Subset of the Alaska observer groundfish data, aggregating by 400km square cells and eliminating cells with less than three vessels to create a public version of the Alaska groundfish observer data.
Purpose:
Allows visitors use of the aggregated observer data to create maps. These maps are designed to provide a better understanding of where groundfish are caught in the Aleutian Islands, Bering Sea and Gulf of Alaska.
Access_Constraints: For scientific, management, and regulation compliance purposes, all data collected by observers are confidential under the Magnuson-Stevens Fishery Conservation and Management Act; as amended, Public Law 109-479; 16 U.S.C. 1853; implemented at 50 CFR 679.50. Therefore unprocessed (raw) data can be shared only with authorized persons; however aggregated forms of the data are generally available.
Use_Constraints:
The user must adhere to restrictions placed on publication of data by the Magnuson-Stevens Act as amended in 2006.
Contact_Organization: National Oceanic and Atmospheric Administration (NOAA) Alaska Fisheries Science Center (AFSC) Fisheries Monitoring and Analysis (FMA)
When a vessel's haul is sampled, the species sample weght is expanded to show a whole haul weight of that species. The sample is not always representative of the whole haul. Minor species are particularly prone to misrepresentation due to the limited size of the samples.
Logical_Consistency_Report:
Once received by FMA, these data are extensively checked for quality and are then entered onto a relational Oracle database.
Completeness_Report:
Not all fishing vessels have an observer on board. Not all hauls/sets on observed vessels are sampled. Some observer data is considered confidential. Cells representing less than three vessels in a particular year and gear are not included.
Subset of Alaska observer groundfish species composition data aggregated by 400sqkm cell to create publicly accessible data. Working table of data for last webpage update. Once next data run this data is moved to history table. michael.a.moon@noaa.gov. 20210602
Entity_Type_Definition_Source:
AFSC
Attribute:
Attribute_Label: OBSDATA_SEQ
Attribute_Definition:
Primary key for fmap_obsdata table.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: LAT400SQKM
Attribute_Definition:
Center latitude of a 400sqkm cell the contains the retrieval haul locations.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: LON400SQKM
Attribute_Definition:
Center longitude of a 400sqkm cell the contains the retrieval haul locations.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: GEAR
Attribute_Definition:
Gear type NPT = nonpelagic trawl, PTR = pelagic trawl, LGL = longline, POT = pot.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: YEAR
Attribute_Definition:
Year is extracted from the haul rettrv_date_time field.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: KG
Attribute_Definition:
Weight in kilograms of a species extrapolated to the haul. This algorithm differs by gear type.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: RATE
Attribute_Definition:
Species catch as a percent of sampled hauls for that year and gear.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: SPECIES
Attribute_Definition:
Common Name for a species imported from Norpac
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: SID
Attribute_Definition:
Unique identifier for a species imported from Norpac
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: INSERT_DATE
Attribute_Definition:
Date record was inserted into table..
Attribute_Definition_Source:
AFSC
Detailed_Description:
Entity_Type:
Entity_Type_Label: FMAP_OBSEFFORT
Entity_Type_Definition:
Subset of Alaska observer groundfish haul data aggregated by 400sqkm cell to create publicly accessible data.
Entity_Type_Definition_Source:
AFSC
Attribute:
Attribute_Label: OBSEFFORT_SEQ
Attribute_Definition:
Primary key.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: LAT400SQKM
Attribute_Definition:
Center latitude of a 400sqkm cell the contains the retrieval haul locations.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: LON400SQKM
Attribute_Definition:
Center longitude of a 400sqkm cell the contains the retrieval haul locations.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: GEAR
Attribute_Definition:
Gear type NPT = nonpelagic trawl, PTR = pelagic trawl, LGL = longline, POT = pot.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: YEAR
Attribute_Definition:
Year is extracted from the haul rettrv_date_time field.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: SAMOTC
Attribute_Definition:
Official total catch in mt for sampled hauls only -see OBSOTC.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: SAMHAULCT
Attribute_Definition:
Number of sampled hauls.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: OBSOTC
Attribute_Definition:
Total catch weight as estimated by the observer in kgs and converted to MT for this presentation.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: OBSHAULCT
Attribute_Definition:
Number of hauls including sampled and unsampled hauls.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: INSERT_DATE
Attribute_Definition:
Date record was inserted into table.
Attribute_Definition_Source:
AFSC
Detailed_Description:
Entity_Type:
Entity_Type_Label: FMAP_OBSEXTENT
Entity_Type_Definition:
Used in FMA public webpage update. Subset of fmap_obsdata with only lat and long sq km and species id. michael.a.moon@noaa.gov. 20210602
Entity_Type_Definition_Source:
AFSC
Attribute:
Attribute_Label: OBSEXTENT_SEQ
Attribute_Definition:
Primary key.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: LAT400SQKM
Attribute_Definition:
Center latitude of a 400sqkm cell the contains the retrieval haul locations.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: LON400SQKM
Attribute_Definition:
Center longitude of a 400sqkm cell the contains the retrieval haul locations.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: SID
Attribute_Definition:
Coorseponds to atl_lov_norpac.species_code
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: INSERT_DATE
Attribute_Definition:
Date record was inserted into table
Attribute_Definition_Source:
AFSC
Detailed_Description:
Entity_Type:
Entity_Type_Label: FMAP_OBSSTACK
Entity_Type_Definition:
Rank, bottom 90 or top 10 by species for Subset of Alaska observer groundfish haul data aggregated by 400sqkm cell to create publicly accessible data.
Entity_Type_Definition_Source:
AFSC
Attribute:
Attribute_Label: OBSSTACK_SEQ
Attribute_Definition:
Primary key.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: LAT400SQKM
Attribute_Definition:
Center latitude of a 400sqkm cell the contains the retrieval haul locations.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: LON400SQKM
Attribute_Definition:
Center longitude of a 400sqkm cell the contains the retrieval haul locations.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: GEAR
Attribute_Definition:
Gear type NPT = nonpelagic trawl, PTR = pelagic trawl, LGL = longline, POT = pot.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: YEAR
Attribute_Definition:
Year is extracted from the haul rettrv_date_time field.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: KG
Attribute_Definition:
Sum of the weight of species in 400sqkm area.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: RATE
Attribute_Definition:
Ratio of species kg to total kg.
Attribute_Definition_Source:
AFSC
Attribute:
Attribute_Label: RANK
Attribute_Definition:
quartile < 10 then BOT90 when quartile = 10 then TOP10.
Contact_Organization: National Oceanic and Atmospheric Administration (NOAA) Alaska Fisheries Science Center (AFSC) Fisheries Monitoring and Analysis (FMA)