Filters: Tags: sediment (X)
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We characterized seafloor sediment conditions near the mouth of the Elwha River from underwater photographs taken every four hours from September 2011 to December 2013. A digital camera was affixed to a tripod that was deployed in approximately 10 meters of water (Tripod location from September 2011 to April 2013: 48.15333, -123.55931; tripod location from April 2013 to December 2013: 48.15407, -123.55444). Each photograph was qualitatively characterized as one of six categories: (1) base, or no sediment; (2) low sediment; (3) medium sediment; (4) high sediment; (5) turbid; or (6) kelp. For base conditions, no sediment was present on the seafloor. Low sediment conditions were characterized by a light dusting of...
Categories: Data;
Types: Citation,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Clallam County,
Elwha River,
Olympic Peninsula,
Remote Sensing,
State of Washington,
Categories: Publication;
Types: Citation;
Tags: Air Pollution,
Biochemical Oxygen Demand,
Chemical Oxygen Demand,
Gases,
Lakes,
Categories: Publication;
Types: Citation;
Tags: ASFA 3: Aquatic Pollution & Environmental Quality; Oceanic A,
Antifoulants,
Antifouling agents,
Aquatic Animals,
Aquatic organisms,
Categories: Publication;
Types: Citation;
Tags: Air pollution,
Aromatic hydrocarbons,
Atmospheric particulates,
Canada, Alberta,
Canada, Alberta,
Categories: Publication;
Types: Citation;
Tags: Australia, New South Wales,
Australia, New South Wales,
Baseline studies,
Benthos,
Carazziella victoriensis,
Categories: Publication;
Types: Citation;
Tags: ANW, USA, Maine, Kennebec Estuary,
Channels,
Data Collections,
Estuaries,
Estuarine sedimentation,
Categories: Publication;
Types: Citation;
Tags: ANW, USA, New York, Long Island, Great South Bay,
Beach,
Beach accretion,
Beach erosion,
Beaches,
Categories: Publication;
Types: Citation;
Tags: Aquatic Animals,
Aquatic organisms,
Aromatic Compounds,
Aromatic hydrocarbons,
Bioaccumulation,
Categories: Publication;
Types: Citation;
Tags: Algae,
Aromatic Compounds,
Aromatic hydrocarbons,
Biodegradation,
Bioremediation,
The glacial aquifer system of the United States encompasses all or parts of 25 states and is the most widely used supply of drinking water in the Nation (Maupin and Barber, 2005; Maupin and Arnold, 2010). A series of seven raster data sets were derived from a database of water-well drillers' records that was compiled in partial fulfillment of the goals of the U.S. Geological Survey’s Groundwater Availability and Use assessment program (U.S. Geological Survey, 2002). They contain hydrogeologic information for areas of the U.S. that are north of the southern limit of Pleistocene glaciation, including the total thickness of glacial deposits, thickness of coarse-grained sediment within the glacial deposits, specific-capacity...
The State of Alaska's Strategic and Critical Minerals (SCM) Assessment project, a State-funded Capital Improvement Project (CIP), is designed to evaluate Alaska's statewide potential for SCM resources. The SCM Assessment is being implemented by the Alaska Division of Geological & Geophysical Surveys (DGGS), and involves obtaining new airborne-geophysical, geological, and geochemical data. For the geochemical part of the SCM Assessment, thousands of historical geochemical samples from DGGS, U.S. Geological Survey (USGS), and U.S. Bureau of Mines archives are being reanalyzed by DGGS using modern, quantitative, geochemical-analytical methods. The objective is to update the statewide geochemical database to more clearly...
![]() This dataset depicts relative erosion rate derived for all land draining above the Mesoamerican reef. It is a function of slope, land cover type, precipitation and soil type. The indicators developed by the Reefs at Risk in the Caribbean project enable detailed comparative analyses of threats on many scales. The Reefs at Risk indicators are a simplification of human activities and complex natural processes. This data set was derived at the World Resources Institute for input to the sedimentation and pollution from watershed based sources threat analysis. Agriculture, though important to economic development and food security, is a source of increased sediment, nutrient, and pesticide runoff. Threats from sedimentation...
![]() Using basins derived from a hydrologically-corrected 30m resolution DEM as a unit for summary statistics, we provide a series of indicators focused on land-based sources of threat within the US Virgin Islands and Puerto Rico. This includes indicators of a) the relative vulnerability of the land to erosion (based on slope, precipitation and soil erodibility); b) the relative erosion potential (REP) of the land, based on the relative vulnerability of the land, coupled with the current land cover type; c) the sediment delivery rate for each basin (percentage of eroded which reaches the river mouth); d) estimated sediment delivery for the basin, given current land use;
The Alaska AMOCO geological sample collection contains sample number DR-41-I3 with the following attributes raw, core, sediment
Categories: Publication;
Types: Citation;
Tags: Birds,
Boise River,
Cost Assessments,
Cultural Resources,
Dams,
Categories: Publication;
Types: Citation;
Tags: E2 30 Parks, Refuges and Forests,
EIS: Digests of Environmental Impact Statements,
Erosion,
Fire Prevention,
Fires,
Categories: Publication;
Types: Citation;
Tags: Cultural Resources,
E2 50 Wastes,
EIS: Digests of Environmental Impact Statements,
Erosion,
Farmlands,
Categories: Publication;
Types: Citation;
Tags: Conservation,
Creeks,
Dams,
E2 55 Water,
EIS: Digests of Environmental Impact Statements,
Categories: Publication;
Types: Citation;
Tags: Burning (Prescribed),
E2 30 Parks, Refuges and Forests,
EIS: Digests of Environmental Impact Statements,
Erosion,
Forests,
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