Descriptions and characterizations of water-level data and groundwater flow for the Brewster Boulevard and Castle Hayne Aquifer Systems and the Tarawa Terrace Aquifer
Robert E. Faye, L. Elliott Jones, René J. Suárez-Soto
2013, Report, Analyses and historical reconstruction of groundwater flow, contaminant fate and transport, and distribution of drinking water within the service areas of the Hadnot Point and Holcomb Boulevard Water Treatment Plants and Vicinities, U.S. Marine Corps Base Camp Lejeune, North Carolina
This supplement of Chapter A (Supplement 3) summarizes results of analyses of groundwater-level data and describes corresponding elements of groundwater flow such as vertical hydraulic gradients useful for groundwater-flow model calibration. Field data as well as theoretical concepts indicate that potentiometric surfaces within the study area are shown to resemble...
Pacific island landbird monitoring annual report, National Park of American Samoa, Ta‘u and Tutuila units, 2011
Seth W. Judge, Richard J. Camp, Visa Vaivai, Patrick J. Hart
2013, National Park Service Natural Resource Technical Report NPS/PACN/NRTR—2013/666
The National Park of American Samoa (NPSA) was surveyed for landbirds and habitat characteristics from June through August, 2011. This information provides the first data in the time-series of landbird monitoring for long-term trends in forest bird distribution, density, and abundance within the NPSA. The NPSA survey area was comprised...
Expression of terrain and surface geology in high-resolution helicopter-borne gravity gradient (AGG) data: examples from Great Sand Dunes National Park, Rio Grande Rift, Colorado
Benjamin J. Drenth
2013, The Leading Edge (32) 924-930
Airborne gravity gradient (AGG) data are rapidly becoming standard components of geophysical mapping programs, due to their advantages in cost, access, and resolution advantages over measurements of the gravity field on the ground. Unlike conventional techniques that measure the gravity field, AGG methods measure derivatives of the gravity field. This...
Harmonizing multiple methods for reconstructing historical potential and reference evapotranspiration
Getachew Belaineh, David Sumner, Edward Carter, David Clapp
2013, Journal of Hydrologic Engineering (19)
Potential evapotranspiration (PET) and reference evapotranspiration (RET) data are usually critical components of hydrologic analysis. Many different equations are available to estimate PET and RET. Most of these equations, such as the Priestley-Taylor and Penman- Monteith methods, rely on detailed meteorological data collected at ground-based weather stations. Few weather stations...
Using habitat suitability models to target invasive plant species surveys
Alycia W. Crall, Catherine S. Jarnevich, Brendon Panke, Nick Young, Mark Renz, Jeffrey Morisette
2013, Ecological Applications (23) 60-72
Managers need new tools for detecting the movement and spread of nonnative, invasive species. Habitat suitability models are a popular tool for mapping the potential distribution of current invaders, but the ability of these models to prioritize monitoring efforts has not been tested in the field. We tested the utility...
Home range and use of habitat of western yellow-billed cuckoos on the middle Rio Grande, New Mexico
Juddson Sechrist, Darrell Ahlers, Katherine Potak Zehfuss, Robert Doster, Eben H. Paxton, Vicky M. Ryan
2013, Southwestern Naturalist (58) 411-419
The western yellow-billed cuckoo (Coccyzus americanus occidentalis) is a Distinct Population Segment that has been proposed for listing under the Endangered Species Act, yet very little is known about its spatial use on the breeding grounds. We implemented a study, using radio telemetry, of home range and use of habitat...
Comparing mechanisms of host manipulation across host and parasite taxa
Kevin D. Lafferty, Jenny C. Shaw
2013, Journal of Experimental Biology (216) 56-66
Parasites affect host behavior in several ways. They can alter activity, microhabitats or both. For trophically transmitted parasites (the focus of our study), decreased activity might impair the ability of hosts to respond to final-host predators, and increased activity and altered microhabitat choice might increase contact rates between hosts and...
Pacific Island landbird monitoring annual report, Haleakalā National Park, 2012
Seth W. Judge, Richard J. Camp, Patrick J. Hart
2013, National Park Service Natural Resource Technical Report NPS/PACN/NRTR—2013/740
Haleakalā National Park (HALE) was surveyed for landbirds and habitat characteristics from March 20 through July 26, 2012. This information provides data in the time-series of landbird monitoring for long-term trends in forest bird distribution, density, and abundance. The Kīpahulu District of eastern Haleakalā Volcano was surveyed using point-transect distance...
SPARROW models used to understand nutrient sources in the Mississippi/Atchafalaya River Basin
Dale M. Robertson, David A. Saad
2013, Journal of Environmental Quality (42) 1422-1440
Nitrogen (N) and phosphorus (P) loading from the Mississippi/Atchafalaya River Basin (MARB) has been linked to hypoxia in the Gulf of Mexico. To describe where and from what sources those loads originate, SPAtially Referenced Regression On Watershed attributes (SPARROW) models were constructed for the MARB using geospatial datasets for 2002,...
The influence of precipitation, vegetation and soil properties on the ecohydrology of sagebrush steppe rangelands on the INL site
Matthew J. Germino
2013, Report
The INL Site and other landscapes having sagebrush steppe vegetation are experiencing a simultaneous change in climate and floristics that result from increases in exotic species. Determining the separate and combined/interactive effects of climate and vegetation change is important for assessing future changes on the landscape and for hydrologic processes. This...
A natural resource condition assessment for Sequoia and Kings Canyon National Parks: Appendix 22: climatic change
Adrian J. Das, Nathan L. Stephenson
2013, Natural Resource Report NPS/SEKI/NRR--2013/665.22
Climate is a master controller of the structure, composition, and function of biotic communities, affecting them both directly, through physiological effects, and indirectly, by mediating biotic interactions and by influencing disturbance regimes. Sequoia and Kings Canyon National Park’s (SEKI’s) dramatic elevational changes in biotic communities -- from warm mediterranean to...
Monitoring vegetation response to episodic disturbance events by using multitemporal vegetation indices
Gregory D. Steyer, Brady R. Couvillion, John A. Barras
2013, Journal of Coastal Research 118-130
Normalized Difference Vegetation Index (NDVI) derived from MODerate-resolution Imaging Spectroradiometer (MODIS) satellite imagery and land/water assessments from Landsat Thematic Mapper (TM) imagery were used to quantify the extent and severity of damage and subsequent recovery after Hurricanes Katrina and Rita of 2005 within the vegetation communities of Louisiana's coastal wetlands....
The environmental-data automated track annotation (Env-DATA) system: linking animal tracks with environmental data
Somayeh Dodge, Gil Bohrer, Rolf P. Weinzierl, Sarah C. Davidson, Roland Kays, David C. Douglas, Sebastian Cruz, J. Han, David Brandes, Martin Wikelski
2013, Movement Ecology (1) 1-14
The movement of animals is strongly influenced by external factors in their surrounding environment such as weather, habitat types, and human land use. With advances in positioning and sensor technologies, it is now possible to capture animal locations at high spatial and temporal granularities. Likewise, scientists have an increasing access...
Marsh collapse thresholds for coastal Louisiana estimated using elevation and vegetation index data
Brady R. Couvillion, Holly Beck
2013, Journal of Coastal Research 58-67
Forecasting marsh collapse in coastal Louisiana as a result of changes in sea-level rise, subsidence, and accretion deficits necessitates an understanding of thresholds beyond which inundation stress impedes marsh survival. The variability in thresholds at which different marsh types cease to occur (i.e., marsh collapse) is not well understood. We...
Flying with the wind: Scale dependency of speed and direction measurements in modelling wind support in avian flight
Kamran Safi, Bart Kranstauber, Rolf P. Weinzierl, Larry Griffin, Eileen C. Reese, David Cabot, Sebastian Cruz, Carolina Proaño, John Y. Takekawa, Scott H. Newman, Jonas Waldenstrom, Daniel Bengtsson, Roland Kays, Martin Wikelski, Gil Bohrer
2013, Movement Ecology (1)
Background: Understanding how environmental conditions, especially wind, influence birds' flight speeds is a prerequisite for understanding many important aspects of bird flight, including optimal migration strategies, navigation, and compensation for wind drift. Recent developments in tracking technology and the increased availability of data on large-scale weather patterns have made it...
The magnetic tides of Honolulu
Jeffrey J. Love, Erin Joshua Rigler
2013, Conference Paper, Progress in EM Induction Studies of Crust and Mantle From Land, Sea, Air, and Space lll Posters
We review the phenomenon of time-stationary, periodic quiet-time geomagnetic tides. These are generated by the ionospheric and oceanic dynamos, and, to a lesser-extent, by the quiet-time magnetosphere, and they are affected by currents induced in the Earth's electrically conducting interior. We examine historical time series of hourly magnetic-vector measurements made...
Very long period conduit oscillations induced by rockfalls at Kilauea Volcano, Hawaii
Bernard A. Chouet, Phillip B. Dawson
2013, Journal of Geophysical Research B: Solid Earth (118) 5352-5371
Eruptive activity at the summit of Kilauea Volcano, Hawaii, beginning in 2010 and continuing to the present time is characterized by transient outgassing bursts accompanied by very long period (VLP) seismic signals triggered by rockfalls from the vent walls impacting a lava lake in a pit within the Halemaumau pit...
The Chaitén rhyolite lava dome: Eruption sequence, lava dome volumes, rapid effusion rates and source of the rhyolite magma
John S. Pallister, Angela K. Diefenbach, William C. Burton, Jorge Munoz, Julia P. Griswold, Luis E. Lara, Jacob B. Lowenstern, Carolina E. Valenzuela
2013, Andean Geology (40) 277-294
We use geologic field mapping and sampling, photogrammetric analysis of oblique aerial photographs, and digital elevation models to document the 2008-2009 eruptive sequence at Chaitén Volcano and to estimate volumes and effusion rates for the lava dome. We also present geochemical and petrologic data that contribute to understanding the source...
Metadata squared: enhancing its usability for volunteered geographic information and the GeoWeb
Barbara S. Poore, Eric B. Wolf
Daniel Z. Sui, Sarah Elwood, Michael F. Goodchild, editor(s)
2013, Book chapter, Crowdsourcing geographic knowledge volunteered geographic information (VGI) in theory and practice
The Internet has brought many changes to the way geographic information is created and shared. One aspect that has not changed is metadata. Static spatial data quality descriptions were standardized in the mid-1990s and cannot accommodate the current climate of data creation where nonexperts are using mobile phones and other...
A statistical analysis of the global historical volcanic fatalities record
Melanie Rose Auker, Robert Stephen John Sparks, Lee Siebert, H. S. Crosweller, John W. Ewert
2013, Journal of Applied Volcanology (2) 1-24
A new database of volcanic fatalities is presented and analysed, covering the period 1600 to 2010 AD. Data are from four sources: the Smithsonian Institution, Witham (2005), CRED EM-DAT and Munich RE. The data were combined and formatted, with a weighted average fatality figure used where more than one...
Ambient seismic noise interferometry in Hawai'i reveals long-range observability of volcanic tremor
Silke Ballmer, Cecily J. Wolfe, Paul G. Okubo, Matthew M. Haney, Clifford H. Thurber
2013, Geophysical Journal International (194) 512-523
The use of seismic noise interferometry to retrieve Green's functions and the analysis of volcanic tremor are both useful in studying volcano dynamics. Whereas seismic noise interferometry allows long-range extraction of interpretable signals from a relatively weak noise wavefield, the characterization of volcanic tremor often requires a dense seismic array...
Current status, issues and applications of GIS to inland fisheries
William Fisher
Geoffery J. Meaden, Jose Aguilar-Manjarrez, editor(s)
2013, Book chapter, Advances in geographic information systems and remote sensing for fisheries and aquaculture: Summary version (FAO Fisheries and Aquaculture Technical Paper 552)
This chapter is concerned with GIS applications made to inland fisheries. These include fisheries in freshwater rivers, lakes and reservoirs. Although these GIS applications have increased rapidly since the late 1980s, this area of fish production receives less attention than either aquaculture or marine fisheries. This is probably because inland...
Temporal and spatial variation in bird and human use of beaches in southern California
Kevin D. Lafferty, Donald A. Rodriguez, Angela Chapman
2013, SpringerPlus (2) 1-14
Southern California’s beaches can support a remarkable diversity of birds along the Pacific Flyway. We asked whether seasonal, annual, and spatial factors affect bird richness and abundance on public beaches. To do so, we conducted three years of monthly bird surveys on 12 sandy beaches in Ventura California. Across all...
Use of gene-expression programming to estimate Manning’s roughness coefficient for high gradient streams
H. Azamathulla, Robert D. Jarrett
2013, Water Resources Management (27) 715-729
Manning’s roughness coefficient (n) has been widely used in the estimation of flood discharges or depths of flow in natural channels. Therefore, the selection of appropriate Manning’s nvalues is of paramount importance for hydraulic engineers and hydrologists and requires considerable experience, although extensive guidelines are available. Generally,...
Knowledge, transparency, and refutability in groundwater models, an example from the Death Valley regional groundwater flow system
Mary C. Hill, Claudia C. Faunt, Wayne Belcher, Donald S. Sweetkind, Claire R. Tiedeman, Dmitri Kavetski
2013, Physics and Chemistry of the Earth, Parts A/B/C (64) 105-116
This work demonstrates how available knowledge can be used to build more transparent and refutable computer models of groundwater systems. The Death Valley regional groundwater flow system, which surrounds a proposed site for a high level nuclear waste repository of the United States of America, and the Nevada National Security...
