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...
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,...
Bedrock structural controls on the occurrence of sinkholes and springs in the Northern Great Valley Karst, Virginia and West Virginia
Daniel H. Doctor, David J. Weary, Randall C. Orndorff, George E. Harlow Jr., Mark D. Kozar, David L. Nelms
2008, Conference Paper, Sinkholes and the Engineering and Environmental Impacts of Karst
Recent geologic mapping at a scale of 1:24,000 has enabled a qualitative correlation of the occurrence of springs and sinkholes with bedrock structures and ground-water conditions in the northern Great Valley of Virginia and West Virginia. Sinkholes tend to be concentrated in zones of faulting, local minor folding, and clustered...
The dynamics of coastal models
Clifford J. Hearn
2008, Book
Coastal basins are defined as estuaries, lagoons, and embayments. This book deals with the science of coastal basins using simple models, many of which are presented in either analytical form or Microsoft Excel or MATLAB. The book introduces simple hydrodynamics and its applications, from the use of simple box and...
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...
Cenozoic evolution of the abrupt Colorado Plateau–Basin and Range boundary, northwest Arizona: A tale of three basins, immense lacustrine-evaporite deposits, and the nascent Colorado River
J. E. Faulds, Keith A. Howard, E. M. Duebendorfer
E. M. Duebendorfer, E.I. Smith, editor(s)
2008, Book chapter, Field Guide to Plutons, Volcanoes, Faults, Reefs, Dinosaurs, and Possible Glaciation in Selected Areas pf Arizona, California, and Nevada
In northwest Arizona, the relatively unextended Colorado Plateau gives way abruptly to the highly extended Colorado River extensional corridor within the Basin and Range province along a system of major west-dipping normal faults, including the Grand Wash fault...
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...
Slowing of coastal subsidence is good news for restoration of Louisiana's wetlands
Matthew Cimitile, Helen Gibbons
2008, Sound Waves: Coastal science and research news from across the USGS
Every year, volunteers use thousands of discarded Christmas trees to build brush fences in the coastal waters of Louisiana. The fences slow down waves and trap sediment, allowing aquatic vegetation to take root in the still water and stimulating the growth of new marsh. This is one of many efforts...
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...
Recovering endemic plants of the Channel Islands
Kathryn McEachern
2008, Endangered Species Bulletin (33) 40-43
At the California Channel Islands, off the state’s southern coast, cold waters from the north mix with warmer waters from the south. Each of the eight Channel Islands, which were never connected to the mainland, developed unique floras as colonizing plants adapted to their new island homes. This part of...
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...
Range expansion of the Mayan cichlid, cichlasoma urophthalmus (pisces, cichlidae), above 28°N in Florida
R. Paperno, R. Ruiz-Carus, J.M. Krebs, C.C. McIvor
2008, Florida Scientist (71) 293-304
Introduced exotic species are a well-recognized problem in Florida's subtropical ecosystems. The presence of the exotic Mayan cichlid (Cichlasoma urophthalmus) was first confirmed in Florida in 1983, when numerous individuals were found in the northeastern Florida Bay. Since then, this species has continued to expand its range northward. The capture,...
Observations and a model of undertow over the inner continental shelf
Steven J. Lentz, Melanie Fewings, Peter Howd, Janet Fredericks, Kent Hathaway
2008, Journal of Physical Oceanography (38) 2341-2357
Onshore volume transport (Stokes drift) due to surface gravity waves propagating toward the beach can result in a compensating Eulerian offshore flow in the surf zone referred to as undertow. Observed offshore flows indicate that wave-driven undertow extends well offshore of the surf zone, over the inner shelves of Martha’s...
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...
Recent declines in western U.S. snowpack in the context of twentieth-century climate variability
Gregory J. McCabe, David M. Wolock
2008, American Meteorological Society, Journal of Hydrometeorology (13)
A monthly snow accumulation and melt model was used with monthly Precipitation-elevation Regressions on Independent Slopes Model (PRISM) temperature and precipitation data to generate time series of 1 April snow water equivalent (SWE) for 1900 through 2008 in the western United States. Averaged across the western United States, SWE generally...
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...
Coral reefs, present and past, on the west Florida shelf and platform margin: Chapter 4
Albert C. Hine, Robert B. Halley, Stanley D. Locker, B. D. Jarrett, Walter C. Jaap, David J. Mallinson, Katherine T. Ciembronowicz, Nancy B. Ogden, Brian Donahue, David Naar
2008, Book chapter, Coral reefs of the USA
This paper summarizes the geomorphic variability of these different reef types, their geologic setting, and the present coral-reef biological community. The paper is organized along a virtual depth transect by presenting different reef settings and types starting from the shallower mid-shelf or mid-ramp setting, moving to the shelf edge, and...
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...
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...
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...
Scientific objectives of the Gulf of Mexico gas hydrate JIP leg II drilling
Emrys Jones, T. Latham, Daniel R. McConnell, Matthew Frye, J.H. Hunt, William Shedd, Dianna Shelander, Ray Boswell, Kelly K. Rose, Carolyn D. Ruppel, Deborah R. Hutchinson, Timothy S. Collett, Brandon Dugan, Warren T. Wood
2008, Conference Paper, Offshore Technology Conference
The Gulf of Mexico Methane Hydrate Joint Industry Project (JIP) has been performing research on marine gas hydrates since 2001 and is sponsored by both the JIP members and the U.S. Department of Energy. In 2005, the JIP drilled the Atwater Valley and Keathley Canyon exploration blocks in the Gulf...
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...
