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NOTE: Results below include only USGS Coastal & Marine Geology Program Publications that are available online. For a comprehensive search of all USGS Publications, visit Publications of the U.S. Geological Survey.

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

These are results 1 through 25 of 426 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 2008-1295: Coastal Circulation and Sediment Dynamics in Hanalei Bay, Kaua'i, Part IV, Measurements of Waves, Currents, Temperature, Salinity, and Turbidity, June-September 2006
Description: High-resolution measurements of waves, currents, water levels, temperature, salinity and turbidity were made in Hanalei Bay, northern Kaua‘i, Hawai‘i, during the summer of 2006 to better understand coastal circulation, sediment dynamics, and the potential impact of a river flood in a coral reef-lined embayment during quiescent summer conditions. A series of bottommounted instrument packages were deployed in water depths of 10 m or less to collect long-term, high-resolution measurements of waves, currents, water levels, temperature, salinity, and turbidity. These data were supplemented with a series of profiles through the water column to characterize the vertical and spatial variability in water column properties within the bay. These measurements support the ongoing process studies being conducted as part of the U.S. Geological Survey (USGS) Coastal and Marine Geology Program’s Pacific Coral Reef Project; the ultimate goal is to better understand the transport mechanisms of sediment, larvae, pollutants, and other particles in coral reef settings. Information regarding the USGS study conducted in Hanalei Bay during the 2005 summer is available in Storlazzi and others (2006), Draut and others (2006) and Carr and others (2006). This report, the last part in a series, describes data acquisition, processing, and analysis for the 2006 summer data set.
updated: 2008-10-08 pages include:

Publication
Open-File Report 2007-1219: Science and Management in the Hanalei Watershed, A Trans-Disciplinary Approach
Description: The results of recent studies in the Hanalei watershed are impressive, both in content and breadth. Funded, directed, and/or conducted by investigators from many disciplines from local organizations (the Hanalei Watershed Hui), the University of Hawai‘i, the State of Hawai‘i (Department of Health, Department of Land and Natural Resources), and Federal organizations (U.S. Department of Agriculture, U.S. Geological Survey, Environmental Protection Agency, National Oceanic and Atmospheric Agency), their sum total have contributed markedly to our understanding of processes in the watershed. There has been an overwhelming amount of information that has been collected in the Hanalei Bay Watershed from Mt. Waialeale to the far reefs in just the past 5 years. This workshop was initiated to document our collective understanding, better integrate our results, and identify the salient issues that remain to be studied.
updated: 2008-10-06 pages include:

Publication
Professional Paper 1756: The Role of Eolian Sediment in the Preservation of Archeologic Sites Along the Colorado River Corridor in Grand Canyon National Park, Arizona
Description: This report summarizes a 3-year study of eolian sedimentary processes in the Colorado River corridor, Grand Canyon National Park, Ariz., and discusses the relevance of those processes to the preservation of archeologic sites. The results reported here are based on detailed sedimentologic and geomorphologic investigations in three reaches of the river corridor, as well as continuous measurements of wind, rainfall, and sand transport at six sites for as long as 26 months, short-term field study at 35 other sites, examination of historical aerial photographs, and review of data collected and analyzed during previous studies. The data generated by this study, which involved collaboration with scientists of the U.S. Geological Survey (USGS) Grand Canyon Monitoring and Research Center, the National Park Service, Northern Arizona University, the Hopi Tribe, and GeoArch, Inc., were previously published by Draut and Rubin (2005, 2006, 2008) and Draut and others (2005, in press). This report, which supersedes that by Draut and Rubin (2007), provides an overview of the results and contains new conclusions regarding eolian sedimentary processes in the Colorado River ecosystem and their relevance to the preservation of archeologic sites.
updated: 2008-09-24 pages include:

Publication
Scientific Investigations Report 2008-5127: Channel Evolution on the Lower Elwha River, Washington, 1939-2006
Description: Analyses of historical aerial photographs of the lower Elwha River, Clallam County, Washington, reveal rates and patterns of channel change in this dammed, anabranching river between 1939 and 2006. Absolute positional changes of the active-floodplain margins, which commonly exceeded 50 m over that interval, have exceeded 400 m locally. Annualized rates of channel movement were typically ~2 to 10 m/yr; higher annualized rates over some time intervals are attributable to the formation of new channels by episodic avulsion. Channel movement by more gradual lateral meander migration was also common. Anthropogenic modification of the floodplain between the 1940s and 1980s substantially altered channel form and position. This analysis of rates and patterns of channel change over nearly 70 years on the lower Elwha River is intended to characterize the evolution of the river throughout most of the time interval when two large dams have been in place upstream. Channel morphology and rates of channel movement are expected to change significantly in response to removal of the dams and re-establishment of the upstream sediment supply during a major river-restoration project.
updated: 2008-09-16 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 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 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 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
Open-File Report 2004-1447: A Preliminary Assessment of Geologic Framework and Sediment Thickness Studies Relevant to Prospective US Submission on Extended Continental Shelf
Description: A compilation of marine seismic reflection and refraction profile data and derivative sediment thickness studies in the United States 200-mile Exclusive Economic Zone and beyond that would be relevant to a submission for extended continental shelf under the provisions of the United Nations Convention on the Law of the Sea (UNCLOS Article 76).
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
Data Series 366: Multibeam Sonar Mapping and Modeling of a Submerged Bryophyte Mat in Crater Lake, Oregon
Description: Traditionally, multibeam data have been used to map sea floor or lake floor morphology as well as the distribution of surficial facies in order to characterize the geologic component of benthic habitats. In addition to using multibeam data for geologic studies, we want to determine if these data can also be used directly to map the distribution of biota. Multibeam bathymetry and acoustic backscatter data collected in Crater Lake, Oregon, in 2000 are used to map the distribution of a deep-water bryophyte mat, which will be extremely useful for understanding the overall ecology of the lake. To map the bryophyte's distribution, depth range, acoustic backscatter intensity, and derived bathymetric index grids are used as inputs into a hierarchical decision-tree classification model. Observations of the bryophyte mat from over 23 line kilometers of lake-floor video collected in the summer of 2006 are used as controls for the model. The resulting map matches well with ground-truth information and shows that the bryophyte mat covers most of the platform surrounding Wizard Island as well as on outcrops around the caldera wall.
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:

Research Project
Santa Barbara-Ventura Coastal Processes Study - USGS WCMG
Description: Santa Barbara/Ventura Coastal Processes Study of the USGS Western Coastal and Marine Geology Team. Whereas coastal urban development and infrastructure are largely fixed with respect to location, shoreline and bluff positions can change substantially over time in response to natural processes. These natural coastal changes can damage or undermine urban structures, resulting in substantial property loss for federal, state, local and individual land owners. Urban development can also indirectly influence coastal change by interrupting natural supplies or transport of sediment in littoral cells. Thus, it is important to evaluate the rates, patterns and causes of coastal change to better manage sediment resources and predict change hazards in coastal urban settings. The Santa Barbara and Ventura County coast represents a littoral cell along the California coast extending from (at least) Point Conception to the Mugu submarine canyon. The beaches along this littoral cell are an important economic resource to the region, and there is evidence that shoreline and bluff erosion are impacting these beaches. Coastal change in the Santa Barbara/Ventura region is complicated, however, by the irregular coastline (there are numerous rocky headlands, river deltas and offshore reefs), variability in wave forcing, structures such as harbors, groins, piers, dams and landscape urbanization, variability in tectonic uplift, and limited information on littoral sediment sources. In response to the potential for coastal change, BEACON (Beach Erosion Authority for Clean Oceans and Nourishment) and the City of Carpinteria have provided a combined $700K in funding for USGS WCMG to evaluate the coastal change patterns and processes along the Santa Barbara/Ventura County coast until the end of 2008.
updated: 2008-08-12 pages include:

Research Project
Coastal Processes: San Francisco Bight Coastal Processes Study - USGS WCMG
Description: San Francisco Bight Coastal Processes Study of the USGS Western Coastal and Marine Geology Team. The USGS is conducting a study that documents and analyzes the processes that control the sand transport and sedimentation patterns of Ocean Beach, a National Park site within the Golden Gate National Recreation Area. This area encompasses a complicated coastal setting that is impacted by the tidal influence of San Francisco Bay, as well as the southwest and northwest Pacific swell. High-energy conditions at this site have restricted comprehensive field surveys in the past, but recent innovations in field techniques now make it possible to perform detailed analysis of the physical processes operating on high energy coastlines, such as Ocean Beach.
updated: 2008-08-12 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
Open-File Report 2007-1437: The Uniform California Earthquake Rupture Forecast, Version 2 (UCERF 2)
Description: A USGS, California Geological Survey, and Southern California Earthquake Center joint report: California’s 35 million people live among some of the most active earthquake faults in the United States. Public safety demands credible assessments of the earthquake hazard to maintain appropriate building codes for safe construction and earthquake insurance for loss protection. Seismic hazard analysis begins with an earthquake rupture forecast—a model of probabilities that earthquakes of specified magnitudes, locations, and faulting types will occur during a specified time interval. This report describes a new earthquake rupture forecast for California developed by the 2007 Working Group on California Earthquake Probabilities (WGCEP 2007).
updated: 2008-07-11 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
Open-File Report 2007-1304: Assessment of Groundwater Input and Water Quality Changes Impacting Natural Vegetation in the Loxahatchee River and Floodplain Ecosystem, Florida, Open File Report 2007-1304
Description: The Loxahatchee River and Estuary are small, shallow, water bodies located in southeastern Florida. Historically, the Northwest Branch (Fork) of the Loxahatchee River was primarily a freshwater system. In 1947, the river inlet at Jupiter was dredged for navigation and has remained permanently open since that time. Drainage patterns within the basin have also been altered significantly due to land development, road construction (e.g., Florida Turnpike), and construction of the C-18 and other canals. These anthropogenic activities along with sea level rise have resulted in significant adverse impacts on the ecosystem over the last several decades, including increased saltwater encroachment and undesired vegetation changes in the floodplain. The problem of saltwater intrusion and vegetation degradation in the Loxahatchee River may be partly induced by diminished freshwater input, from both surface water and ground water into the River system. The overall objective of this project was to assess the seasonal surface water and groundwater interaction and the influence of the biogeochemical characteristics of shallow groundwater and porewater on vegetation health in the Loxahatchee floodplain. The hypothesis tested are: (1) groundwater influx constitutes a significant component of the overall flow of water into the Loxahatchee River; (2) salinity and other chemical constituents in shallow groundwater and porewater of the river floodplain may affect the distribution and health of the floodplain vegetation.
updated: 2008-07-03 pages include:

Publication
Open-File Report 2008-1215: Winds, Waves, Tides, and the Resulting Flow Patterns and Fluxes of Water, Sediment, and Coral Larvae off West Maui, Hawaii
Description: A series of recent studies has focused on the flow patterns and particle fluxes along the coast of West Maui, Hawaii, USA, from Honolua south to Puumana. From those studies a relatively good understanding has emerged of the physical processes that influence the relative amount of suspended sediment in nearshore waters and the circulation patterns that transport sediment and coral larvae along the coast and between islands. This report is a synthesis of our existing knowledge on the nature of flow and transport off West Maui.
updated: 2008-07-02 pages include:

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