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Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

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Popis

The objective of this project was to investigate whether cooperative biomass surveys can be an effective way to manage fisheries at the local scales that are important to predators such as Steller sea lions. To satisfy this objective we conducted wintertime (February-March) acoustic surveys of pollock in the central Aleutian Islands from a commercial vessel equipped with scientific quality ES60 echosounders in 2006, through 2008, and from a NOAA research vessel in 2008. With the fishery vessel and the NOAA vessel acoustic data, we documented the distribution of wintertime aggregations of spawning pollock in the central Aleutian Islands. We found that aggregations were stable within the season and consistent between years.


Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

Datum vydání před více než 9 roky

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Line point intercept (LPI) surveys and benthic composition assessments were conducted during Rapid Ecological Assessments (REA) as part of the Pacific Reef Assessment and Monitoring Program (RAMP) cruise HA1008 in Main Hawaiian Islands from 20101007 to 20101105. Surveys are conducted by the Coral Reef Ecosystem Division (CRED) of the NOAA Pacific Islands Fisheries Science Center (PIFSC) at biennial intervals to support a long-term NOAA Coral Reef Conservation Program (CRCP) for sustainable management and conservation of coral reef ecosystems. During the cruise, 6 REA sites were surveyed at Lanai in Main Hawaiian Islands. Benthic biologists from NOAA's Coral Reef Ecosystem Division conducted Line Point Intercept surveys to quantitatively document the benthic cover at pre-determined long-term monitoring REA sites. Two linear 25 m transects were surveyed with a 5 m inter-transect region between the end of Transect 1 and the start of Transect 2. The LPI diver determines the benthic composition at 20 cm intervals for a total of 125 data points per transect. All living benthic elements (e.g., coral, algae, and other invertebrates) were identified to the lowest taxonomic level possible, often substituting functional group categories for turf algae and crustose coralline algae when identification in the field was extremely difficult. In cases where the substrate is bare or covered with turf algae, the substrate composition is also noted as either sand, rock, rubble, carbonate pavement, or dead coral. The data allows for the assessment and monitoring of species composition and abundance and provide the basis for computing quantitative estimates of percent cover at higher taxonomic levels like functional group (live coral, macroalgae, turf algae) or on a finer taxonomic resolution such as genus level.


Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

Datum vydání před více než 9 roky

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Popis

Data were jointly collected by University of British Columbia and Fisheries Research Board of Canada, Pacific Oceanographic Group, Nanaimo, British Columbia, Canada. Water depth and other data were collected from EHKOLI between October 2, 1951 and October 24, 1952. Bottle, secchi disk and meteorological sensors were used to collect these physical profile data.


Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

Datum vydání před více než 9 roky

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Co poskytovatel nabízí?
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Popis

The NOAA Atlantic Real-Time Ocean Forecast System (RTOFS) dataset comprises output fields from the daily operational RTOFS model runs conducted at the National Centers for Atmospheric Prediction. Each model run produces a series of gridded fields containing results of model computations for ocean temperature, salinity, currents, sea-surface height, and possibly other properties. The fields are encoded in the standard GRIdded Binary (GRIB) file format. NODC compiles a series of files into monthly accessions to facilitate archival storage and public access. Two different sets of output fields are included: 1) daily 3-dimensional fields reported on the model's native hybrid (isopycnal plus z-level) vertical coordinates (note: prior to June 6, 2007, these fields are interpolated to z-levels); and 2) hourly fields reported for the surface level only. Each daily model run produces a 24-hr hindcast as well as forecasts out to 120 hours.


Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

Datum vydání před více než 9 roky

US
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Co poskytovatel nabízí?
ongoing release of a series of related datasets

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Popis

The National Oceanic and Atmospheric Administration (NOAA) has the statutory mandate to collect hydrographic data in support of nautical chart compilation for safe navigation and to provide background data for engineers, scientific, and other commercial and industrial activities. Hydrographic survey data primarily consist of water depths, but may also include features (e.g. rocks, wrecks), navigation aids, shoreline identification, and bottom type information. NOAA is responsible for archiving and distributing the source data as described in this metadata record.


Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

Datum vydání před více než 9 roky

US
beta

Shrnutí

Co poskytovatel nabízí?
ongoing release of a series of related datasets

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Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

Datum vydání před více než 9 roky

US
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Co poskytovatel nabízí?
a one-off release of a set of related datasets

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Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

Datum vydání před více než 9 roky

US
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Co poskytovatel nabízí?
ongoing release of a series of related datasets

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Shrnutí

Co poskytovatel nabízí?
ongoing release of a series of related datasets

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Popis

The U.S. National Oceanographic Data Center (NODC) operates the Global Argo Data Repository (GADR) as the long-term archive for the International Global Argo Project (for additional information about Argo, see http://www.argo.ucsd.edu/ (last accessed August 2004)). Argo data archived by the US NODC on a weekly basis starting the second quarter of FY 2003, may include real-time and/or delayed-mode profiles of ocean temperature and salinity, as well as related conductivity and/or pressure measurements (if any), collected by Argo profiling floats.


Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

Datum vydání před více než 9 roky

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Co poskytovatel nabízí?
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Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

Datum vydání před více než 9 roky

US
beta

Shrnutí

Co poskytovatel nabízí?
ongoing release of a series of related datasets

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Popis

The National Oceanic and Atmospheric Administration (NOAA) has the statutory mandate to collect hydrographic data in support of nautical chart compilation for safe navigation and to provide background data for engineers, scientific, and other commercial and industrial activities. Hydrographic survey data primarily consist of water depths, but may also include features (e.g. rocks, wrecks), navigation aids, shoreline identification, and bottom type information. NOAA is responsible for archiving and distributing the source data as described in this metadata record.



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Co poskytovatel nabízí?
ongoing release of a series of related datasets

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These data represent data collected from the Shipboard Environmental (data) Acquisition System (SEAS), a program developed by National Oceanic and Atmospheric Administration (NOAA) to provide accurate meteorological and oceanographic data in real time from ships at sea through the use of satellite data transmission techniques. The system transmits data through either the Geostationary Operational Environmental Satellite (GOES) or the International Maritime Satellite Organization (INMARSAT C) satellites to NOAA for use in weather, climatological and ocean models. NOAA is actively participating in an international effort to increase the number of subsurface temperature observations in support of global oceanographic and climate studies. NOAA's Expendable Bathythermograph (XBT) program, SEAS, currently supports about 80 Voluntary Observing Ships (VOS). SEAS XBT data are archived by the National Oceanographic Data Center (NODC) on a weekly basis.


Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

Datum vydání před více než 9 roky

US
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Shrnutí

Co poskytovatel nabízí?
ongoing release of a series of related datasets

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Popis

The National Oceanic and Atmospheric Administration (NOAA) has the statutory mandate to collect hydrographic data in support of nautical chart compilation for safe navigation and to provide background data for engineers, scientific, and other commercial and industrial activities. Hydrographic survey data primarily consist of water depths, but may also include features (e.g. rocks, wrecks), navigation aids, shoreline identification, and bottom type information. NOAA is responsible for archiving and distributing the source data as described in this metadata record.



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Co poskytovatel nabízí?
ongoing release of a series of related datasets

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The Integrated Science Data Management (ISDM) office processes oceanographic profiles reported for the world oceans in near real-time from the Global Telecommunications System (GTS) for the Global Temperature and Salinity Profile Program (GTSPP). These data also support the activities of the Ship-of-Opportunity Programme Implementation Panel (SOOPIP) and the WOCE Upper Ocean Thermal Program (WOCE UOT).



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Co poskytovatel nabízí?
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Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

Datum vydání před více než 9 roky

US
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Co poskytovatel nabízí?
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Co poskytovatel nabízí?
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Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

Datum vydání před více než 9 roky

US
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Co poskytovatel nabízí?
ongoing release of a series of related datasets

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Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

Datum vydání před více než 9 roky

US
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Co poskytovatel nabízí?
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Popis

The project consisted of a nearshore fish, invertebrate, and habitat survey in northern Bristol Bay, Alaska. A 32-ft. gillnet vessel, the F/V Willow was chartered for the survey, and we also used a 20-ft. aluminum skiff with 90-hp. motor for shallow water work. The survey was staged out of Dillingham, Alaska and took place from July 26-August 8, 2009.The main gear types used during the survey were a beach seine and a bottom beam trawl. A surface pair trawl (towed by the vessel and the skiff) was deployed in one location. Using these gear types, we sampled from the shoreline to 17 m depth, as well as surface waters ~1 km from the shoreline. Catches were sorted to species, enumerated, and when possible weighed using spring scales. Length measurements were taken for most species. Voucher specimens were preserved in 10% formalin for confirmation of species identification. A small number of samples were frozen for age and energetics analysis . Photographs were taken of most species. Small, datalogging conductivity-temperature-depth recorders (CTDs) were deployed on the trawl gear, and also placed on temporary moorings in several locations to study fluctuations in temperature and salinity over tidal cycles. We also recorded habitat variables at beach seine sites according to the methodology used in the Nearshore Fish Atlas of Alaska. During July 26-August 1, 2009 sampling was conducted in Nushagak Bay. High wind and waves hampered the sampling throughout this entire week and largely determined possible sampling locations. Two days were completely lost due to weather. On August 3 we traveled from Dillingham to the west side of the Nushagak and from August 4-8 sampling was conducted along the Nushagak Peninsula and in Kulukak, Nunavachak, Ungalikthluk, and Togiak Bays. During most of this time we experienced high winds but they did not hamper the sampling to the same degree as in the Nushagak. On August 8 we traveled back to Dillingham.


Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

Datum vydání před více než 9 roky

US
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Shrnutí

Co poskytovatel nabízí?
ongoing release of a series of related datasets

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Popis

The National Oceanic and Atmospheric Administration (NOAA) has the statutory mandate to collect hydrographic data in support of nautical chart compilation for safe navigation and to provide background data for engineers, scientific, and other commercial and industrial activities. Hydrographic survey data primarily consist of water depths, but may also include features (e.g. rocks, wrecks), navigation aids, shoreline identification, and bottom type information. NOAA is responsible for archiving and distributing the source data as described in this metadata record.



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Co poskytovatel nabízí?
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Popis

This data set is part of a larger set of data called the MultiBeam Bathymetric Data Base (MBBDB) where other similar data can be found at http://maps.ngdc.noaa.gov/viewers/multibeam/



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Co poskytovatel nabízí?
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Co poskytovatel nabízí?
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Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

Datum vydání před více než 9 roky

US
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Co poskytovatel nabízí?
ongoing release of a series of related datasets

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Popis

Habitat maps of the main Hawaiian Islands were created by visual interpretation of aerial photos and hyperspectral imagery using the Habitat Digitizer extension. Aerial photographs are valuable tools for natural resource managers and researchers since they provide an excellent record of the location and extent of habitats. However, spatial distortions in aerial photographs due to such factors as camera angle, lens characteristics, and relief displacement must be accounted for during analysis to prevent incorrect measurements of area, distance, and other spatial parameters. These distortions of scale within an image can be removed through orthorectification. During orthorectification, digital scans of aerial photos are subjected to algorithms that eliminate each source of spatial distortion. The result is a georeferenced digital mosaic of several photographs with uniform scale throughout the mosaic. Features near land are generally georeferenced with greater accuracy while the accuracy of features away from land is generally not as good. Where no land is in the original photographic frame only kinematic GPS locations and image tie points were used to georeference the images. After an orthorectified mosaic is created, photointerpreters can accurately and reliably delineate boundaries of features in the imagery as they appear on the computer monitor using a software interface such as the Habitat Digitizer.



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Co poskytovatel nabízí?
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Popis

The Integrated Science Data Management (ISDM) office processes oceanographic profiles reported for the world oceans in near real-time from the Global Telecommunications System (GTS) for the Global Temperature and Salinity Profile Program (GTSPP). These data also support the activities of the Ship of Opportunity Programme Implementation Panel (SOOPIP)and the WOCE Upper Ocean Thermal Program (WOCE UOT). The ISDM sends a copy of these data to the US NODC three times each week.