Publications
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Dust in the wind: long range transport of dust in the atmosphere and its implications for global public and ecosystem health
Movement of soil particles in atmospheres is a normal planetary process. Images of Martian dust devils (wind-spouts) and dust storms captured by NASA's Pathfinder have demonstrated the significant role that storm activity plays in creating the red atmospheric haze of Mars. On Earth, desert soils moving in the atmosphere are responsible for the orange hues in brilliant sunrises and sunsets. In seve
Authors
Dale W. Griffin, Christina A. Kellogg, Eugene A. Shinn
Coastal storms and shoreline change: signal or noise?
A linear regression (studentized) residual analysis was used to identify potential shoreline position outliers and to investigate the effect of the outliers on shoreline rate-of-change values for transects along the Outer Banks, North Carolina. Results from this analysis showed that, over a 134 year period, storm-influenced data contribute statistically significant information to the long-term sig
Authors
Michael S. Fenster, Robert Dolan, Robert A. Morton
Seafloor collapse and methane venting associated with gas hydrate on the Blake Ridge: causes and implications to seafloor stability and methane release
No abstract available.
Authors
William P. Dillon, Jeffrey W. Nealon, Michael H. Taylor, Myung W. Lee, Rebecca M. Drury, Christopher H. Anton
Sea-level and environmental changes since the last interglacial in the Gulf of Carpentaria, Australia: an overview
The Gulf of Carpentaria is an epicontinental sea (maximum depth 70 m) between Australia and New Guinea, bordered to the east by Torres Strait (currently 12 m deep) and to the west by the Arafura Sill (53 m below present sea level). Throughout the Quaternary, during times of low sea-level, the Gulf was separated from the open waters of the Indian and Pacific Oceans, forming Lake Carpentaria, an iso
Authors
Allan R. Chivas, Adriana Garcı́a, Sander van der Kaars, Martine Couapel, Sabine Holt, Jessica M. Reeves, David J. Wheeler, Adam D. Switzer, Colin V. Murray-Wallace, Debabrata Banerjee, David M. Price, Sue X. Wang, Grant Pearson, N. Terry Edgar, Luc Beaufort, Patrick de Deckker, Ewan Lawson, C. Blaine Cecil
USGS-NPS-NASA research on coastal change and habitats within US national seashores
No abstract available.
Authors
John Brock, Mark Duffy, William Krabill, Melanie Harris, Laura Moore, Asbury Sallenger
Fish species and community distributions as proxies for sea-floor habitat distributions: the Stellwagen Bank National Marine Sanctuary example (northwest Atlantic, Gulf Of Maine)
Defining the habitats of fishes and associated fauna on outer continental shelves is problematic given the paucity of data on the actual types and distributions of seafloor habitats. However many regions have good data on the distributions of fishes from resource surveys or catch statistics because of the economic importance of the fisheries. Fish distribution data (species or communities) have be
Authors
Peter J. Auster, Kevin Joy, Page C. Valentine
Planetary Interactive GIS-on-the-Web Analyzable Database (PIGWAD)
The United States Geological Survey (USGS) in Flagstaff, Arizona is producing a Web-based, user-friendly interface that integrates powerful Geographic Information Systems (GIS) statistical and spatial relational tools for analyses of planetary datasets. The interface, known as “Planetary Interactive GIS-on-the-Web Analyzable Database” (PIGWAD), provides database support for the research and academ
Authors
Trent M. Hare, Kenneth L. Tanaka
Observations and recommendations regarding landslide hazards related to the January 13, 2001 M-7.6 El Salvador earthquake
The January 13, 2001 earthquake (M-7.6) off the coast of El Salvador triggered widespread damaging landslides in many parts of the El Salvador. In the aftermath of the earthquake, the Salvadoran government requested technical assistance through the U.S. Agency for International Development (USAID); USAID, in turn, requested help from technical experts in landslide hazards from the U.S. Geological
Authors
Randall W. Jibson, Anthony J. Crone
Flash-flood related hazards: landslides, with examples from the December 1999 disaster in Venezuela Chapter 24
No abstract available.
Authors
Matthew C. Larsen, Maria Teresa Vasquez-Conde, R.A. Clark
Assessment of landslide hazards resulting from the February 13, 2001, El Salvador earthquake; a report to the government of El Salvador and the U. S. Agency for International Development
On February 13, 2001, a
magnitude 6.5 earthquake
occurred about 40 km eastsoutheast
of the capital city of San
Salvador in central El Salvador and
triggered thousands of landslides in
the area east of Lago de Ilopango.
The landslides are concentrated in a
2,500-km2 area and are particularly
abundant in areas underlain by
thick deposits of poorly consolidated,
late Pleistocene and Holoce
Authors
Rex L. Baum, Anthony J. Crone, Demetreo Escobar, Edwin L. Harp, Jon J. Major, Mauricio Martinez, Carlos Pullinger, Mark E. Smith
Did you feel it? Community-made earthquake shaking maps
Since the early 1990's, the magnitude and location of an earthquake have been available within minutes on the Internet. Now, as a result of work by the U.S. Geological Survey (USGS) and with the cooperation of various regional seismic networks, people who experience an earthquake can go online and share information about its effects to help create a map of shaking intensities and damage. Such 'Com
Authors
D. J. Wald, L. A. Wald, J. W. Dewey, Vince Quitoriano, Elisabeth Adams
Geophysics: Silent slip on the Cascadia subduction interface
Geodetic satellites of the Global Positioning System (GPS) now permit continuous recording of surface motions around earthquake faults and volcanoes with millimeter precision. Data from distinct points on Earth's surface can be combined to infer the locations of the sources of deformation at depth in the crust. These data are radically altering our understanding of earthquake processes, justifying
Authors
Wayne R. Thatcher