv, 25 p.; 1 Plate: 29.0 x 22.0 inches, https://doi.org/10.3133/ofr03112.","productDescription":"Report: iv, 25 p.; 1 Plate: 29.0 x 22.0 inches","numberOfPages":"32","additionalOnlineFiles":"Y","costCenters":[{"id":121,"text":"Alaska Volcano Observatory","active":false,"usgs":true},{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true},{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"links":[{"id":178212,"rank":2,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":408346,"rank":5,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_62429.htm","linkFileType":{"id":5,"text":"html"}},{"id":283925,"rank":0,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2003/0112/pdf/of03-112plate.pdf","text":"Plate","linkFileType":{"id":1,"text":"pdf"}},{"id":4947,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2003/0112/","linkFileType":{"id":5,"text":"html"}},{"id":283924,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2003/0112/pdf/of03-112.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Alaska","otherGeospatial":"Great Sitkin Volcano","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -176.26190185546875,\n 51.964577109947506\n ],\n [\n -175.97076416015622,\n 51.964577109947506\n ],\n [\n -175.97076416015622,\n 52.12168505384983\n ],\n [\n -176.26190185546875,\n 52.12168505384983\n ],\n [\n -176.26190185546875,\n 51.964577109947506\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49d5e4b07f02db5dd976","contributors":{"authors":[{"text":"Waythomas, Christopher F. 0000-0002-3898-272X cwaythomas@usgs.gov","orcid":"https://orcid.org/0000-0002-3898-272X","contributorId":640,"corporation":false,"usgs":true,"family":"Waythomas","given":"Christopher","email":"cwaythomas@usgs.gov","middleInitial":"F.","affiliations":[{"id":617,"text":"Volcano Science Center","active":true,"usgs":true}],"preferred":true,"id":511522,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Miller, Thomas P. tmiller@usgs.gov","contributorId":4183,"corporation":false,"usgs":true,"family":"Miller","given":"Thomas","email":"tmiller@usgs.gov","middleInitial":"P.","affiliations":[{"id":121,"text":"Alaska Volcano Observatory","active":false,"usgs":true}],"preferred":false,"id":511523,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nye, Christopher J.","contributorId":55418,"corporation":false,"usgs":true,"family":"Nye","given":"Christopher","email":"","middleInitial":"J.","affiliations":[{"id":121,"text":"Alaska Volcano Observatory","active":false,"usgs":true}],"preferred":false,"id":511524,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":53650,"text":"ofr03113 - 2003 - Preliminary geologic map of Kanaga Volcano, Alaska","interactions":[],"lastModifiedDate":"2014-03-13T10:59:24","indexId":"ofr03113","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2003-113","title":"Preliminary geologic map of Kanaga Volcano, Alaska","docAbstract":"Kanaga Volcano is a 1,300 m (4,287-foot) high, historically active cone-shaped stratovolcano located on the north end of Kanaga Island in the Andreanof Islands Group of the Aleutian Islands. The volcano is undissected, symmetrical in profile, and is characterized by blocky andesitic lava flows, with well-developed levees and steep flow fronts, that emanate radially from, or near, the 200-m-wide summit crater. The lack of dissection of the cone suggests the entire edifice was constructed in post-glacial Holocene time. Historical eruptions were reported in 1791, 1827, 1829, 1904-1906, and 1993-95 (Miller and others, 1998); questionable eruptions occurred in 1763, 1768, 1786, 1790, and 1933. The upper flanks of the cone are very steep (>30°) and flows moving down these steep flows commonly fragment into breccias and lahars. A non-vegetated lahar, or group of lahars, extends from high on the southeast flank of the cone down to the northeast shore of the intracaldera lake. This lahar deposit was observed in 1999 but does not appear to be present on aerial photos taken in 1974 and is assumed to be part of the 1994-95 eruption.
\nMost recent eruptions of Kanag a, including the 1994-95 eruption, were primarily effusive in character with a subordinate explosive component. Lava was extruded from, or near, the summit vent and moved down the flank of the cone in some cases reaching the ocean. In 1994, lava flows going down the very steep north and west flanks broke up into incandescent avalanches tumbling over steep truncated sea cliffs into the Bering Sea. A common feature of Kanaga central vent eruptions is the occurrence of widespread ballistics and accompanying craters. Steam and fine ash plumes rose to 7.5 km ASL and drifted a few tens of kilometers downwind. Plumes such as these are unlikely to deposit significant (i.e., sufficiently thick to leave a permanent record) tephras on other islands downwind.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr03113","usgsCitation":"Miller, T.P., Waythomas, C.F., and Nye, C., 2003, Preliminary geologic map of Kanaga Volcano, Alaska: U.S. Geological Survey Open-File Report 2003-113, 2 Sheets: 38.0 x 25.0 inches, https://doi.org/10.3133/ofr03113.","productDescription":"2 Sheets: 38.0 x 25.0 inches","additionalOnlineFiles":"Y","costCenters":[{"id":615,"text":"Volcano Hazards Program","active":true,"usgs":true}],"links":[{"id":110468,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_62430.htm","linkFileType":{"id":5,"text":"html"},"description":"62430"},{"id":178299,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":4948,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2003/0113/","linkFileType":{"id":5,"text":"html"}},{"id":283928,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2003/0113/pdf/of03-113sheet1.pdf"},{"id":283929,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/of/2003/0113/pdf/of03-113sheet2.pdf"}],"scale":"20000","country":"United States","state":"Alaska","otherGeospatial":"Aleutian Islands;Kanaga Island;Kanaga Volcano","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -177.7546,51.4932 ], [ -177.7546,52.1616 ], [ -175.9436,52.1616 ], [ -175.9436,51.4932 ], [ -177.7546,51.4932 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac8e4b07f02db67c03a","contributors":{"authors":[{"text":"Miller, T. P.","contributorId":49345,"corporation":false,"usgs":true,"family":"Miller","given":"T.","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":248000,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Waythomas, C. F.","contributorId":10065,"corporation":false,"usgs":true,"family":"Waythomas","given":"C.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":247998,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Nye, C.J.","contributorId":42734,"corporation":false,"usgs":true,"family":"Nye","given":"C.J.","email":"","affiliations":[],"preferred":false,"id":247999,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":52916,"text":"wri034141 - 2003 - Multibeam bathymetry and selected perspective views of Glacier Bay, Alaska","interactions":[],"lastModifiedDate":"2012-02-02T00:11:45","indexId":"wri034141","displayToPublicDate":"2004-01-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2003-4141","title":"Multibeam bathymetry and selected perspective views of Glacier Bay, Alaska","language":"ENGLISH","doi":"10.3133/wri034141","usgsCitation":"Carlson, P.R., Hooge, P.N., Cochrane, G.R., Stevenson, A.J., Dartnell, P., and Stone, J.C., 2003, Multibeam bathymetry and selected perspective views of Glacier Bay, Alaska: U.S. Geological Survey Water-Resources Investigations Report 2003-4141, 1 map : col. ; 93 x 61 cm., on sheet 113 x 73 cm., folded in envelope 30 x 24 cm. + 1 data sheet (81 x 86 cm.). , https://doi.org/10.3133/wri034141.","productDescription":"1 map : col. ; 93 x 61 cm., on sheet 113 x 73 cm., folded in envelope 30 x 24 cm. + 1 data sheet (81 x 86 cm.). ","costCenters":[],"links":[{"id":174145,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":87041,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/2003/4141/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":87042,"rank":401,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/2003/4141/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b32e4b07f02db6b4869","contributors":{"authors":[{"text":"Carlson, Paul R.","contributorId":81469,"corporation":false,"usgs":true,"family":"Carlson","given":"Paul","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":246225,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hooge, Philip N.","contributorId":77587,"corporation":false,"usgs":true,"family":"Hooge","given":"Philip","email":"","middleInitial":"N.","affiliations":[],"preferred":false,"id":246224,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Cochrane, Guy R. 0000-0002-8094-4583 gcochrane@usgs.gov","orcid":"https://orcid.org/0000-0002-8094-4583","contributorId":2870,"corporation":false,"usgs":true,"family":"Cochrane","given":"Guy","email":"gcochrane@usgs.gov","middleInitial":"R.","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true},{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true}],"preferred":true,"id":246221,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Stevenson, Andrew J.","contributorId":18830,"corporation":false,"usgs":true,"family":"Stevenson","given":"Andrew","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":246222,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Dartnell, Peter 0000-0002-9554-729X pdartnell@usgs.gov","orcid":"https://orcid.org/0000-0002-9554-729X","contributorId":2688,"corporation":false,"usgs":true,"family":"Dartnell","given":"Peter","email":"pdartnell@usgs.gov","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":246220,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Stone, J. Christopher","contributorId":27125,"corporation":false,"usgs":true,"family":"Stone","given":"J.","email":"","middleInitial":"Christopher","affiliations":[],"preferred":false,"id":246223,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":70187861,"text":"70187861 - 2003 - A genetic study to aid in restoration of murres, guillemots and murrelets to the Gulf of Alaska","interactions":[],"lastModifiedDate":"2017-06-11T16:04:27","indexId":"70187861","displayToPublicDate":"2003-12-31T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":9,"text":"Other Report"},"title":"A genetic study to aid in restoration of murres, guillemots and murrelets to the Gulf of Alaska","docAbstract":"Genetic data are needed to aid in restoring several species of seabirds to the Gulf of Alaska. We analyzed sequence variation in mitochondrial DNA, microsatellite DNA and nuclear introns in samples of commom murres (Uria aalge), pigeon guillemots (Cepphus columba) and marbled murrelets (Brachyramphus marmoratus) from throughout the North Pacific. Data were analyzed using traditional approaches, nested clade analyses and assignment tests. No cryptic species were found, and there was no strong evidence for inbreeding, low genetic variation, or souce or sink regions in any them. Pacific common murres constitute a single genetic management unit (MU), but hybridization occurs between common and thick-billed murres (U. lomvia). In contrast, gene flow in pigeon guillemots is very restricted and population genetic structure is very strong; guillemots from the spill area are part of a MU that extends from the Alaska Peninsula to somewhere between Prince William Sound and Vancouver Island. Marbled murrelets in the spill area are part of a MU that extends from the Alaska Peninsula to at least British Columbia; tree- and ground-nesting murrelets are not genetically differentiated. Little if any hybridization occurs between marbled and Kittlitz's murrelets.
","language":"English","publisher":"Exxon Valdez Oil Spill Trustee Council","publisherLocation":"Anchorage, AK","usgsCitation":"Friesen, V.L., and Piatt, J.F., 2003, A genetic study to aid in restoration of murres, guillemots and murrelets to the Gulf of Alaska, 119 p.","productDescription":"119 p.","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":341564,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"},{"id":342361,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://www.evostc.state.ak.us/index.cfm?FA=searchresults.projectInfo&Project_ID=610"}],"country":"United States","state":"Alaska","otherGeospatial":"Gulf of Alaska","publicComments":"Final Report: Exxon Valdez Oil Spill Restoration Project 00169","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"59254a6fe4b0b7ff9fb361bb","contributors":{"authors":[{"text":"Friesen, Vicki L.","contributorId":59407,"corporation":false,"usgs":false,"family":"Friesen","given":"Vicki","email":"","middleInitial":"L.","affiliations":[{"id":7029,"text":"Queen's University, Kingston, Ontario, Canada","active":true,"usgs":false}],"preferred":false,"id":695805,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Piatt, John F. 0000-0002-4417-5748 jpiatt@usgs.gov","orcid":"https://orcid.org/0000-0002-4417-5748","contributorId":3025,"corporation":false,"usgs":true,"family":"Piatt","given":"John","email":"jpiatt@usgs.gov","middleInitial":"F.","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":695806,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70187855,"text":"70187855 - 2003 - Population status of Kittlitz's and Marbled Murrelets and surveys for other marine bird and mammal species in the Kenai Fjords area, Alaska","interactions":[],"lastModifiedDate":"2017-05-23T08:14:36","indexId":"70187855","displayToPublicDate":"2003-12-31T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":9,"text":"Other Report"},"title":"Population status of Kittlitz's and Marbled Murrelets and surveys for other marine bird and mammal species in the Kenai Fjords area, Alaska","docAbstract":"The Kittlitz's murrelet (Brachyramphus brevirostris) is a rare seabird that nests in alpine terrain and generally forages near tidewater glaciers during the breeding season. More than 95% of the global population breeds in Alaska, with the remainder occurring in the Russian Far East. A global population estimate using best-available data in the early 1990s was 20,000 individuals. However, survey data from two core areas (Prince William Sound and Glacier Bay) suggest that populations have declined by 80-90% during the past 10-20 years. In response to these declines, a coalition of environmental groups petitioned the USFWS in May of 2001 to list the Kittlitz’s murrelet under the Endangered Species Act. In 2002, we began a three-year project to examine population status and trend of Kittlitz’s Murrelets in areas where distribution and abundance are poorly known. Here we report on the first field season, focused on the south coast of the Kenai Peninsula. We re-surveyed selected historical transects to evaluate trends, and surveyed new transects for improved population estimation during early July 2002. From a total of 66 Kittlitz’s Murrelets seen on transects, we estimate a total population of 509 Kittlitz’s Murrelets along the south coast of the Kenai Peninsula. Comparisons with past surveys suggest a decline of 83% since 1976, with an average rate of decline calculated as–6.9 % per annum. This decline is in agreement with population declines observed elsewhere in the species’ core glaciated range, indicating that steep population declines observed to date are likely to be a range-wide phenomenon. While the focus of the study was Kittlitz’s Murrelets, other species of marine birds and mammals were also surveyed. Populations of the closely related Marbled Murrelet appear to have increased during the same time period. The abundance and distribution of other species are presented in appendices.
","language":"English","publisher":"US Fish and Wildlife Service","publisherLocation":"Anchorage, AK","usgsCitation":"van Pelt, T.I., and Piatt, J.F., 2003, Population status of Kittlitz's and Marbled Murrelets and surveys for other marine bird and mammal species in the Kenai Fjords area, Alaska, 65 p.","productDescription":"65 p.","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":341558,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Gulf of Alaska","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -153.3251953125,\n 58.92733441827545\n ],\n [\n -143.7890625,\n 58.92733441827545\n ],\n [\n -143.7890625,\n 62.79493487887006\n ],\n [\n -153.3251953125,\n 62.79493487887006\n ],\n [\n -153.3251953125,\n 58.92733441827545\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"59254a6fe4b0b7ff9fb361bf","contributors":{"authors":[{"text":"van Pelt, Thomas I.","contributorId":13392,"corporation":false,"usgs":true,"family":"van Pelt","given":"Thomas","email":"","middleInitial":"I.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":false,"id":695765,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Piatt, John F. 0000-0002-4417-5748 jpiatt@usgs.gov","orcid":"https://orcid.org/0000-0002-4417-5748","contributorId":3025,"corporation":false,"usgs":true,"family":"Piatt","given":"John","email":"jpiatt@usgs.gov","middleInitial":"F.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true},{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true},{"id":117,"text":"Alaska Science Center Biology WTEB","active":true,"usgs":true}],"preferred":true,"id":695766,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":70188358,"text":"70188358 - 2003 - Population genetic structure of Santa Ynez rainbow trout – 2001 based on microsatellite and mtDNA analyses ","interactions":[],"lastModifiedDate":"2017-06-07T10:10:00","indexId":"70188358","displayToPublicDate":"2003-12-31T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":9,"text":"Other Report"},"title":"Population genetic structure of Santa Ynez rainbow trout – 2001 based on microsatellite and mtDNA analyses ","docAbstract":"Microsatellite allelic and mitochondrial DNA (mtDNA) haplotype diversity are analyzed in eight rainbow trout (Oncorhynchus mykiss) collections: two from tributaries flowing into the upper Santa Ynez River watershed at Gibraltar Reservoir (Camuesa and Gidney creeks); three from tributaries between Gibraltar and Jameson reservoirs (Fox, Blue Canyon, and Alder creeks); one from a tributary above Jameson Reservoir (Juncal Creek); Jameson Reservoir; and one from the mainstem Santa Ynez River above the Jameson Reservoir. Both analyses reveal a high degree of population structure. Thirteen microsatellite loci are amplified from 376 fish. Population pairwise comparisons show significant differences in allelic frequency among all populations with the exception of Juncal Creek and Jameson Reservoir (p = 0.4). Pairwise Fst values range from 0.001 (Juncal Creek and Jameson Reservoir) to 0.17 (Camuesa and Juncal creeks) with an overall value of 0.021. Regression analyses (Slatkin 1993) supports an isolation-bydistance model in the five populations below Jameson Reservoir (intercept = 1.187, slope = -0.41, r2 = 0.67). A neighbor-joining bootstrap value of 100% (based on 2000 replicate trees) separates the populations sampled above and below Juncal Dam.
Composite haplotypes from 321 fish generated using mtDNA sequence data (Dloop) reveal four previously described haplotypes (MYS1, MYS3, MYS5 and MYS8; Nielsen et al. 1994a), and one (MYS5) was found in all populations. Mean haplotype diversity is 0.48. Pairwise Fst values from mtDNA range from -0.019 to 0.530 (0.177 over all populations) and are larger than those for microsatellites in 26 of 28 pairwise comparisons. In addition, the mtDNA and microsatellites provide contrasting evidence of the relationship of Fox and Alder creeks to the other six populations. Discrepancies between the two markers are likely due to the unique properties of the two marker types and their value in revealing historic (mtDNA) versus contemporary (microsatellites) genetic relationships. The contrasting results may indicate how relationships among the upper Santa Ynez River populations have changed since the installation of Juncal Dam.
Comparisons of mtDNA haplotype frequencies from fish collected for this study with samples analyzed previously in JLN’s laboratory (1993) reveal significant differences in mtDNA haplotypes for Fox and Alder creeks. In the 2001 samples from this study, there is a loss of three haplotypes despite larger sample sizes. AMOVA analysis of what we term “upper” (Alder, Fox, Blue Canyon, Camuesa, Gidney creeks and the upper Santa Ynez mainstem) and “lower” (Hilton, Salsipuedes and the lower mainstem Santa Ynez River) Santa Ynez River populations (1993-2001) reveal that 11% of the variance in haplotypes is found between the upper and lower drainage. A comparison of the mtDNA data from this study with those available for southern California coastal and California hatchery O. mykiss populations yields Fst values of 0.15 and 0.47, respectively. Differentiation of mtDNA haplotypes for population pairs of Santa Ynez River and hatchery fish show no significant differentiation between wild and at least one hatchery strain in Cachuma Reservoir, Hilton Creek, and the Lower Santa Ynez River.
","language":"English","publisher":"U.S. Fish and Wildlife Service","usgsCitation":"Nielsen, J.L., Zimmerman, C.E., Olsen, J.B., Wiacek, T., Kretschmer, E., Greenwald, G.M., and Wenburg, J.K., 2003, Population genetic structure of Santa Ynez rainbow trout – 2001 based on microsatellite and mtDNA analyses , 29 p.","productDescription":"29 p.","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":342199,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"California","otherGeospatial":"Santa Ynes River drainage","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -119.91233825683592,\n 34.482788036293435\n ],\n [\n -119.90615844726562,\n 34.48052400815731\n ],\n [\n -119.88555908203126,\n 34.47712785074854\n ],\n [\n 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-119.893798828125,\n 34.574994893575095\n ],\n [\n -119.90066528320314,\n 34.548418116253366\n ],\n [\n -119.90547180175781,\n 34.52579289427138\n ],\n [\n -119.90959167480469,\n 34.49863451269174\n ],\n [\n -119.91233825683592,\n 34.482788036293435\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"593910d9e4b0764e6c5e8af7","contributors":{"authors":[{"text":"Nielsen, Jennifer L.","contributorId":43722,"corporation":false,"usgs":true,"family":"Nielsen","given":"Jennifer","email":"","middleInitial":"L.","affiliations":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":697373,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Zimmerman, Christian E. 0000-0002-3646-0688 czimmerman@usgs.gov","orcid":"https://orcid.org/0000-0002-3646-0688","contributorId":410,"corporation":false,"usgs":true,"family":"Zimmerman","given":"Christian","email":"czimmerman@usgs.gov","middleInitial":"E.","affiliations":[{"id":116,"text":"Alaska Science Center Biology MFEB","active":true,"usgs":true},{"id":120,"text":"Alaska Science Center Water","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":697374,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Olsen, Jeffrey B.","contributorId":174632,"corporation":false,"usgs":false,"family":"Olsen","given":"Jeffrey","email":"","middleInitial":"B.","affiliations":[{"id":5128,"text":"U.S. Fish and Wildlife Service, University of Montana, Missoula, MT 59812","active":true,"usgs":false}],"preferred":false,"id":697375,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Wiacek, Talia","contributorId":174037,"corporation":false,"usgs":false,"family":"Wiacek","given":"Talia","email":"","affiliations":[],"preferred":false,"id":697376,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kretschmer, E.J.","contributorId":192687,"corporation":false,"usgs":false,"family":"Kretschmer","given":"E.J.","email":"","affiliations":[],"preferred":false,"id":697377,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Greenwald, Glenn M.","contributorId":192688,"corporation":false,"usgs":false,"family":"Greenwald","given":"Glenn","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":697378,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Wenburg, John K.","contributorId":174634,"corporation":false,"usgs":false,"family":"Wenburg","given":"John","email":"","middleInitial":"K.","affiliations":[{"id":5128,"text":"U.S. Fish and Wildlife Service, University of Montana, Missoula, MT 59812","active":true,"usgs":false}],"preferred":false,"id":697379,"contributorType":{"id":1,"text":"Authors"},"rank":7}]}} ,{"id":70187742,"text":"70187742 - 2003 - New mapping near Iron Creek, Talkeetna Mountains, indicates presence of Nikolai greenstone","interactions":[],"lastModifiedDate":"2017-05-24T15:48:53","indexId":"70187742","displayToPublicDate":"2003-12-31T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":2,"text":"State or Local Government Series"},"seriesTitle":{"id":5404,"text":"Alaska Division of Geological & Geophysical Surveys Professional Reports","active":false,"publicationSubtype":{"id":2}},"seriesNumber":"DGGS PR 120","chapter":"J","title":"New mapping near Iron Creek, Talkeetna Mountains, indicates presence of Nikolai greenstone","docAbstract":"Detailed geologic mapping in the Iron Creek area, Talkeetna Mountains B-5 Quadrangle, has documented several intrusive bodies and rock units not previously recognized and has extended the geologic history of the area through the Mesozoic and into the Tertiary era. Greenschist-facies metabasalt and metagabbro previously thought to be Paleozoic are intruded by Late Cretaceous to Paleocene dioritic to granitic plutons. The metabasalts are massive to amygdaloidal, commonly contain abundant magnetite, and large areas are patchily altered to epidote ± quartz. They host numerous copper oxide–copper sulfide–quartz–hematite veins and amygdule fillings. These lithologic features, recognized in the field, suggested a correlation of the metamafic rocks with the Late Triassic Nikolai Greenstone, which had not previously been mapped in the Iron Creek area. Thin, discontinuous metalimestones that overlie the metabasalt sequence had previously been assigned a Pennsylvanian(?) and Early Permian age on the basis of correlation with marbles to the north, which yielded Late Paleozoic or Permian macrofossils, or both. Three new samples from the metalimestones near Iron Creek yielded Late Triassic conodonts, which confirms the correlation of the underlying metamafic rocks with Nikolai Greenstone. These new data extend the occurrence of Nikolai Greenstone about 70 km southwest of its previously mapped extent.
Five to 10 km north of the conodont sample localities, numerous microgabbro and diabase sills intrude siliceous and locally calcareous metasedimentary rocks of uncertain age. These sills probably represent feeder zones to the Nikolai Greenstone. In the Mt. Hayes quadrangle 150 km to the northeast, large sill-form mafic and ultramafic feeders (for example, the Fish Lake complex) to the Nikolai Greenstone in the Amphitheatre Mountains host magmatic sulfide nickel–copper–platinum-group-element (PGE) mineralization. This new recognition of Nikolai Greenstone and possible magmatic feeders in the Iron Creek area suggests a much greater potential for large PGE, copper, or nickel deposits in the Talkeetna Mountains than previous mineral resource appraisals of the area have suggested, and requires reevaluation of large-scale tectonic models for the area.
","largerWorkType":{"id":18,"text":"Report"},"largerWorkTitle":"Short Notes on Alaska Geology 2003 (DGGS PR 120)","largerWorkSubtype":{"id":2,"text":"State or Local Government Series"},"language":"English","publisher":"Alaska Division of Geological & Geophysical Surveys","publisherLocation":"Fairbanks, AK","doi":"10.14509/2917","usgsCitation":"Schmidt, J.M., Werdon, M., and Wardlaw, B.R., 2003, New mapping near Iron Creek, Talkeetna Mountains, indicates presence of Nikolai greenstone: Alaska Division of Geological & Geophysical Surveys Professional Reports DGGS PR 120, 8 p., https://doi.org/10.14509/2917.","productDescription":"8 p.","startPage":"101","endPage":"108","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":341377,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Iron Creek, Talkeenta Mountains","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -150,\n 62\n ],\n [\n -147,\n 62\n ],\n [\n -147,\n 63\n ],\n [\n -150,\n 63\n ],\n [\n -150,\n 62\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"591c0fcee4b0a7fdb43ddf0a","contributors":{"authors":[{"text":"Schmidt, Jeanine M. jschmidt@usgs.gov","contributorId":3138,"corporation":false,"usgs":true,"family":"Schmidt","given":"Jeanine","email":"jschmidt@usgs.gov","middleInitial":"M.","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true}],"preferred":true,"id":695394,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Werdon, Melanie B.","contributorId":53345,"corporation":false,"usgs":true,"family":"Werdon","given":"Melanie B.","affiliations":[],"preferred":false,"id":695395,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wardlaw, Bruce R. bwardlaw@usgs.gov","contributorId":266,"corporation":false,"usgs":true,"family":"Wardlaw","given":"Bruce","email":"bwardlaw@usgs.gov","middleInitial":"R.","affiliations":[{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"preferred":true,"id":695396,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":70263734,"text":"70263734 - 2003 - Studies of Alaskan volcanoes using synthetic aperature radar and Landsat imagery","interactions":[],"lastModifiedDate":"2025-02-20T17:09:03.925353","indexId":"70263734","displayToPublicDate":"2003-12-01T11:05:37","publicationYear":"2003","noYear":false,"publicationType":{"id":24,"text":"Conference Paper"},"publicationSubtype":{"id":19,"text":"Conference Paper"},"title":"Studies of Alaskan volcanoes using synthetic aperature radar and Landsat imagery","docAbstract":"Approximately 10 percent of the world’s active volcanoes are located in the Alaskan Aleutian arc and produce about 3-4 explosive eruptions per year. Even with this high amount of volcanic activity, the remote locations and harsh environments of the Aleutian volcanoes conspire to keep them among some of the most poorly studied volcanoes in the world. Space-borne remote sensed imagery can play a significant role in improving our understanding of activity at these volcanoes. Synthetic aperture radar (SAR), Landsat imagery, and Digital Elevation Models (DEMs) derived from SRTM and the National Elevation Database (NED) are used to study several Alaskan volcanoes. Interferometric SAR (InSAR) techniques with ERS-1 and ERS-2 SAR imagery are used to measure ground-surface deformation, which enables the construction of detailed mechanical models that enhance the study of magmatic and tectonic processes. The 30-year historical archive of Landsat data is used to study land cover change, visualize the ash plumes of Aleutian volcanic eruptions, and to map the extent of lava flows. Differencing two DEMs that represent volcano topography before and after an eruption makes it possible to calculate the volume of extruded materials. This paper provides a progress report on how InSAR, Landsat imagery and digital elevation data can be used to better understand the volcanic processes at three Aleutian volcanoes.
","largerWorkType":{"id":4,"text":"Book"},"largerWorkTitle":"Technology- Converging at the top of the world","largerWorkSubtype":{"id":12,"text":"Conference publication"},"publisher":"American Society for Photogrammetry and Remote Sensing","usgsCitation":"Rykhus, R.P., and Lu, Z., 2003, Studies of Alaskan volcanoes using synthetic aperature radar and Landsat imagery, in Technology- Converging at the top of the world, 6 p.","productDescription":"6 p.","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":482286,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"country":"United States","state":"Alaska","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -152.33036874483844,\n 59.70347743188694\n ],\n [\n -169.1695521105382,\n 59.70347743188694\n ],\n [\n -169.1695521105382,\n 52.600812738063496\n ],\n [\n -152.33036874483844,\n 52.600812738063496\n ],\n [\n -152.33036874483844,\n 59.70347743188694\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","contributors":{"authors":[{"text":"Rykhus, Russell P.","contributorId":27337,"corporation":false,"usgs":true,"family":"Rykhus","given":"Russell","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":928003,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Lu, Zhong 0000-0001-9181-1818 lu@usgs.gov","orcid":"https://orcid.org/0000-0001-9181-1818","contributorId":901,"corporation":false,"usgs":true,"family":"Lu","given":"Zhong","email":"lu@usgs.gov","affiliations":[],"preferred":true,"id":928004,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":53210,"text":"ofr03446 - 2003 - Alaska resource data file: Nabesna quadrangle","interactions":[],"lastModifiedDate":"2025-07-29T12:03:17.911095","indexId":"ofr03446","displayToPublicDate":"2003-12-01T07:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2003-446","title":"Alaska resource data file: Nabesna quadrangle","docAbstract":"Descriptions of the mineral occurrences shown on the accompanying figure follow. See U.S. Geological Survey (1996) for a description of the information content of each field in the records. 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See U.S. Geological Survey (1996) for a description of the information content of each field in the records. The data presented here are maintained as part of a statewide database on mines, prospects and mineral occurrences throughout Alaska.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr03447","usgsCitation":"Britton, J.M., 2003, Alaska resource data file: Wiseman quadrangle: U.S. Geological Survey Open-File Report 2003-447, 331 p., https://doi.org/10.3133/ofr03447.","productDescription":"331 p.","numberOfPages":"332","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":484204,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_61996.htm","linkFileType":{"id":5,"text":"html"}},{"id":177213,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr03447.jpg"},{"id":4836,"rank":3,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2003/0447/","linkFileType":{"id":5,"text":"html"}},{"id":484205,"rank":5,"type":{"id":18,"text":"Project Site"},"url":"https://doi.org/10.5066/P96MMRFD"},{"id":283948,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2003/0447/pdf/of03-447.pdf","text":"Report","size":"1.22 MB","linkFileType":{"id":1,"text":"pdf"},"description":"OFR 03-447 PDF"}],"country":"United States","state":"Alaska","otherGeospatial":"Wiseman quadrangle","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -153.0,67.0 ], [ -153.0,68.0 ], [ -150.0,68.0 ], [ -150.0,67.0 ], [ -153.0,67.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae2e4b07f02db688e0b","contributors":{"authors":[{"text":"Britton, Joe M.","contributorId":87807,"corporation":false,"usgs":true,"family":"Britton","given":"Joe","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":246927,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":53215,"text":"ofr03421 - 2003 - 40Ar/39Ar geochronology of igneous rocks in the Taylor Mountains and Dillingham quadrangles in SW Alaska","interactions":[],"lastModifiedDate":"2025-08-18T22:01:30.99592","indexId":"ofr03421","displayToPublicDate":"2003-12-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2003-421","displayTitle":"40Ar/39Ar geochronology of igneous rocks in the Taylor Mountains and Dillingham quadrangles in SW Alaska","title":"40Ar/39Ar geochronology of igneous rocks in the Taylor Mountains and Dillingham quadrangles in SW Alaska","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr03421","usgsCitation":"Iriondo, A., Kunk, M.J., and Wilson, F.H., 2003, 40Ar/39Ar geochronology of igneous rocks in the Taylor Mountains and Dillingham quadrangles in SW Alaska: U.S. Geological Survey Open-File Report 2003-421, 32 p., https://doi.org/10.3133/ofr03421.","productDescription":"32 p.","costCenters":[{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"links":[{"id":494270,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_61859.htm","linkFileType":{"id":5,"text":"html"}},{"id":4842,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2003/ofr-03-421/","linkFileType":{"id":5,"text":"html"}},{"id":179524,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Taylor Mountains and Dillingham quadrangles","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -159,\n 61\n ],\n [\n -159,\n 59\n ],\n [\n -156,\n 59\n ],\n [\n -156,\n 61\n ],\n [\n -159,\n 61\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd4932e4b0b290850eef80","contributors":{"authors":[{"text":"Iriondo, Alexander","contributorId":23619,"corporation":false,"usgs":true,"family":"Iriondo","given":"Alexander","affiliations":[],"preferred":false,"id":246945,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Kunk, Michael J. 0000-0003-4424-7825 mkunk@usgs.gov","orcid":"https://orcid.org/0000-0003-4424-7825","contributorId":200968,"corporation":false,"usgs":true,"family":"Kunk","given":"Michael","email":"mkunk@usgs.gov","middleInitial":"J.","affiliations":[{"id":40020,"text":"Florence Bascom Geoscience Center","active":true,"usgs":true},{"id":243,"text":"Eastern Geology and Paleoclimate Science Center","active":true,"usgs":true}],"preferred":true,"id":246946,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wilson, Frederic H. 0000-0003-1761-6437 fwilson@usgs.gov","orcid":"https://orcid.org/0000-0003-1761-6437","contributorId":67174,"corporation":false,"usgs":true,"family":"Wilson","given":"Frederic","email":"fwilson@usgs.gov","middleInitial":"H.","affiliations":[{"id":119,"text":"Alaska Science Center Geology Minerals","active":true,"usgs":true},{"id":114,"text":"Alaska Science Center","active":true,"usgs":true}],"preferred":true,"id":246944,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":53143,"text":"fs10703 - 2003 - The natural dispersal of metals to the environment in the Wulik River-Ikalukrok Creek area, western Brooks Range, Alaska","interactions":[],"lastModifiedDate":"2024-06-13T20:03:41.388945","indexId":"fs10703","displayToPublicDate":"2003-12-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":313,"text":"Fact Sheet","code":"FS","onlineIssn":"2327-6932","printIssn":"2327-6916","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"107-03","title":"The natural dispersal of metals to the environment in the Wulik River-Ikalukrok Creek area, western Brooks Range, Alaska","docAbstract":"No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/fs10703","usgsCitation":"Kelley, K., and Hudson, T., 2003, The natural dispersal of metals to the environment in the Wulik River-Ikalukrok Creek area, western Brooks Range, Alaska (Version 1.0): U.S. Geological Survey Fact Sheet 107-03, 4 p., https://doi.org/10.3133/fs10703.","productDescription":"4 p.","costCenters":[],"links":[{"id":430155,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_63490.htm","linkFileType":{"id":5,"text":"html"}},{"id":4728,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/fs/fs-107-03/","linkFileType":{"id":5,"text":"html"}},{"id":120592,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/fs_107_03.jpg"}],"country":"United States","state":"Alaska","otherGeospatial":"Wulik River-Ikalukrok Creek area","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -164.1667,\n 67.6\n ],\n [\n -164.1667,\n 67.2\n ],\n [\n -162.7333,\n 67.2\n ],\n [\n -162.7333,\n 67.6\n ],\n [\n -164.1667,\n 67.6\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a80e4b07f02db64999c","contributors":{"authors":[{"text":"Kelley, K.D. 0000-0002-3232-5809","orcid":"https://orcid.org/0000-0002-3232-5809","contributorId":75157,"corporation":false,"usgs":true,"family":"Kelley","given":"K.D.","affiliations":[],"preferred":false,"id":246747,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Hudson, Travis","contributorId":90282,"corporation":false,"usgs":true,"family":"Hudson","given":"Travis","affiliations":[],"preferred":false,"id":246748,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":53219,"text":"ofr03403 - 2003 - Station corrections for the Katmai Region Seismic Network","interactions":[],"lastModifiedDate":"2014-04-07T14:37:26","indexId":"ofr03403","displayToPublicDate":"2003-11-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2003-403","title":"Station corrections for the Katmai Region Seismic Network","docAbstract":"Most procedures for routinely locating earthquake hypocenters within a local network are constrained to using laterally homogeneous velocity models to represent the Earth's crustal velocity structure. As a result, earthquake location errors may arise due to actual lateral variations in the Earth's velocity structure. Station corrections can be used to compensate for heterogeneous velocity structure near individual stations (Douglas, 1967; Pujol, 1988). The HYPOELLIPSE program (Lahr, 1999) used by the Alaska Volcano Observatory (AVO) to locate earthquakes in Cook Inlet and the Aleutian Islands is a robust and efficient program that uses one-dimensional velocity models to determine hypocenters of local and regional earthquakes. This program does have the capability of utilizing station corrections within it's earthquake location proceedure. The velocity structures of Cook Inlet and Aleutian volcanoes very likely contain laterally varying heterogeneities. For this reason, the accuracy of earthquake locations in these areas will benefit from the determination and addition of station corrections. In this study, I determine corrections for each station in the Katmai region. The Katmai region is defined to lie between latitudes 57.5 degrees North and 59.00 degrees north and longitudes -154.00 and -156.00 (see Figure 1) and includes Mount Katmai, Novarupta, Mount Martin, Mount Mageik, Snowy Mountain, Mount Trident, and Mount Griggs volcanoes. Station corrections were determined using the computer program VELEST (Kissling, 1994). VELEST inverts arrival time data for one-dimensional velocity models and station corrections using a joint hypocenter determination technique. VELEST can also be used to locate single events.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr03403","usgsCitation":"Searcy, C.K., 2003, Station corrections for the Katmai Region Seismic Network: U.S. Geological Survey Open-File Report 2003-403, 14 p., https://doi.org/10.3133/ofr03403.","productDescription":"14 p.","numberOfPages":"16","costCenters":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"links":[{"id":179613,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr03403.jpg"},{"id":4846,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2003/0403/","linkFileType":{"id":5,"text":"html"}},{"id":285857,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2003/0403/pdf/of03-403.pdf"}],"country":"United States","state":"Alaska","otherGeospatial":"Katami Region","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -156.0,57.5 ], [ -156.0,59.0 ], [ -154.0,59.0 ], [ -154.0,57.5 ], [ -156.0,57.5 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49e0e4b07f02db5e3dc9","contributors":{"authors":[{"text":"Searcy, Cheryl K.","contributorId":107013,"corporation":false,"usgs":true,"family":"Searcy","given":"Cheryl","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":246964,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":69712,"text":"mf2424 - 2003 - Map of glacial limits and possible refugia in the southern Alexander Archipelago, Alaska, during the late Wisconsin glaciation","interactions":[],"lastModifiedDate":"2012-02-10T00:11:33","indexId":"mf2424","displayToPublicDate":"2003-11-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":325,"text":"Miscellaneous Field Studies Map","code":"MF","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2424","title":"Map of glacial limits and possible refugia in the southern Alexander Archipelago, Alaska, during the late Wisconsin glaciation","docAbstract":" During the late Wisconsin glaciation (circa 26,000-13,000 carbon-14 yr BP) the Cordilleran glacier complex formed vast ice fields and large glaciers along the crest of the Coast Mountains. As these glaciers flowed west to the Pacific Ocean, they were joined by local glaciers originating on the higher reaches of the Alexander Archipelago (Mann and Hamiltion, 1995). This extensive volume of ice was channeled into deep troughs (present-day fiords) that formed major outlet glaciers, such as the glaciers that occupied Chatham Strait and Dixon Entrance. In several places along the coast, deep glacially scoured submarine troughs indicate that glaciers reached to the edge of the continental shelf. For instance, the glacier that extended into the Dixon Entrance trough is known to have extended to the edge of the continental shelf. Its retreat began sometime after 16,000-15,000 carbon-14 yr BP (Barrie and Conway, 1999).","language":"ENGLISH","doi":"10.3133/mf2424","usgsCitation":"Carrara, P.E., Ager, T.A., Baichtal, J.F., and VanSistine, D., 2003, Map of glacial limits and possible refugia in the southern Alexander Archipelago, Alaska, during the late Wisconsin glaciation (Version 1.0): U.S. Geological Survey Miscellaneous Field Studies Map 2424, 53 by 33 inches in color., https://doi.org/10.3133/mf2424.","productDescription":"53 by 33 inches in color.","costCenters":[],"links":[{"id":110453,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_59515.htm","linkFileType":{"id":5,"text":"html"},"description":"59515"},{"id":191479,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":6383,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/mf/2003/mf-2424/","linkFileType":{"id":5,"text":"html"}}],"scale":"500000","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -136,54.25 ], [ -136,57.166666666666664 ], [ -131,57.166666666666664 ], [ -131,54.25 ], [ -136,54.25 ] ] ] } } ] }","edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a92e4b07f02db6572af","contributors":{"authors":[{"text":"Carrara, Paul E. pcarrara@usgs.gov","contributorId":1342,"corporation":false,"usgs":true,"family":"Carrara","given":"Paul","email":"pcarrara@usgs.gov","middleInitial":"E.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":280968,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ager, Thomas A. 0000-0002-5029-7581 tager@usgs.gov","orcid":"https://orcid.org/0000-0002-5029-7581","contributorId":736,"corporation":false,"usgs":true,"family":"Ager","given":"Thomas","email":"tager@usgs.gov","middleInitial":"A.","affiliations":[{"id":318,"text":"Geosciences and Environmental Change Science Center","active":true,"usgs":true}],"preferred":true,"id":280967,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Baichtal, James F.","contributorId":47875,"corporation":false,"usgs":true,"family":"Baichtal","given":"James","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":280969,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"VanSistine, D. Paco 0000-0003-1166-2547","orcid":"https://orcid.org/0000-0003-1166-2547","contributorId":61906,"corporation":false,"usgs":true,"family":"VanSistine","given":"D. Paco","affiliations":[],"preferred":false,"id":280970,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":70157058,"text":"70157058 - 2003 - Deformation of the 2002 Denali Fault earthquakes, mapped by Radarsat-1 interferometry","interactions":[],"lastModifiedDate":"2015-09-03T11:47:55","indexId":"70157058","displayToPublicDate":"2003-10-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":2,"text":"Article"},"publicationSubtype":{"id":10,"text":"Journal Article"},"seriesTitle":{"id":1578,"text":"Eos, Transactions, American Geophysical Union","onlineIssn":"2324-9250","printIssn":"0096-394","active":true,"publicationSubtype":{"id":10}},"title":"Deformation of the 2002 Denali Fault earthquakes, mapped by Radarsat-1 interferometry","docAbstract":"The magnitude 7.9 earthquake that struck central Alaska on 3 November 2002 was the largest strike-slip earthquake in North America for more than 150 years. The earthquake ruptured about 340 km of the Denali Fault system with observed right-lateral offsets of up to 9 m [Eberhart-Phillips et al., 2003] (Figure l). The rupture initiated with slip on a previously unknown thrust fault, the 40-km-long Susitna Glacier Fault. The rupture propagated eastward for about 220 km along the right-lateral Denali Fault where right-lateral slip averaged ˜5 m, before stepping southeastward onto the Totschunda Fault for about 70 km, with offsets as large as 2 m. The 3 November earthquake was preceded by a magnitude 6.7 shock on 23 October—the Nenana Mountain Earthquake—which was located about 25 km to the west of the 3 November earthquake.
","language":"English","publisher":"AGU Publications","doi":"10.1029/2003EO410002","usgsCitation":"Lu, Z., Wright, T., and Wicks, C.W., 2003, Deformation of the 2002 Denali Fault earthquakes, mapped by Radarsat-1 interferometry: Eos, Transactions, American Geophysical Union, v. 84, no. 41, p. 425-431, https://doi.org/10.1029/2003EO410002.","productDescription":"7 p.","startPage":"425","endPage":"431","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":222,"text":"Earth Resources Observation and Science (EROS) Center","active":true,"usgs":true}],"links":[{"id":307913,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/outside_thumb.jpg"}],"volume":"84","issue":"41","noUsgsAuthors":false,"publicationDate":"2011-06-03","publicationStatus":"PW","scienceBaseUri":"55e96f33e4b0dacf699e7873","contributors":{"authors":[{"text":"Lu, Zhong 0000-0001-9181-1818 lu@usgs.gov","orcid":"https://orcid.org/0000-0001-9181-1818","contributorId":901,"corporation":false,"usgs":true,"family":"Lu","given":"Zhong","email":"lu@usgs.gov","affiliations":[],"preferred":true,"id":571377,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wright, Tim","contributorId":35942,"corporation":false,"usgs":true,"family":"Wright","given":"Tim","affiliations":[],"preferred":false,"id":571378,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wicks, Charles W. Jr. 0000-0002-0809-1328 cwicks@usgs.gov","orcid":"https://orcid.org/0000-0002-0809-1328","contributorId":127701,"corporation":false,"usgs":true,"family":"Wicks","given":"Charles","suffix":"Jr.","email":"cwicks@usgs.gov","middleInitial":"W.","affiliations":[{"id":237,"text":"Earthquake Science Center","active":true,"usgs":true}],"preferred":true,"id":571379,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":69662,"text":"i2788 - 2003 - Geologic map of the Big Delta B-2 quadrangle, east-central Alaska","interactions":[],"lastModifiedDate":"2018-10-22T11:31:43","indexId":"i2788","displayToPublicDate":"2003-10-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":320,"text":"IMAP","code":"I","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2788","title":"Geologic map of the Big Delta B-2 quadrangle, east-central Alaska","docAbstract":" New 1:63,360-scale geologic mapping of the Big Delta B-2 quadrangle provides important data on the structural setting and age of geologic units, as well as on the timing of gold mineralization plutonism within the Yukon-Tanana Upland of east-central Alaska. Gold exploration has remained active throughout the region in response to the discovery of the Pogo gold deposit, which lies within the northwestern part of the quadrangle near the south bank of the Goodpaster River. Geologic mapping and associated geochronological and geochemical studies by the U.S. Geological Survey (USGS) and the Alaska Department of Natural Resources, Division of Mining and Water Management, provide baseline data to help understand the regional geologic framework. Teck Cominco Limited geologists have provided the geologic mapping for the area that overlies the Pogo gold deposit as well as logistical support, which has lead to a much improved and informative product.\r\n The Yukon-Tanana Upland lies within the Tintina province in Alaska and consists of Paleozoic and possibly older(?) supracrustal rocks intruded by Paleozoic (Devonian to Mississippian) and Cretaceous plutons. The oldest rocks in the Big Delta B-2 quadrangle are Paleozoic gneisses of both plutonic and sedimentary origin. Paleozoic deformation, potentially associated with plutonism, was obscured by intense Mesozoic deformation and metamorphism. At least some of the rocks in the quadrangle underwent tectonism during the Middle Jurassic (about 188 Ma), and were subsequently deformed in an Early Cretaceous contractional event between about 130 and 116 Ma. New U-Pb SHRIMP data presented here on zircons from the Paleozoic biotite gneisses record inherited cores that range from 363 Ma to about 2,130 Ma and have rims of euhedral Early Cretaceous metamorphic overgrowths (116 +/- 4 Ma), interpreted to record recrystallization during Cretaceous west-northwest-directed thrusting and folding. U-Pb SHRIMP dating of monazite from a Paleozoic gneiss sample yields an age of 112 +/- 2 Ma; the monazite presumably grew during the waning stages of the intense regional Cretaceous ductile deformation. The Cretaceous ductile deformation was followed closely by granite plutonism and gold mineralization. The main pulse of gold mineralization is temporally and spatially associated with the Cretaceous granitic dikes and plutons and occurred during regional uplift and extension.","language":"ENGLISH","doi":"10.3133/i2788","isbn":"0607900695","usgsCitation":"Day, W.C., Aleinikoff, J.N., Roberts, P., Smith, M., Gamble, B.M., Henning, M.W., Gough, L.P., and Morath, L.C., 2003, Geologic map of the Big Delta B-2 quadrangle, east-central Alaska: U.S. Geological Survey IMAP 2788, 1 map : col. ; 44 x 39 cm., on sheet 84 x 99 cm., folded in envelope 30 x 24 cm., https://doi.org/10.3133/i2788.","productDescription":"1 map : col. ; 44 x 39 cm., on sheet 84 x 99 cm., folded in envelope 30 x 24 cm.","costCenters":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"links":[{"id":187456,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":110404,"rank":700,"type":{"id":15,"text":"Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_54573.htm","linkFileType":{"id":5,"text":"html"},"description":"54573"},{"id":6334,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/imap/2003/i-2788/","linkFileType":{"id":5,"text":"html"}}],"scale":"63360","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -145,64.25 ], [ -145,64.5 ], [ -144.5,64.5 ], [ -144.5,64.25 ], [ -145,64.25 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b0be4b07f02db69d972","contributors":{"authors":[{"text":"Day, Warren C. 0000-0002-9278-2120 wday@usgs.gov","orcid":"https://orcid.org/0000-0002-9278-2120","contributorId":1308,"corporation":false,"usgs":true,"family":"Day","given":"Warren","email":"wday@usgs.gov","middleInitial":"C.","affiliations":[{"id":387,"text":"Mineral Resources Program","active":true,"usgs":true}],"preferred":true,"id":280829,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Aleinikoff, John N. 0000-0003-3494-6841 jaleinikoff@usgs.gov","orcid":"https://orcid.org/0000-0003-3494-6841","contributorId":1478,"corporation":false,"usgs":true,"family":"Aleinikoff","given":"John","email":"jaleinikoff@usgs.gov","middleInitial":"N.","affiliations":[{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":280830,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Roberts, Paul","contributorId":54300,"corporation":false,"usgs":true,"family":"Roberts","given":"Paul","email":"","affiliations":[],"preferred":false,"id":280833,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Smith, Moira","contributorId":17313,"corporation":false,"usgs":true,"family":"Smith","given":"Moira","affiliations":[],"preferred":false,"id":280831,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Gamble, Bruce M. bgamble@usgs.gov","contributorId":560,"corporation":false,"usgs":true,"family":"Gamble","given":"Bruce","email":"bgamble@usgs.gov","middleInitial":"M.","affiliations":[],"preferred":true,"id":280827,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Henning, Mitchell W.","contributorId":48641,"corporation":false,"usgs":true,"family":"Henning","given":"Mitchell","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":280832,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Gough, Larry P. lgough@usgs.gov","contributorId":1230,"corporation":false,"usgs":true,"family":"Gough","given":"Larry","email":"lgough@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":280828,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Morath, Laurie C.","contributorId":99225,"corporation":false,"usgs":true,"family":"Morath","given":"Laurie","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":280834,"contributorType":{"id":1,"text":"Authors"},"rank":8}]}} ,{"id":53081,"text":"ofr03330 - 2003 - North Alaska petroleum system analysis: The regional map compilation","interactions":[],"lastModifiedDate":"2022-01-07T21:13:49.976535","indexId":"ofr03330","displayToPublicDate":"2003-10-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2003-330","title":"North Alaska petroleum system analysis: The regional map compilation","docAbstract":"The U.S. Geological Survey initiated an effort to model north Alaskan petroleum systems. The geographic and geologic basis for modeling systems is provided by a set of regional digital maps that allow evaluation of the widest possible extent of each system. Accordingly, we laid out a rectangular map grid 1300 km (800 miles) east-west and 600 km (375 miles) north-south. The resulting map area extends from the Yukon Territory of Canada on the east to the Russian-U.S. Chukchi Sea on the west and from the Brooks Range on the south to the Canada basin-Chukchi borderland on the north. Within this map region, we combined disparate types of publicly available data to produce structure contour maps. Data types range from seismic-based mapping as in the National Petroleum Reserve to well penetrations in areas of little or no seismic data where extrapolation was required. With these types of data, we produced structure contour maps on three horizons: top of pre-Mississippian (basement), top of Triassic (Ellesmerian sequence), and top of Neocomian (Beaufortian sequence). These horizons, when combined with present-day topography and bathymetry, provide the bounding structural/stratigraphic surfaces of the north Alaskan petroleum province that mark major defining moments of the region's geologic history and allow regional portrayal of preserved sediment accumulations.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr03330","usgsCitation":"Saltus, R.W., and Bird, K.J., 2003, North Alaska petroleum system analysis: The regional map compilation: U.S. Geological Survey Open-File Report 2003-330, 1 Plate: 93.75 x 37.50 inches, https://doi.org/10.3133/ofr03330.","productDescription":"1 Plate: 93.75 x 37.50 inches","costCenters":[{"id":255,"text":"Energy Resources Program","active":true,"usgs":true}],"links":[{"id":182126,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr03330.jpg"},{"id":5257,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2003/0330/","linkFileType":{"id":5,"text":"html"}},{"id":110447,"rank":700,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2003/0330/pdf/of03-330.pdf","linkFileType":{"id":1,"text":"pdf"},"description":"59087"},{"id":394064,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_59087.htm"}],"country":"Canada, United States","state":"Alaska, Yukon","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -172,\n 68\n ],\n [\n -135,\n 68\n ],\n [\n -135,\n 73\n ],\n [\n -172,\n 73\n ],\n [\n -172,\n 68\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4afde4b07f02db696dce","contributors":{"authors":[{"text":"Saltus, Richard W. saltus@usgs.gov","contributorId":777,"corporation":false,"usgs":true,"family":"Saltus","given":"Richard","email":"saltus@usgs.gov","middleInitial":"W.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true}],"preferred":true,"id":246582,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bird, Kenneth J. kbird@usgs.gov","contributorId":1015,"corporation":false,"usgs":true,"family":"Bird","given":"Kenneth","email":"kbird@usgs.gov","middleInitial":"J.","affiliations":[{"id":255,"text":"Energy Resources Program","active":true,"usgs":true}],"preferred":true,"id":246583,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":53095,"text":"ofr03411 - 2003 - Preliminary hydrodynamic analysis of landslide-generated waves in Tidal Inlet, Glacier Bay National Park, Alaska","interactions":[],"lastModifiedDate":"2014-04-07T14:45:47","indexId":"ofr03411","displayToPublicDate":"2003-10-01T00:00:00","publicationYear":"2003","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"2003-411","title":"Preliminary hydrodynamic analysis of landslide-generated waves in Tidal Inlet, Glacier Bay National Park, Alaska","docAbstract":"A landslide block perched on the northern wall of Tidal Inlet, Glacier Bay National Park (Figure 1), has the potential to generate large waves in Tidal Inlet and the western arm of Glacier Bay if it were to fail catastrophically. Landslide-generated waves are a particular concern for cruise ships transiting through Glacier Bay on a daily basis during the summer months. The objective of this study is to estimate the range of wave amplitudes and periods in the western arm of Glacier Bay from a catastrophic landslide in Tidal Inlet. This study draws upon preliminary findings of a field survey by Wieczorek et al. (2003), and evaluates the effects of variations in landslide source parameters on the wave characteristics.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr03411","usgsCitation":"Geist, E.L., Jakob, M., Wieczoreck, G.F., and Dartnell, P., 2003, Preliminary hydrodynamic analysis of landslide-generated waves in Tidal Inlet, Glacier Bay National Park, Alaska: U.S. Geological Survey Open-File Report 2003-411, 20 p., https://doi.org/10.3133/ofr03411.","productDescription":"20 p.","numberOfPages":"19","costCenters":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"links":[{"id":5290,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2003/0411/","linkFileType":{"id":5,"text":"html"}},{"id":180987,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/ofr03411.jpg"},{"id":285868,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2003/0411/pdf/of03-411.pdf"}],"country":"United States","state":"Alaska","otherGeospatial":"Glacier Bay National Park;Tidal Inlet","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -138.0,58.0 ], [ -138.0,59.0 ], [ -134.0,59.0 ], [ -134.0,58.0 ], [ -138.0,58.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4abce4b07f02db67342d","contributors":{"authors":[{"text":"Geist, Eric L. 0000-0003-0611-1150 egeist@usgs.gov","orcid":"https://orcid.org/0000-0003-0611-1150","contributorId":1956,"corporation":false,"usgs":true,"family":"Geist","given":"Eric","email":"egeist@usgs.gov","middleInitial":"L.","affiliations":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":246628,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jakob, Matthias","contributorId":82179,"corporation":false,"usgs":true,"family":"Jakob","given":"Matthias","email":"","affiliations":[],"preferred":false,"id":246631,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Wieczoreck, Gerald F.","contributorId":7181,"corporation":false,"usgs":true,"family":"Wieczoreck","given":"Gerald","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":246630,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Dartnell, Peter 0000-0002-9554-729X pdartnell@usgs.gov","orcid":"https://orcid.org/0000-0002-9554-729X","contributorId":2688,"corporation":false,"usgs":true,"family":"Dartnell","given":"Peter","email":"pdartnell@usgs.gov","affiliations":[{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":246629,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ]}