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Remote Sensing

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CMG research utilizes many kinds of remote sensing in our search for useful data: satellites collect information about the sea surface; sonar systems record sea-floor topography and the sub-surface structure; remotely-operated vehicles transmit video of the sea floor; buoys collect information about weather and water activity; and aircraft map nearshore topography.

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

These are results 1 through 25 of 217 matches.

Publication
EAARL Topography - Vicksburg National Military Park 2008: Bare Earth

Description: This DVD contains Lidar-derived bare earth (BE) topography GIS datasets of the Vicksburg National Military Park in Mississipi. These datasets were acquired on March 6, 2008.
updated: 2009-12-01 pages include:

Publication
EAARL Topography - Vicksburg National Military Park 2007: First Surface

Description: This DVD contains Lidar-derived first surface (FS) topography GIS datasets of the Vicksburg National Military Park in Mississipi. These datasets were acquired on September 12, 2007.
updated: 2009-11-01 pages include:

Research Project
Cascadia Seismic Hazard Studies

Description: Investigations of Earthquake and Tsunami Hazards and History in the Pacific Northwest, specifically the Cascadia Subduction Zone.
updated: 2009-07-24 pages include:

Educational Materials
Equipment Used in Marine Geology Research

Description: Description and links to information on nine types of marine geology research equipment used by the USGS Western Region Coastal & Marine Geology Team
updated: 2009-07-02 pages include:

General Information
WCMG Marine Facility Home Page

Description: Links to software downloads and documentation for YoNav and MudSeis systems used on Western Region Coastal and Marine Geology Team cruises.
updated: 2009-07-02 pages include:

Research Project
USGS Coral Reef Studies

Description: Coral Reef Studies conducted in Hawaii, Florida and California.
updated: 2009-06-24 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: 2009-06-10 pages include:

Research Project
USGS Northern Gulf of Mexico (NGOM)

Description: The goal of the USGS Northern Gulf of Mexico project is to understand the evolution of coastal ecosystems on the Northern Gulf Coast, the impact of human activities on these ecosystems, and the vulnerability of ecosystems and human communities to more frequent and more intense hurricanes in the future.
updated: 2009-05-28 pages include:

Publication
Scientific Investigations Report 2008-5094: Connections Among the Spatial and Temporal Structures in Tidal Currents, Internal Bores, and Surficial Sediment Distributions Over the Shelf off Palos Verdes, California

Description: The topography of the Continental Shelf in the central portion of the Southern California Bight has rapid variations over relatively small spatial scales. The width of the shelf off the Palos Verdes peninsula, just northwest of Los Angeles, California, is only 1 to 3 km. About 7 km southeast of the peninsula, the shelf within San Pedro Bay widens to about 20 km. In 2000, the Los Angeles County Sanitation District began deploying a dense array of moorings in this complex region of the central Southern California Bight to monitor local circulation patterns. Moorings were deployed at 13 sites on the Palos Verdes shelf and within the northwestern portion of San Pedro Bay. At each site, a mooring supported a string of thermistors and an adjacent bottom platform housed an Acoustic Doppler Current Profiler. These instruments collected vertical profiles of current and temperature data continuously for one to two years. The variable bathymetry in the region causes rapid changes in the amplitudes and spatial structures of barotropic tidal currents, internal tidal currents, and in the associated nonlinear baroclinic currents that occur at approximate tidal frequencies. The largest barotropic tidal constituent is M2, the principal semidiurnal tide. The amplitude of this tidal current changes over fairly short along-shelf length scales. Tidal-current amplitudes are largest in the transition region between the two shelves; they increase from about 5 cm/s over the northern San Pedro shelf to nearly 10 cm/s on the southern portion of the Palos Verdes Shelf. Tidal-current amplitudes are then reduced to less than 2 cm/s over the very narrow section of the northern Palos Verdes shelf that lies just 6 km upcoast of the southern sites. Models suggest that the amplitude of the barotropic M2 tidal currents, which propagate toward the northwest primarily as a Kelvin wave, is adjusting to the short topographic length scales in the region. Semidiurnal sea-level oscillations are, as expected, independent of these topographic variations; they have a uniform amplitude and phase structure over the entire region. Because the cross-shelf angle of the seabed over most of the Palos Verdes shelf is 1 to 3 degrees, which is critical for the local generation and/or enhancement of nonlinear characteristics in semidiurnal internal tides, some internal tidal-current events have strong asymmetric current oscillations that are enhanced near the seabed. Near-bottom currents in these events are directed primarily offshore with amplitudes that exceed 30 cm/s. The spatial patterns in these energetic near-bottom currents have fairly short-length scales. They are largest over the inner shelf and in the transition region between the Palos Verdes and San Pedro shelves. This spatial pattern is similar to that found in the barotropic tidal currents. Because these baroclinic currents have an approximate tidal frequency, an asymmetric vertical structure, and a somewhat stable phase, they can produce a non-zero depth-mean flow for periods of a few months. These baroclinic currents can interact with the barotropic tidal current and cause an apparent increase (or decrease) in the estimated barotropic tidal-current amplitude. The apparent amplitude of the barotropic tidal current may change by 30 to 80 percent or more in a current record that is less than three months long. The currents and surficial sediments in this region are in dynamic equilibrium in that the spatial patterns in bottom stresses generated by near-bed currents from surface tides, internal tides, and internal bores partly control the spatial patterns in the local sediments. Coarser sediments are found in the regions with enhanced bottom stresses (that is, over the inner shelf and in the region between the Palos Verdes and San Pedro shelves). Finer sediments are found over the northwestern portion of the Palos Verdes shelf, where near-bottom currents are relatively weak. The nonlinear asymmetries in the internal tidal-period current oscillations cause a net transport of suspended material along and off the shelf, reinforcing the mean flow patterns that also carry sediment either into Santa Monica Bay or offshore and onto the adjacent slope.
updated: 2009-05-28 pages include:

Map
National Seafloor Mapping and Characterization

Description: Images of the sea floor off the coasts of California, Hawaii, Florida, Mississippi, Alabama, Texas, Louisiana, and Washington; images of lake floor of Lake Michigan, Crater Lake, Lake Tahoe. Backscatter and swath bathymetry, regular and in 3-D view.
updated: 2009-05-11 pages include:

Publication
Coastal Change Along the Shore of Northeastern South Carolina: The South Carolina Coastal Erosion Study

Description: The U.S. Geological Survey, in cooperation with the South Carolina Sea Grant Consortium, conducted a 7-year, multi-disciplinary study of coastal erosion in northeastern South Carolina. The main objective was to understand the geologic and oceanographic processes that control sediment movement along the region's shoreline and thereby improve projections of coastal change. The study used high-resolution remote sensing and sampling techniques to define the geologic framework and assess historic shoreline change. Based on these findings, oceanographic-process studies and numerical modeling were carried out to determine the rates and directions of sediment transport along South Carolina's Grand Strand.
updated: 2009-05-01 pages include:

Research Project
Coastal Change Hazards: Hurricanes and Extreme Storms

Description: This project investigates the coastal impacts of hurricanes and extreme storms, such as Hurricanes Isabel (2003), Dennis (1999), Bonnie & Georges (1998), and winter storms, such as those associated with the 1997-98 El Ni�o.
updated: 2009-04-28 pages include:

Publication
Hurricane Ike: Observations and Analysis of Coastal Change

Description: Understanding storm-induced coastal change and forecasting these changes require knowledge of the physical processes associated with the storm and the geomorphology of the impacted coastline. The primary physical processes of interest are the wind field, storm surge, and wave climate. Not only does wind cause direct damage to structures along the coast, but it is ultimately responsible for much of the energy that is transferred to the ocean and expressed as storm surge, mean currents, and large waves. Waves and currents are the processes most responsible for moving sediments in the coastal zone during extreme storm events. Storm surge, the rise in water level due to the wind, barometric pressure, and other factors, allows both waves and currents to attack parts of the coast not normally exposed to those processes.
updated: 2009-04-07 pages include:

Publication
Open-File Report 2009-1029: Coastal processes study of Santa Barbara and Ventura Counties, California

Description: By Patrick L. Barnard, David L. Revell, Dan Hoover, Jon Warrick, John Brocatus, Amy E. Draut, Pete Dartnell, Edwin Elias, Neomi Mustain, Pat E. Hart, and Holly F. Ryan. The Santa Barbara littoral cell (SBLC) is a complex coastal system with significant management challenges. The coastline ranges broadly in exposure to wave energy, fluvial inputs, hard structures, and urbanization. Geologic influence (structural control) on coastline orientation exerts an important control on local beach behavior, with anthropogenic alterations and the episodic nature of sediment supply and transport also playing important roles.
updated: 2009-03-27 pages include:

Publication
Development of High-Resolution Digital Elevation Products along the Northern Gulf of Mexico Coast

Description: Poster Absract
updated: 2009-03-01 pages include:

Publication
EAARL Coastal Topography�Northeast Barrier Islands 2007: Bare Earth

Description: This DVD contains Lidar-derived bare earth (BE) topography GIS datasets of a portion of the northeast coastal barrier islands in New York and New Jersey. These datasets were acquired April 29-30 and May 15-16, 2007.
updated: 2009-03-01 pages include:

Publication
EAARL Coastal Topography - Northeast Barrier Islands 2007: First Surface

Description: This DVD contains Lidar-derived first surface (FS) topography GIS datasets of a portion of the northeast coastal barrier islands in New York and New Jersey. These datasets were acquired April 29-30 and May 15-16, 2007.
updated: 2009-03-01 pages include:

Publication
Open-File Report 2008-1191: Geologic Resource Evaluation of Kaloko-Honokōhau National Historical Park, Hawai�i; Geology and Coastal Landforms

Description: Geologic resource inventories of lands managed by the National Park Service (NPS) are important products for the parks and are designed to provide scientific information to better manage park resources. Park-specific geologic reports are used to identify geologic features and processes that are relevant to park ecosystems, evaluate the impact of human activities on geologic features and processes, identify geologic research and monitoring needs, and enhance opportunities for education and interpretation. These geologic reports are planned to provide a brief geologic history of the park and address specific geologic issues that link the park geology and the resource manager...
updated: 2009-02-19 pages include:

Publication
Open-File Report 2008-1192: Geologic Resource Evaluation of Pu�uhonua O Hōnaunau National Historical Park, Hawai�i; Part I, Geology and Coastal Landforms

Description: Geologic resource inventories of lands managed by the National Park Service (NPS) are important products for the parks and are designed to provide scientific information to better manage park resources. Park-specific geologic reports are used to identify geologic features and processes that are relevant to park ecosystems, evaluate the impact of human activities on geologic features and processes, identify geologic research and monitoring needs, and enhance opportunities for education and interpretation. These geologic reports are planned to provide a brief geologic history of the park and address specific geologic issues forming a link between the park geology and the resource manager...
updated: 2009-02-17 pages include:

Publication
USGS Gulf Coast Science Conference and Florida Integrated Science Center Meeting: Proceedings with Abstracts, October 20-23, 2008, Orlando, Florida

Description: Talks, posters, and abstracts from the USGS Gulf Coast Science Conference and Florida Integrated Science Center Meeting.
updated: 2009-01-29 pages include:

Publication
EAARL Topography-Colonial National Historical Park

Description: These Lidar-derived topography maps were produced as a collaborative effort between the U.S. Geological Survey (USGS) Coastal and Marine Geology Program, Florida Integrated Science Center (FISC) St. Petersburg, the National Park Service (NPS) Inventory and Monitoring Program, Northeast Coastal and Barrier Network, and the National Aeronautics and Space Administration (NASA), Wallops Flight Facility. One objective of this research is to create techniques to survey coral reefs, barrier islands, and various nearshore coastal environments for the purposes of geomorphic change studies, habitat mapping, ecological monitoring, change detection, and event assessment. As part of this project, data from an innovative instrument under development at the NASA Wallops Flight Facility, the NASA Experimental Airborne Advanced Research Lidar (EAARL) are being used. This sensor has the potential to make significant contributions in this realm for measuring subaerial and submarine topography wthin cross-environment surveys. High spectral resolution, water-column correction, and low costs were found to be key factors in providing accurate and affordable imagery to coastal resource managers.
updated: 2009-01-01 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: 2008-12-01 pages include:

Publication
EAARL Submerged Topography�U.S. Virgin Islands 2003

Description: This DVD contains Lidar-derived submerged topography GIS datasets of a portion of the U.S. Virgin Islands. These datasets were acquired on April 21, 23, and 30, May 2, and June 14 and 17, 2003.
updated: 2008-12-01 pages include:

Publication
EAARL Topography - Jean Lafitte National Historical Park and Preserve 2006

Description: This DVD contains Lidar-derived first surface (FS) and bare earth (BE) topography GIS datasets of Jean Lafitte National Historical Park and Preserve in Louisiana. These datasets were acquired on September 22, 2006.
updated: 2008-12-01 pages include:

Publication
EAARL Topography - Natchez Trace Parkway 2007: First Surface

Description: This DVD contains Lidar-derived first surface (FS) topography GIS datasets of a portion of the Natchez Trace Parkway in Mississipi. These datasets were acquired on September 14, 2007.
updated: 2008-12-01 pages include:

These are results 1 through 25 of 217 matches.

Coastal and Marine Geology Program > Online Science Resource Locator > Remote Sensing