Publications
Filter Total Items: 7240
Public geoscience at the frontiers of democracy
No abstract available.
Authors
Deborah R. Hutchinson, Richard S. Williams
Cartographic production for the Florida Shelf Habitat (FLaSH) map study: generation of surface grids, contours, and KMZ files
The Florida shelf represents a finite source of economic resources, including commercial and recreational fisheries, tourism, recreation, sand and gravel resources, phosphate, and freshwater reserves. Yet the basic information needed to locate resources, or to interpret and utilize existing data, comes from many sources, dates, and formats. A multi-agency effort is underway to coordinate and prior
Authors
Lisa L. Robbins, Mark Hansen, Ellen Raabe, Paul O. Knorr, Joseph Browne
USGS Tampa Bay Pilot Study
Many of the nation's estuaries have been environmentally stressed since the turn of the 20th century and will continue to be impacted in the future. Tampa Bay, one the Gulf of Mexico's largest estuaries, exemplifies the threats that our estuaries face (EPA Report 2001, Tampa Bay Estuary Program-Comprehensive Conservation and Management Plan (TBEP-CCMP)). More than 2 million people live in the Tamp
Authors
K. K. Yates, T. M. Cronin, M. Crane, M. Hansen, A. Nayeghandi, P. Swarzenski, T. Edgar, G. R. Brooks, B. Suthard, A. Hine, S. Locker, D. A. Willard, D. Hastings, B. Flower, D. Hollander, R.A. Larson, K. Smith
Atmospheric movement of microorganisms in clouds of desert dust and implications for human health
Billions of tons of desert dust move through the atmosphere each year. The primary source regions, which include the Sahara and Sahel regions of North Africa and the Gobi and Takla Makan regions of Asia, are capable of dispersing significant quantities of desert dust across the traditionally viewed oceanic barriers. While a considerable amount of research by scientists has addressed atmospheric pa
Authors
Dale W. Griffin
Triggering mechanism and tsunamogenic potential of the Cape Fear Slide complex, U.S. Atlantic margin
Analysis of new multibeam bathymetry data and seismic Chirp data acquired over the Cape Fear Slide complex on the U.S. Atlantic margin suggests that at least 5 major submarine slides have likely occurred there within the past 30,000 years, indicating that repetitive, large-scale mass wasting and associated tsunamis may be more common in this area than previously believed. Gas hydrate deposits and
Authors
Matthew J. Hornbach, Luc L. Lavier, Carolyn D. Ruppel
GIS data for the Seaside, Oregon, Tsunami Pilot Study to modernize FEMA flood hazard maps
A Tsunami Pilot Study was conducted for the area surrounding the coastal town of Seaside, Oregon, as part of the Federal Emergency Management's (FEMA) Flood Insurance Rate Map Modernization Program (Tsunami Pilot Study Working Group, 2006). The Cascadia subduction zone extends from Cape Mendocino, California, to Vancouver Island, Canada. The Seaside area was chosen because it is typical of many co
Authors
Florence L. Wong, Angie J. Venturato, Eric L. Geist
The contribution of geomagnetic observatories and magnetic models to the study of secular variation and jerks in Antarctica
Some of the most interesting features of the geomagnetic field and its time variations are displayed in polar
areas. Observatory monthly means usually provide an excellent opportunity to study the temporal changes of the
magnetic field at a given location. Unfortunately, on the Antarctic continent the distribution of the permanent ground-
based observatories does not permit a uniform coverage of t
Authors
A. Meloni, L. Cafarella, P. De Michelis, R. Tozzi
Recommendations for a barrier island breach management plan for Fire Island National Seashore, including the Otis Pike High Dune Wilderness Area, Long Island, New York
The U.S Army Corps of Engineers, New York District is developing engineering plans, including
economic costs and benefits, for storm damage reduction along an 83 mile stretch of the coastal
barrier islands and beaches on the south shore of Long Island, NY from Fire Island Inlet east to the
Montauk Point headland. The plan, expected to include various alternatives for storm protection and
erosi
Authors
S. Jeffress Williams, Mary K. Foley
Book review: Remote sensing of mountain glaciers and permafrost creep
No abstract available.
Authors
Richard S. Williams
Statistical methods for paleovector analysis
Our concern is with the statistical description of paleomagnetic vectors and the estimation of their mean and variance. These vectors may come from a number of different rock units or archeological samples, representing a range of acquisition times, and be useful for studies of the mean paleomagnetic field and paleosecular variation; alternatively, the vectors may come from individual measurements
Authors
Jeffrey J. Love
Integration of seafloor point data in usSEABED
Sediments of the beach, nearshore, and continental shelves record a complex interplay of processes including wave energy and direction , currents, beach erosion or accretion, bluff or cliff retreat, fluvial input, sediment longshore and cross-shelf transport processes, contaminant content and transport, sediment sources and sinks, and others. In turn, sediments and rocks modify wave patterns, affe
Authors
Jane A. Reid, S. Jeffress Williams, Mark Zimmermann, Chris Jenkins, Nadine E. Golden
Principal component analysis in paleomagnetism
When studying the mean and variance of paleomagnetic data it is a common practice to employ principal component analysis (Jolliffe, 2002). The theory of this method is related to the mathematics quantifying the moment of inertia of a set of particles of mass about some reference point of interest. For the purposes of data analysis, principal component analysis was first promoted by Pearson (1901)
Authors
Jeffrey J. Love