A note on the effect of wind waves on vertical mixing in Franks Tract, Sacramento-San Joaquin Delta, California, USA
Janet K. Thompson, Nicole L. Jones, Stephen G. Monismith
2008, San Francisco Estuary and Watershed Science (6) 1-11
A one-dimensional numerical model that simulates the effects of whitecapping waves was used to investigate the importance of whitecapping waves to vertical mixing at a 3-meter-deep site in Franks Tract in the Sacramento-San Joaquin Delta over an 11-day period. Locally-generated waves of mean period approximately 2 s were generated under...
Seeding hydrate formation in water-saturated sand with dissolved-phase methane obtained from hydrate dissolution: A progress report
William F. Waite, J.P. Osegovic, William J. Winters, M.D. Max, David H. Mason
2008, Conference Paper, Proceedings of the 6th International Conference on Gas Hydrates (ICGH 2008)
An isobaric flow loop added to the Gas Hydrate And Sediment Test Laboratory Instrument (GHASTLI) is being investigated as a means of rapidly forming methane hydrate in watersaturated sand from methane dissolved in water. Water circulates through a relatively warm source chamber, dissolving granular methane hydrate that was pre-made from...
Federal/State mapping program supports ocean management and research
B.D. Andrews, Seth D. Ackerman
2008, Federal GIS Connection 1-4
No abstract available....
Physical property changes in hydrate-bearing sediment due to depressurization and subsequent repressurization
W.F. Waite, T.J. Kneafsey, W.J. Winters, D.H. Mason
2008, Journal of Geophysical Research B: Solid Earth (113)
Physical property measurements of sediment cores containing natural gas hydrate are typically performed on material exposed, at least briefly, to non-in situ conditions during recovery. To examine the effects of a brief excursion from the gas-hydrate stability field, as can occur when pressure cores are transferred to pressurized storage vessels,...
Holocene climate and climate variability of the northern Gulf of Mexico and adjacent northern Gulf Coast: A review
Richard Z. Poore
2008, The Open Paleontology Journal (1) 7-17
Marine records from the northern Gulf of Mexico indicate that significant multidecadal- and century-scale variability was common during the Holocene. Mean annual sea-surface temperature (SST) during the last 1,400 years may have varied by 3°C, and excursions to cold SST coincide with reductions in solar output. Broad trends in Holocene...
Estimation of water surface elevations for the Everglades, Florida
Monica Palaseanu, Leonard Pearlstine
2008, Computers & Geosciences (34) 815-826
The Everglades Depth Estimation Network (EDEN) is an integrated network of real-time water-level monitoring gages and modeling methods that provides scientists and managers with current (2000–present) online water surface and water depth information for the freshwater domain of the Greater Everglades. This integrated system presents data on a 400-m...
Controls on late Quaternary coral reefs of the Florida Keys
Barbara H. Lidz, Eugene A. Shinn, J. Harold Hudson, Multer H. Gray, Robert B. Halley, Daniel M. Robbin
2008, Book chapter, Coral reefs of the USA
The Florida Keys is an arcuate, densely populated, westward-trending island chain at the south end of a karstic peninsular Florida Platform (Enos and Perkins 1977; Shinn et al. 1996; Kindinger el al. 1999, 2000). The "keys: mark the southernmost segment of the Atlantic continental margin of the United States. The...
Bacteriophage in polar inland waters
Christin Sawstrom, John Lisle, A.M. Anesio, John C. Priscu, J. Laybourn-Parry
2008, Extremophiles (12) 167-175
Bacteriophages are found wherever microbial life is present and play a significant role in aquatic ecosystems. They mediate microbial abundance, production, respiration, diversity, genetic transfer, nutrient cycling and particle size distribution. Most studies of bacteriophage ecology have been undertaken at temperate latitudes. Data on bacteriophages in polar inland waters are...
Evaluation of the sustainability of deep groundwater as an arsenic-safe resource in the Bengal Basin
Holly A. Michaela, Clifford I. Voss
2008, Proceedings of the National Academy of Sciences of the United States of America (105) 8531-8536
Tens of millions of people in the Bengal Basin region of Bangladesh and India drink groundwater containing unsafe concentrations of arsenic. This high-arsenic groundwater is produced from shallow (<100 m) depths by domestic and irrigation wells in the Bengal Basin aquifer system. The government of Bangladesh has begun to install...
A new towed platform for the unobtrusive surveying of benthic habitats and organisms
David G. Zawada, P.R. Thompson, J. Butcher
2008, Revista de Biología Tropical: International Journal of Tropical Biology and Conservation (56) 51-63
Maps of coral ecosystems are needed to support many conservation and management objectives, as well as research activities. Examples include ground-truthing aerial and satellite imagery, characterizing essential habitat, assessing changes, and monitoring the progress of restoration efforts. To address some of these needs, the U.S. Geological Survey developed the Along-Track...
Corals as bioindicators of climate change
Eugene A. Shinn
2008, Environmental Bioindicators (3) 149-152
Potential effects of climate change and ocean acidification have energized much discussion among coral scientists, especially biologists. Will corals go extinct, lose their skeletons, or migrate pole-ward to cooler waters? No one knows, but some simple experiments, recent observations, and recent studies may shed some light on these questions. Above...
Could mangroves be Tampa Bay's next cash crop?
Matthew Cimitile
2008, Bay Soundings
Obviously, no one is recommending cutting down mangroves to sell, but environmental managers are working toward putting a price tag on the benefits they provide to help ensure that they are protected. Though the process is just beginning here, estimates from studies in other locations indicate that the 15,000 acres...
Reef geology and biology of Navassa Island
Margaret W. Miller, Robert B. Halley, Arthur C.R. Gleason
2008, Book chapter, Coral reefs of the USA
Navassa is a small oceanic island (5.2km2 in size) located ~30km west of the southwest tip of Haiti, 160km south of the US Naval Base at Guantanamo Bay, Cuba, and in the heart of the Windward Passage. Navassa was claimed in 1856 by the United States. Navassa has also been...
A coral disease handbook: Guidelines for assessment, monitoring, and management
L. Raymundo, Thierry M. Work, A.W. Bruckner, B. Willis
L. Raymundo, C. A. Couch, C. D. Harvell, editor(s)
2008, Book chapter, A coral disease handbook: Guidelines for assessment, monitoring, and management
No abstract available....
Coral and crustose coralline algae disease on the reefs of American Samoa
G. Aeby, Thierry M. Work, D. Fenner, Eva DiDonato
2008, Conference Paper
Surveys for lesions in corals were conducted at seven sites around Tutuila in June 2004 and January 2005. The objectives of the study were to document the distribution and prevalence of disease in the major genera of corals and crustose coralline algae, systematically describe gross and microscopic morphology of lesions...
Site selection for DOE/JIP gas hydrate drilling in the northern Gulf of Mexico
Deborah Hutchinson, Dianna Shelander, J. Dai, D. McConnell, William Shedd, Matthew Frye, Carolyn D. Ruppel, R. Boswell, Emrys Jones, Timothy S. Collett, Kelly K. Rose, Brandon Dugan, Warren T. Wood
2008, Conference Paper, Proceedings of the 6th International Conference on Gas Hydrates (ICGH 2008)
In the late spring of 2008, the Chevron-led Gulf of Mexico Gas Hydrate Joint Industry Project (JIP) expects to conduct an exploratory drilling and logging campaign to better understand gas hydrate-bearing sands in the deepwater Gulf of Mexico. The JIP Site Selection team selected three areas to test alternative geological...
Submarine landslide as the source for the October 11, 1918 Mona Passage tsunami: Observations and modeling
A.M. López-Venegas, Uri S. ten Brink, Eric L. Geist
2008, Marine Geology (254) 35-46
The October 11, 1918 ML 7.5 earthquake in the Mona Passage between Hispaniola and Puerto Rico generated a local tsunami that claimed approximately 100 lives along the western coast of Puerto Rico. The area affected by this tsunami is now significantly more populated. Newly acquired high-resolution bathymetry and seismic reflection...
Total mercury and methylmercury in Indiana streams, August 2004-September 2006
Amanda L. Ulberg, Martin R. Risch
2008, Scientific Investigations Report 2008-5176
Total mercury and methylmercury were determined by use of low (subnanogram per liter) level analytical methods in 225 representative water samples collected following ultraclean protocols at 25 Indiana monitoring stations in a statewide network, on a seasonal schedule, August 2004-September 2006. The highest unfiltered total mercury concentrations were at six...
Linking soil organic matter dynamics and erosion-induced terrestrial carbon sequestration at different landform positions
Asmeret Asefaw Berhe, Jennifer W. Harden, Margaret S. Torn, John Harte
2008, Journal of Geophysical Research Biogeosciences (113)
Recently, the potential for terrestrial carbon (C) sequestration by soil erosion and deposition has received increased interest. Erosion and deposition constitute a sink for atmospheric carbon dioxide relative to a preerosional state or a noneroding scenario, if the posterosion watershed C balance is increased due to (1) partial replacement of...
Temporal Geochemistry Data from Five Springs in the Cement Creek Watershed, San Juan County, Colorado
Raymond H. Johnson, Laurie Wirt, Kenneth J. Leib
2008, Open-File Report 2007-1249
Temporal data from five springs in the Cement Creek watershed, San Juan County, Colorado provide seasonal geochemical data for further research in the formation of ferricretes. In addition, these data can be used to help understand the ground-water flow system. The resulting data demonstrate the difficulty in gathering reliable seasonal...
Electrical Resistivity and Seismic Surveys at the Nevada Test Site, Nevada, April 2007
Seth S. Haines, Bethany L. Burton, Donald S. Sweetkind, Theodore H. Asch
2008, Open-File Report 2008-1368
In April 2007, the USGS collected direct-current (DC) electrical resistivity data and shear- (S) and compressional- (P) wave seismic data to provide new detail of previously mapped, overlapping fault splays at two administrative areas in the Nevada Test Site (NTS). In NTS Area 7, we collected two-dimensional DC resistivity data...
Comparison of Atmospheric Deposition Among Three Sites In and Near the Flat Tops Wilderness Area, Colorado, 2003-2005
George P. Ingersoll, Donald H. Campbell, M. Alisa Mast
2008, Scientific Investigations Report 2008-5229
Atmospheric deposition was monitored for ammonium, nitrate, and sulfate concentrations and precipitation amounts in the Flat Tops Wilderness Area of northwestern Colorado at Ned Wilson Lake beginning in 1984 to detect changes that might result from future emissions associated with development of oil-shale resources in northwestern Colorado. Renewed monitoring, by...
Hydrogeologic Framework of Onslow County, North Carolina, 2008
Jason M. Fine
2008, Scientific Investigations Map 3055
The unconsolidated sediments that underlie the Onslow County area are composed of interlayered permeable and impermeable beds, which overlie the crystalline basement rocks. The aquifers, composed mostly of sand and limestone, are separated by confining units composed mostly of clay and silt. The aquifers from top to bottom are the...
Archive of digitized analog boomer seismic reflection data collected from Lake Pontchartrain, Louisiana, to Mobile Bay, Alabama, during cruises onboard the R/V ERDA-1, June and August 1992
Jordan M. Sanford, Arnell S. Harrison, Dana S. Wiese, James G. Flocks
2008, Data Series 370
In June and August of 1992, the U.S. Geological Survey (USGS) conducted geophysical surveys to investigate the shallow geologic framework from Lake Pontchartrain, Louisiana, to Mobile Bay, Alabama. This work was conducted onboard the Argonne National Laboratory's R/V ERDA-1 as part of the Mississippi/Alabama Pollution Project. This report is part...
Estimated use of water in South Dakota, 2005
Janet M. Carter, Kathleen M. Neitzert
2008, Scientific Investigations Report 2008-5216
During 2005, withdrawals from ground-water and surface-water sources in South Dakota for the eight categories of offstream use totaled about 500 million gallons per day (Mgal/d). Of total withdrawals, about 271 Mgal/d was withdrawn from ground water and about 230 Mgal/d was withdrawn from surface water. The largest use of...
