데이터셋 상세
미국
Acoustics Research
Fisheries acoustics data are collected from more than 200 sea-days each year aboard the FRV DELAWARE II and FRV ALBATROSS IV (decommissioned) and the FSV Henry B. Bigelow during pelagic, bottom-trawl, and marine mammal surveys. Acoustic sampling operations include continuous measurements using hull-mounted transducers and multi-frequency scientific echosounders. Biological sampling with midwater and bottom trawls, and underwater video deployments is conducted to verify species-specific backscatter and characterize sea-floor habitat. In-situ and laboratory experiments aid in understanding species-specific acoustic measurements. We are continuously developing, testing, and evaluating advanced sampling technologies during laboratory and field experiments to improve abundance estimates and map spatial and temporal distributions of fish and invertebrates. Acoustic, optic, and biological data are audited and archived in the NEFSC relational data management system.
데이터 정보
연관 데이터
['EK80 Water Column Sonar Data Collected During PC2303L4b']
공공데이터포털
Operations focused on continental shelf and shelf-break waters between the NC-VA border and St. Lucie Inlet, Florida, between 18-200 m deep. Leg 1 consisted entirely of sonar mapping during the ship's northward transit, beginning at St. Lucie Inlet, FL. On legs 2 and 3, we deploy traps with attached video cameras at a variety of stations in the U.S. South Atlantic. Traps have a single line connected to two surface buoys. On legs 2 and 3, vessel operations will occur over a 24-hour workday. Trapping, video, hook-and-line sampling, and CTD operations occured from approximately 0700 to approximately 1900 each day. The time between 1900 and 0700 each day was used for transit to the next day’s sampling stations, multibeam sonar mapping, or for hook-and-line sampling. The calibrated EK-80 was continuously ran to collect acoustics data for fish during trap deployment and retrieval. The FPC supplied the ship with GPS points of most trap/video sampling locations, and trap sampling commenced at approximately 0700 each morning. Six traps were deployed off the stern of Pisces (down the stern ramp while the vessel is traveling at approximately 4.5 kt) over the course of approximately 20 min, one trap being deployed at a time and no closer than 200 m from another trap. After a group of six traps are deployed in an area, a single CTD cast was conducted, and then traps were retrieved after each trap has soaked for approximately 90 min (but no more than 150 min). Note: Plan for Leg 3 was to last August 28-September 8, 2023 (12 DAS); instead of returning to Morehead City, NC, the Pisces pulled in to Norfolk, VA on August 30 due to mechanical issues and to avoid hurricanes Franklin and Idalia. One set of traps was successfully deployed and recovered (and one CTD cast performed) during Leg 3, and multibeam bathymetry data were acquired with the Kongsberg EM2040 on both days of Leg 3. The Pisces departed Norfolk, VA on September 11 for Leg 4 and pulled back in to Norfolk on September 22 to avoid a storm ("Leg 4a"). The Pisces departed Norfolk again to continue Leg 4 on September 25 and returned to Norfolk on September 29 ("Leg 4b").
EK500 Water Column Sonar Data Collected During MF0309
공공데이터포털
Acoustic-Trawl Survey of Walleye Pollock in the Gulf of Alaska (MF0309, EK500). The Midwater Assessment and Conservation Engineering (MACE) program of NOAA National Marine Fisheries Service (NMFS), Alaska Fisheries Science Center (AFSC) conducted an acoustic-trawl (AT) stock assessment survey in the Gulf of Alaska during late spring/early summer of 2003 to estimate the distribution and abundance of walleye pollock (Theragra chalcogramma). The survey was conducted along the Gulf of Alaska (GOA) shelf and shelfbreak from the Shumagin Islands to Prince William Sound, 4 June to 16 July 2003, aboard NOAA Ship Miller Freeman, a 66 meter stern trawler equipped with acoustic and oceanographic instrumentation. The vessel departed Kodiak, Alaska on 4 June and arrived in Kodiak on 16 July. The echosounder system was calibrated at the start of the cruise in Three Saints Bay, Kodiak Island, Alaska on 5 June, and at the end of the cruise in Ugak Bay, Kodiak Island, Alaska, 16 July 2003.
['EK80 Water Column Sonar Data Collected During PC2303L1']
공공데이터포털
Operations focused on continental shelf and shelf-break waters between the NC-VA border and St. Lucie Inlet, Florida, between 18-200 m deep. Leg 1 consisted entirely of sonar mapping during the ship's northward transit, beginning at St. Lucie Inlet, FL. CTD (SBE911) casts and SonTek CastAway casts were conducted at the beginning of mapping operations and at least every 4 hours for sound velocity data. Sound velocity profiles were applied to the Kongsberg EM2040 during mapping operations and were also applied to the multibeam data in post-processing with CARIS.
EK60 Water Column Sonar Data Collected During FK140216
공공데이터포털
Kona Integrated Ecosystem Assessment Survey (FK140216, EK60). The cruise accomplished the following objectives: marine mammal observations from both the R/V Falkor and the rigid hull inflatable boat along four transects. Collection of photographs from each marine mammal sighting for further identification and individual tracking. Eight EK60 acoustic transects were completed encompassing day and night variation. Nine DIDSON with an attach CTD casts were done along with five additional CTD only casts at specified stations.
EM710 Water Column Sonar Data Collected During SKQ201503T
공공데이터포털
Sikuliaq Homecoming (SKQ201503T, EM710)
EK60 Water Column Sonar Data Collected During NF-14-04
공공데이터포털
NF-14-04 Mapping Essential Fish Habitat in the Southeast US (EM122). Mapping Essential Fish Habitat in the Southeast US to Support Offshore Energy Spatial Planning and Ecosystem Management
EK60 Water Column Sonar Data Collected During AL0409
공공데이터포털
NEFSC 2004 Fall Bottom Trawl Survey (AL0409, EK500). The NEFSC bottom trawl survey is a fisheries independent, multi-species survey that provides the primary scientific data for fisheries assessments in the U.S. mid-Atlantic and New England regions. Two bottom trawl surveys are conducted each year, one in the spring and one in the autumn. The survey is a standardized, stratified random design, with stratification based on bathymetry and multiple trawl sites within each stratum. Trawl sites are selected randomly, but the overall ship path is south to north. The survey covers the continental shelf and U.S. exclusive economic zone (EEZ) from Cape Hatteras, North Carolina into the Canadian EEZ. The primary gear is a bottom trawl, with CTD, multifrequency echosounder, and a host of other scientific sensor data collected ancillary to the bottom trawl catches.
EM710 Water Column Sonar Data Collected During FK191005
공공데이터포털
Falkor Cruise FK191005 (EM710)
EK500 Water Column Sonar Data Collected During AL0006
공공데이터포털
NEFSC 2000 Fall Bottom Trawl Survey (Al0006, EK500). The NEFSC bottom trawl survey is a fisheries independent, multi-species survey that provides the primary scientific data for fisheries assessments in the U.S. mid-Atlantic and New England regions. Two bottom trawl surveys are conducted each year, one in the spring and one in the autumn. The survey is a standardized, stratified random design, with stratification based on bathymetry and multiple trawl sites within each stratum. Trawl sites are selected randomly, but the overall ship path is south to north. The survey covers the continental shelf and U.S. exclusive economic zone (EEZ) from Cape Hatteras, North Carolina into the Canadian EEZ. The primary gear is a bottom trawl, with CTD, multifrequency echosounder, and a host of other scientific sensor data collected ancillary to the bottom trawl catches.
EM710 Water Column Sonar Data Collected During NF2101
공공데이터포털
이 데이터셋의 설명이 없습니다