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Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

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Popis

Towed-diver surveys (aka. Towboard surveys) are conducted by the Coral Reef Ecosystem Division (CRED) of the NOAA Pacific Islands Fisheries Science Center (PIFSC) as part of biennial Pacific Reef Assessment and Monitoring Program (RAMP) Cruises. These cruises support NOAA Coral Reef Conservation Program (CRCP) long-term goals for sustainable management and conservation of coral reef ecosystems. 13 towboard surveys (26.7509 km in length), were conducted at Maro Reef in the NW Hawaiian Islands from 1 September - 4 October 2006 as part of RAMP Cruise HI0611. Towboard surveys are a good method for obtaining a general description of large reef areas, assessing the status of low-density populations of large-bodied reef fish, large-scale disturbances (e.g., bleaching), general distribution and abundance patterns of macro-invertebrates (e.g., COT, giant clams), and for assessing trends in these populations and metrics. A pair of scuba divers (1 fish and 1 benthic diver) are towed 60 m behind a small survey launch at a speed of 1-2 knots and a depth of approximately 15m. Each survey is 50 min long, covers about 2 km of habitat, and is divided into ten 5-minute survey segments. The fish diver records, to the lowest possible taxon, all large-bodied reef fishes (>50cmTL) seen within 5m either side and 10m in front of the towboard. Length of each individual is estimated to the nearest cm. The fish towboard is also outfitted with a forward-facing digital video camera to record the survey swath. The benthic diver records percent cover of coral and macroalgae, estimates benthic habitat type and complexity, and censuses a suite of benthic macroinvertebrates including Crown of Thorns sea stars and sea urchins. The benthic towboard is equipped with a downward-facing digital still camera which images the benthos at 15 second intervals. These images are analyzed for percent cover of coral, algae, and other benthic components. Both towboards are equipped with SEABIRD SBE-39 temperature/depth sensors set to record at 5 second intervals. Latitude and longitude of each survey track is recorded at 15 second intervals using a Global Positioning System (GPS) receiver onboard the tow boat. A layback algorithm is applied to more accurately map the position of the divers with respect to the reef environment. This algorithm calculates the position of the divers based on the position of the tow boat taking into account the length of the tow rope, the depth of the divers, and the curvature of the survey track. This metadata applies to the fish biomass observations.


Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

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Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

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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

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

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Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

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Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

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

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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

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Co poskytovatel nabízí?
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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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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/


Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

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Co poskytovatel nabízí?
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Popis

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.



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This data contains information specifically for the Arctic Nearshore Impact Monitoring in the Development Area (ANIMIDA 1999 - 2002) and continuation of Arctic Nearshore Impact Monitoring in the Development Area (cANIMIDA 2004 - 2007) programs in the Alaskan Beaufort Sea. Minerals Management Service (MMS) initiated these studies to characterize the pre and post construction environmental impacts surrounding the offshore oil development and production activities in this area. The data encompasses the following areas from 1999 thru 2007: 1) Hydrocarbon and Metal characterization of sediments. Sediments were collected and analyzed for a variety of parameters including Organics (PAH, SHC, and S/T), Grain size, TOC, trace metals and radionuclides (Pb210 and Cs137). 2) Sources, Concentrations and dispersion pathways for suspended sediment and 3) Partitioning of potential contaminants between dissolved and particulate phases. These two tasks focused on suspended sediments and the dissolved / particulates in the water column in fresh and salt water and ice cores. The study analyzed for both chemical and physical parameters that included insitu CTD measurements, POC, DOC, trace and major metals. 4) Biomonitoring and bioaccumulation of contaminants in biota. The biota studied included amphipods, isopods, clams, fish, mussels and SPMD. These tissues were analyzed for metals, PAH, PAH exposure biomarkers (cytochrome P450 1A (CYP1a) and bile fluorescent aromatic compounds (FAC)). 5) Monitoring the Boulder patch area. This area of the program studied the benthic community and kelp biomass. Parameters of interest included: PAR, light attenuation, TSS, kelp productivity and biomass and benthic faunal diversity. Additional analysis for water column chlorophyll, nutrients and CTD parameters were also conducted.


Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

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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

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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

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Co poskytovatel nabízí?
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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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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 December 2007)). 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

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This profile data aboard the F/V Ocean Explorer in the Arctic Ocean and Beaufort Sea from August 6, 2008 to August 22, 2008 was supported by the Minerals Management Service. It is a collaborative effort with University of Alaska - Fairbanks investigators working with NOAA-NMFS-AFSC and the University of Washington. The data set included in this submission is the physical oceanography portion of the Beaufort Sea Fish Monitoring program. This submission contains only CTD data. The program is for an assessment of marine fish resources in the Alaskan Beaufort Sea. It also addresses the following NOAA mission goals: 1. Protect, restore, and manage the use of coastal and ocean resources through an ecosystem approach to management. 2. Understand climate variability and change to enhance society's ability to plan and respond. This survey represents the first comprehensive fisheries survey of the Alaskan Beaufort Sea conducted in more that 20 years. 3. Support the nation's commerce with information for safe, efficient, and environmentally sound transportation. If offshore oil development proceeds in this area, it is likely that produced oil will be transported onshore by underwater pipelines.


Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

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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

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

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Vydavatel National Oceanic and Atmospheric Administration, Department of Commerce

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The project area is composed of 16 counties in the State of South Carolina - Cherokee, Union, Laurens, Greenwood, Newberry, Chester, Fairfield, Lancaster, Chesterfield, Marlboro, Darlington, Dillon, Marion, Williamsburg, Clarendon, and Orangeburg. This metadata file is for the lidar county deliverables for Dillon County, SC. The project area consists of approximately 10,194 square miles including a buffer of 50 feet along the edges of the project area and an additional buffer in some areas. The project design of the lidar data acquisition was developed to support a nominal post spacing of 1.4 meters. The Fugro EarthData, Inc. acquisition team of Fugro Horizons, Inc. and North West Group acquired 721 flight lines in 44 lifts from January 15, 2008 through February 10, 2008. The data was divided into 5000' by 5000' foot cells that serve as the tiling scheme. Lidar data collection was performed with a Cessna 310 aircraft, utilizing a Leica ALS50-II MPiA sensor, collecting multiple return x, y, and z data as well as intensity data. Lidar data was processed to achieve a bare ground surface (Classes 2 and 8). Lidar data is remotely sensed high-resolution elevation data collected by an airborne collection platform. Using a combination of laser range finding, GPS positioning and inertial measurement technologies, lidar instruments are able to make highly detailed Digital Elevation Models (DEMs) of the earth's terrain, man-made structures, and vegetation.