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Items below are listed from most recently updated to least recently updated.

These are results 1 through 25 of 215 matches.

Publication GIS Compilation, Data Collected, Pulley Ridge Deep Coral Reef Region, USGS OF 2005-1089, Title Page

Description: GIS compilation of data from the southern portion of Pulley Ridge on the Florida Platform.
updated: 2008-10-11       pages include:

Publication Open-File Report 2007-1112, Updated: The National Assessment of Shoreline Change: A GIS Compilation of Vector Cliff Edges and Associated Cliff Erosion Data for the California Coast

Description: USGS report titled, A GIS Compilation of Vector Shorelines and Associated Shoreline Change Data for the Sandy Shorelines of the California Coast; this report contains links to data coverage --GIS-- of shoreline change of sandy shorelines of the California Coast. Version 1.1. The data files in this version have been updated to correct for a projection error. All files and metadata now accurately reference the NAD83 datum.
updated: 2008-09-16       pages include:

Publication Scientific Investigations Report 2008-5128: Submarine ground-water discharge and fate along the coast of Kaloko-Honokohau National Historical Park, Island of Hawai'i--Part 2

Description: Submarine ground-water discharge and fate along the coast of Kaloko-Honokohau National Historical Park, Island of Hawai'i--Part 2, Spatial and temporal variations in salinity, radium-isotope activity, and nutrient concentrations in coastal waters, December 2003-April 2006
updated: 2008-08-29       pages include:

Publication Archive of Boomer Seismic Reflection Data Collected during USGS Cruise 99LCA01, Crescent Beach Spring, Florida, 26 April - 27 April, 1999

Description: This Open-File Report serves as an archive of field seismic data, associated navigation files, trackline maps, scanned logbooks, and formal seismic metadata, for boomer data collected on USGS Cruise 99LCA01.
updated: 2008-08-28       pages include:

Publication ARCHIVE OF BOOMER SEISMIC REFLECTION DATA COLLECTED DURING USGS FIELD ACTIVITIES 01ASR01, 01ASR02, 02ASR01, AND 02ASR02, MIAMI, FLORIDA, NOVEMBER 2001 - JANUARY 2002

Description: Presented on this web archive are processed seismic profiles, associated navigation files, trackline maps, logbooks, and formal metadata for boomer data collected on USGS Field Activities 01ASR01, 01ASR02, 02ASR01, and 02ASR02.
updated: 2008-08-28       pages include:

Publication ARCHIVE OF BOOMER SEISMIC REFLECTION DATA COLLECTED DURING USGS CRUISE 96CCT01, NEARSHORE SOUTH CENTRAL SOUTH CAROLINA COAST, JUNE 26 - JULY 1, 1996

Description: This archive presents unprocessed SEG-Y data files, processed seismic profiles, associated navigation files, trackline maps, logbooks, and formal metadata for boomer data collected on USGS Cruise 96CCT01.
updated: 2008-08-28       pages include:

Publication Archive of Boomer Seismic Reflection Data Collected During USGS Cruises 00SCC02 and 00SCC04, Barataria Basin, Louisiana, May 12 - 31 and June 17 - July 2, 2000

Description: This archive presents processed seismic profiles, associated navigation files, trackline maps, logbooks, and formal metadata for boomer data collected on USGS Cruises 00SCC02 and 00SCC04
updated: 2008-08-28       pages include:

Publication Archive of Boomer Seismic Reflection Data - U.S. Geological Survey Open-File Report 01-165

Description: This Open-File Report serves as an archive of field seismic data, associated navigation files, trackline map, scanned logbooks, and formal metadata, for boomer data collected on USGS Cruise 99ASR01. These data were recorded aboard the R/V G. K. Gilbert in Lake Okeechobee, Fla., on 29 June - 30 June, 1999.
updated: 2008-08-28       pages include:

Publication ARCHIVE OF CHIRP SEISMIC REFLECTION DATA COLLECTED DURING USGS CRUISES 00SCC02 AND 00SCC04, BARATARIA BASIN, LOUISIANA, MAY 12 - 31 AND JUNE 17 - JULY 2, 2000

Description: 00SCC02 AREA A - ARCHIVE OF CHIRP SEISMIC REFLECTION DATA COLLECTED DURING USGS CRUISES 00SCC02 AND 00SCC04, BARATARIA BASIN, LOUISIANA, MAY 12 - 31 AND JUNE 17 - JULY 2, 2000
updated: 2008-08-28       pages include:

Publication ARCHIVE OF DIGITAL BOOMER AND CHIRP SEISMIC REFLECTION DATA COLLECTED DURING USGS CRUISES 01RCE05 AND 02RCE01 IN THE LOWER ATCHAFALAYA RIVER, MISSISSIPPI RIVER DELTA, AND OFFSHORE SOUTHEASTERN LOUISIANA, OCTOBER 23-30, 2001, AND AUGUST 18-19, 2002

Description: n October of 2001 and August of 2002, the U.S. Geological Survey conducted geophysical surveys of the Lower Atchafalaya River, the Mississippi River Delta, Barataria Bay, and the Gulf of Mexico south of East Timbalier Island, Louisiana. This report serves as an archive of unprocessed digital marine seismic reflection data, trackline maps, navigation files, observers' logbooks, GIS information, and formal FGDC metadata. In addition, a filtered and gained GIF image of each seismic profile is provided. Refer to the Acronyms page for expansion of acronyms and abbreviations used in this report.
updated: 2008-08-28       pages include:

Educational Materials Tsunami and Earthquake Research at the USGS

Description: General information on how earthquakes generate tsunamis and summaries of tsunami research.
updated: 2008-08-01       pages include:

Publication Open-File Report 2008-1327 - Interferometric Sidescan Bathymetry, Sediment and Foraminiferal Analyses; a New Look at Tomales Bay, California

Description: U.S.G.S. Open-File Report 2008-1327 entitled, Interferometric Sidescan Bathymetry, Sediment and Foraminiferal Analyses; a New Look at Tomales Bay, California. The United States Geological Survey (USGS) in collaboration with Point Reyes National Sea Shore (PRNS), and the Tomales Bay Watershed Council [http://www.tomalesbaywatershed.org/] has completed a detailed bathymetric survey, and sediment and foraminiferal analyses of the floor of Tomales Bay, California. The study goals are to detail the submarine morphology, the sediment distribution, sedimentary features, and distribution of foraminifera to provide a framework for future studies. The USGS collected swath bathymetric data with a SEA SWATHplus interferometric sidescan sonar system (2004, 2005) and an echo sounder system (2006). The data were processed into continuous mosaic images that show bathymetric detail of the bay floor with 0.2-m vertical and 4.0–m horizontal resolution. Acoustic backscatter data from the 2004 and 2005 surveys were processed into 2-m resolution grids. In addition, 27 sediment samples were collected from various parts of the bay for grain size analyses and a comprehensive study of the distribution of foraminifera in Tomales Bay. The foraminiferal analysis determined that the invasive foraminifera Trochammina hadai from Japan was present in Tomales Bay. The project was conducted in response to a request from the National Park Service, and the Tomales Bay Watershed Council who voiced a need to look at the environmental impacts of human input to the surrounding watersheds that ultimately flow into the bay. The mapping, sediment, and foraminiferal data establish a baseline survey for future comparisons of possible geologic and anthropogenic changes that might occur due to changes in land use or development in the surrounding watershed. These data may also aid in determining the possible pathways of pollutants entering the bay from the surrounding watersheds.
updated: 2008-07-31       pages include:

Publication Open-File Report 2008-1246: High-Resolution Chirp and Mini-Sparker Seismic-Reflection Data From the Southern California Continental Shelf—Gaviota to Mugu Canyon

Description: The U.S. Geological Survey (USGS) collected high-resolution shallow seismic-reflection data in September, 2007, and June-July, 2008, from the continental shelf offshore of southern California between Gaviota and Mugu Canyon, in support of the California's State Waters Mapping Program. Data were acquired using SIG 2mille mini-sparker and Edgetech chirp 512 instruments aboard the R/V Zephyr (Sept. 2007) and R/V Parke Snavely (June-July 2008). The survey area spanned approximately 120 km of coastline, and included shore-perpendicular transects spaced 1.0-1.5 km apart that extended offshore to at least the 3-mile limit of State waters, in water depths ranging from 10 m near shore to 300 m near the offshore extent of Mugu and Hueneme submarine canyons. Subbottom acoustic penetration spanned tens to several hundred meters, variable by location. This report includes maps of the surveyed transects, linked to Google Earth™ software, as well as digital data files showing images of each transect in SEG-Y, JPEG, and TIFF formats. The images of sediment deposits, tectonic structure, and natural-gas seeps collected during this study provide geologic information that is essential to coastal zone and resource management at Federal, State and local levels, as well as to future research on the sedimentary, tectonic, and climatic record of southern California.
updated: 2008-07-29       pages include:

Publication Data Series 288: Beach Morphology Monitoring in the Elwha River Littoral Cell, 2004-2006

Description: his report describes the methods used, data collected, and results of the Beach Morphology Monitoring Program in the Elwha River Littoral Cell, starting in 2004. The U.S. Geological Survey and the Washington State Department of Ecology collaborated in the data collection with the support of the local Lower Elwha Klallam Tribe. Beach monitoring efforts consisted of collecting topographic and bathymetric horizontal and vertical position data by using a Real Time Kinematic Differential Global Positioning System (RTK-DGPS). The monitoring program was designed to characterize the littoral system of the Elwha River before the scheduled removal of two large dams in 2012. A primary objective of this work is to quantitatively describe the topography and bathymetry of the Elwha River littoral system so that the effects of dam removal may be quantified. Sediment inputs following dam removal are hypothesized to result in (A) larger amounts of fine sediment grain-sizes entering the littoral system and, (B) a reduction or reversal of coastal erosion.
updated: 2008-07-11       pages include:

Publication EAARL Topography-Thomas Stone National

Description: Digital map atlas of lidar-derived topography maps for Thomas Stone National Historic Site
updated: 2008-04-28       pages include:

Publication USGS-NPS-NASA EAARL Submarine Topography-Northern Florida Keys

Description: Digital map atlas of lidar-derived submarine topography maps for the Northern Florida Keys Reef Tract
updated: 2008-04-25       pages include:

Publication EAARL Topography-Sagamore Hill National Historic Site (SAHI)

Description: Digital atlas of lidar-derived topography maps for Sagamore Hill National Historic Site
updated: 2008-04-24       pages include:

Publication EAARL Topography-Gateway National Recreation Area-Home

Description: Digital map atlas of lidar-derived topography maps for the Gateway National Recreation Area
updated: 2008-04-23       pages include:

Publication EAARL Submarine Topography-Florida Keys National Marine

Description: Digital atlas of Lidar-derived submarine topography maps for Florida Keys National Marine Sanctuary
updated: 2008-04-21       pages include:

Publication EAARL First Return Topography—Fire Island National Seashore

Description: Digital map atlas of lidar-derived topography maps for Assateague Island National Seashore
updated: 2008-04-21       pages include:

Publication USGS-NPS-NASA EAARL Bare Earth Topography - Fire Island National Seashore

Description: Digital map atlas of Lidar-derived topography maps for Fire Island National Seashore
updated: 2008-04-21       pages include:

Publication EAARL Topography-Gulf Islands National Seashore (GUIS)-Florida

Description: Digital atlas of lidar-derived bare earth topography maps for Gulf Islands National Seashore-Florida
updated: 2008-04-17       pages include:

Publication USGS-NPS-NASA EAARL Topography - George Washington Birthplace

Description: Digital map atlas of lidar-derived topography maps for George Washington Birthplace National Monument
updated: 2008-04-17       pages include:

Publication EAARL Topography-Cape Cod National Seashore-OF_2007-1375

Description: Digital atlas of lidar-derived bare earth topography maps for Cape Cod National Seashore
updated: 2008-04-17       pages include:

Publication USGS-NPS-NASA EAARL Topography - Dry Tortugas National Park

Description: This lidar-derived submarine topography map was produced as a collaborative effort between the U.S. Geological Survey (USGS) Coastal and Marine Geology Program, National Park Service (NPS) South Florida/Caribbean Network Inventory and Monitoring Program, and the National Aeronautics and Space Administration (NASA) Wallops Flight Facility. One objective of this research is to create techniques to survey coral reefs for the purposes of habitat mapping, ecological monitoring, change detection, and event assessment (for example: bleaching, hurricanes, disease outbreaks).
updated: 2008-03-24       pages include:

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