Found 4421 datasets matching "grab samples".
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High-resolution (15-minute frequency) monitoring of pH, dissolved oxygen, salinity, temperature, depth, and chlorophyll was conducted from July 15-October 1, 2015 in a shallow, subtidal seagrass...
Search relevance: 115.03 | Views last month: 4 -
Two 21-day field operations were conducted in 1997 and 1998 in the estuaries and on the inner continental shelf off the northern Oregon and southern Washington coast. These cruises aboard the R/V...
Search relevance: 89.81 | Views last month: 0 -
Two 21-day field operations were conducted in 1997 and 1998 in the estuaries and on the inner continental shelf off the northern Oregon and southern Washington coast. These cruises aboard the R/V...
Search relevance: 82.94 | Views last month: 5 -
The northeastern North Carolina coastal system, from False Cape, Virginia, to Cape Lookout, North Carolina, has been studied by a cooperative research program that mapped the Quaternary geologic...
Search relevance: 74.88 | Views last month: 0 -
Bear Lake is a tectonic lake that has existed for at least several hundred thousand years. The lake basin is a relatively simple half graben, a spoon-shaped depression tilted toward the main fault...
Search relevance: 74.77 | Views last month: 0 -
Benthic Macrofauna Sampling Data used to construct benthic habitat maps for FIIS. Data were collected during ground-truth surveys involving the collection of surficial grab samples of the...
Search relevance: 72.95 | Views last month: 1 -
This dataset compared the de facto reuse percentage modeled for the 22 surface water sites sampled in Phase II of the drinking water project and the organic chemical data generated as part of the...
Search relevance: 68.25 | Views last month: 0 -
Data associated with the Hydrobiologia article titled "Spatial and temporal dynamics of a freshwater eukaryotic plankton community revealed via 18S rRNA gene metabarcoding." They include the...
Search relevance: 65.64 | Views last month: 2 -
The U.S. Geological Survey (USGS) conducted a geophysical and sampling survey in October 2014 that focused on a series of shoreface-attached ridges offshore of western Fire Island, NY....
Search relevance: 59.60 | Views last month: 0 -
This dataset shows the sampling locations for the ground-truth survey conducted along Assateague Island National Seashore in October 2014 and October 2015. The ground-truth survey consisted of...
Search relevance: 59.51 | Views last month: 0 -
This dataset summarizes the species information derived from ground-truth survey conducted along Assateague Island National Seashore in October 2014 and October 2015. The ground-truth survey...
Search relevance: 59.29 | Views last month: 0 -
Geophysical and geological survey data were collected off Town Neck Beach in Sandwich, Massachusetts, in May and July 2016. Approximately 130 linear kilometers of subbottom (seismic-reflection)...
Search relevance: 58.51 | Views last month: 2 -
A geophysical and geological survey was conducted at the mouth of the Connecticut River from Old Saybrook to Essex, Connecticut, in September 2012. Approximately 230 linear kilometers of digital...
Search relevance: 57.74 | Views last month: 1 -
Beginning in late 1979, the Alabama Coastal Area Board (CAB) funded a series of baseline surveys on the coastal resources of Alabama, from which they could develop a monitoring program to observe...
Search relevance: 56.39 | Views last month: 0 -
Water samples were collected in south San Francisco Bay on four days in July 2020. The water samples were collected near pre-established USGS instrument moorings with a Niskin bottle, lowered from...
Search relevance: 55.79 | Views last month: 0 -
This portion of the data release presents sediment grain-size data from samples collected on the Elwha River delta, Washington, in May 2014 (USGS Field Activity 2014-620-FA). Surface sediment was...
Search relevance: 54.60 | Views last month: 0 -
Sediment grab samples were collected on the barriers and nearby seabed on and around Arey and Barter Islands, Alaska in July 2011 and analyzed for mean grain size. 43 terrestrial grab samples were...
Search relevance: 54.44 | Views last month: 0 -
Sediment grab samples were collected at 158 locations on the foreshore and beach in the vicinity of Wainwright, Alaska, in October of 2009. Two of the grab samples were sieved and analyzed for...
Search relevance: 54.31 | Views last month: 1 -
Benthic grab samples were collected using a Shipek grab at pre-determined locations in the harbor. Taxonomic enumerations and biological community parameters were estimated from grab samples and...
Search relevance: 53.77 | Views last month: 0 -
Benthic communities are structured by dynamically interacting factors that determine habitat quality. Since benthic macrofauna demonstrate strong and often narrowly defined affinities, forces...
Search relevance: 53.69 | Views last month: 0
