26654 Acoustics Research Data Set Published / External 23134 Fisheries Acoustic Research Program Project Completed 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. The Fisheries Acoustic Research Program Advanced Sampling Technologies Research Group (ASTRG) implements state-of-the-art fisheries acoustic technologies to provide cost-effective and accurate fisheries-independent population estimates of commercially important pelagic fish stocks in the Northwest Atlantic. Theme acoustic sampling Theme advanced sampling technologies Theme biological sampling Theme echosounders Theme fisheries-independent Theme optic sampling Theme plantkton sampling Theme population estimates Theme underwater video deployments Spatial Georges Bank Spatial Gulf of Maine Spatial Jeffreys Ledge Spatial Northwest Atlantic Stratum midwater trawls Stratum pelagic species Northeast Fisheries Science Center Woods Hole MA USA Data Set Oracle Database As Needed Table (digital) For each deployment within a cruise, the following data are captured: cruise id, transect number, date/time, type of transect, gear deployed, start/end latitude and longitude, start/end EK vessel logs, horizontal resolution of the Sa data, the vertical layer of the water column, the lower/upper depths of the water column layer, volume back-scatter, minimum Sv threshold applied to the data, code for species caught, acoustical integrated energy for a specific species, EK transceiver frequency, CTD cast information, the Sa value for the layer and ESDU interval scaled to nautical miles squared. NOAA/NEFSC/FEMAD/ESB midwater net, EKV, CTD NOAA Ships: FRV Pisces and FRV Henry B Bigelow Echosounders, midwater trawls 56966 BI500_Data Published / External Completed High volume echo data file. Three data blocks are written into this file every ping; the pelagic echogram block, the bottom echogram block, and the echotrace block. PelagicData Text No No Active Copied from the received EK500 echogram (Ql, Q2, Q3) telegrams. Both data blocks are arrays of volume backscattering strength coefficients. The coefficients are stored in the EK500 dB format. BottomData Text No No Active Copied from the received EK500 echogram (Ql, Q2, Q3) telegrams. Both data blocks are arrays of volume backscattering strength coefficients. The coefficients are stored in the EK500 dB format. TargetDepth Float No No Active Target depth in meter. CompTS Float No No Active Estimated target strength in dB with and without transducer pattern compensation. UncompTS Float No No Active Estimated target strength in dB with and without transducer pattern compensation. Alongship Float No No Active Target directional angles in degrees Athwartship Float No No Active Target directional angles in degrees 56967 BI500_Info Published / External Completed Contains general information describing the file set; start/stop times, start/stop positions etc. Release Long No No Active Release Nation Long No No Active The nation and ship code parameter are copied from the Reference table. Ship Long No No Active The nation and ship code parameter are copied from the Reference table. Survey Long No No Active The survey code parameter is copied from the Settings table. Frequency Long No No Active Echosounder operating frequency and transceiver channel number are extracted from the received EK500 telegrams. Transceiver Long No No Active Echosounder operating frequency and transceiver channel number are extracted from the received EK500 telegrams. StartDate Long No No Active These parameters define the start/stop endpoints of the current file set. See the Observation table. StartTime Long No No Active These parameters define the start/stop endpoints of the current file set. See the Observation table. StartLatitude Float No No Active These parameters define the start/stop endpoints of the current file set. See the Observation table. StartLongitude Float No No Active These parameters define the start/stop endpoints of the current file set. See the Observation table. StartDistance Float No No Active These parameters define the start/stop endpoints of the current file set. See the Observation table. StopDate Long No No Active These parameters define the start/stop endpoints of the current file set. See the Observation table. StopTime Long No No Active These parameters define the start/stop endpoints of the current file set. See the Observation table. StopLatitude Float No No Active These parameters define the start/stop endpoints of the current file set. See the Observation table. StopLongitude Float No No Active These parameters define the start/stop endpoints of the current file set. See the Observation table. StopDistance Float No No Active These parameters define the start/stop endpoints of the current file set. See the Observation table. 56968 BI500_Ping Published / External Completed Ping based index file. Index pointers to the three data blocks in the Data file are written into the Ping file every ping. Date Long No No Active Date and time of the ping. See the Observation table. Time Long No No Active Date and time of the ping. See the Observation table. Distance Float No No Active Current vessel log distance, current geographical position and current bottom depth. Latitude Float No No Active Current vessel log distance, current geographical position and current bottom depth. Longitude Float No No Active Current vessel log distance, current geographical position and current bottom depth. BottomDepth Float No No Active Current vessel log distance, current geographical position and current bottom depth. EchogramType Long No No Active This parameter identifies the echogram data type: 0 = volume backscattering strength, 1 = 1 target strength, 2 = 2 surface backscattering strength PelagicUpper Float No No Active Parameters characterizing the pelagic echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the sea surface, positive values below the surface. PelagicLower Float No No Active Parameters characterizing the pelagic echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the sea surface, positive values below the surface. PelagicCount Long No No Active Parameters characterizing the pelagic echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the sea surface, positive values below the surface. PelagicOffset Long No No Active Parameters characterizing the pelagic echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the sea surface, positive values below the surface. BottomUpper Float No No Active Parameters characterizing the bottom echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the detected bottom, positive values above the bottom. BottomLower Float No No Active Parameters characterizing the bottom echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the detected bottom, positive values above the bottom. BottomCount Long No No Active Parameters characterizing the bottom echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the detected bottom, positive values above the bottom. BottomOffset Long No No Active Parameters characterizing the bottom echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the detected bottom, positive values above the bottom. EchotraceCount Long No No Active Parameters characterizing the echotrace block; number of echotraces, data block start address in bytes within the Data file. EchotraceOffset Long No No Active Parameters characterizing the echotrace block; number of echotraces, data block start address in bytes within the Data file. 56969 BI500_Vlog Published / External Completed Log based index file. Index pointers to the three most recent data blocks in the Data file are written into the Vlog file every time a vessel log (VL) telegram arrives from the EK500. Date Long No No Active Date and time of the ping. See the Observation table. Time Long No No Active Date and time of the ping. See the Observation table. Distance Float No No Active Current vessel log distance, current geographical position and current bottom depth. Latitude Float No No Active Current vessel log distance, current geographical position and current bottom depth. Longitude Float No No Active Current vessel log distance, current geographical position and current bottom depth. BottomDepth Float No No Active Current vessel log distance, current geographical position and current bottom depth. EchogramType Long No No Active This parameter identifies the echogram data type: 0 = volume backscattering strength, 1 = 1 target strength, 2 = 2 surface backscattering strength PelagicUpper Float No No Active Parameters characterizing the pelagic echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the sea surface, positive values below the surface. PelagicLower Float No No Active Parameters characterizing the pelagic echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the sea surface, positive values below the surface. PelagicCount Long No No Active Parameters characterizing the pelagic echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the sea surface, positive values below the surface. PelagicOffset Long No No Active Parameters characterizing the pelagic echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the sea surface, positive values below the surface. BottomUpper Float No No Active Parameters characterizing the bottom echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the detected bottom, positive values above the bottom. BottomLower Float No No Active Parameters characterizing the bottom echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the detected bottom, positive values above the bottom. BottomCount Long No No Active Parameters characterizing the bottom echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the detected bottom, positive values above the bottom. BottomOffset Long No No Active Parameters characterizing the bottom echogram block; upper and lower depth boundary in meter, number of data points, data block start address in bytes within the Data file. The boundaries are referred to the detected bottom, positive values above the bottom. EchotraceCount Long No No Active Parameters characterizing the echotrace block; number of echotraces, data block start address in bytes within the Data file. EchotraceOffset Long No No Active Parameters characterizing the echotrace block; number of echotraces, data block start address in bytes within the Data file. 56970 BI500_Work Published / External Completed Operator decision data file (closing base interval). Not generated by the Log program. File contains operator decision data (species separation lines, school boundaries, bottom contour, active species etc.) and is generated by the Scrutinize program during interactive interpretation. Operator Decision Data Char No No Active Operator Decision Data 56971 BI500_Snap Published / External Completed Operator decision data file (snap shot). Not generated by the Log program. File contains operator decision data (species separation lines, school boundaries, bottom contour, active species etc.) and is generated by the Scrutinize program during interactive interpretation. Operator Decision Data Char No No Active Operator Decision Data 56972 EK60_DataEncapsulation Published / External Completed A standard encapsulation scheme is used for all data files. Each datagram is preceded by a 4 byte length tag stating the datagram length in bytes. An identical length tag is appended at the end of the datagram. Length1 Long No No Active 4 byte length tag stating the datagram length in bytes DatagramType Long No No Active The datagram type field identifies the type of datagram. ASCII quadruples are used to ease human interpretation and long term maintenance; three characters identify the datagram type and one character identifies the version of the datagram. LowDateTime DateTime No No Active Structure contains a 64-bit integer value stating the number of 100 nanosecond intervals since January 1, 1601. This is the internal ”filetime” used by the Windows NT operating system. HighDateTime DateTime No No Active Structure contains a 64-bit integer value stating the number of 100 nanosecond intervals since January 1, 1601. This is the internal ”filetime” used by the Windows NT operating system. datagram content Text No No Active data part of the datagram contains any number of bytes, and its content is highly datagram dependent. Length2 Long No No Active 4 byte length tag stating the datagram length in bytes 56973 EK60_ConfigurationHeader Published / External Completed EK60_ConfigurationHeader SurveyName Char No No Active Survey Name TransectName Char No No Active Transect Name SounderName Char No No Active Sounder Name version Char No No Active version spare Char No No Active spare TransducerCount Long No No Active 1 to 7 56974 EK60_ConfigurationTransducer Published / External Completed EK60 Configuration Transducer ChannelId Char No No Active Channel identification BeamType Long No No Active 0 = Single, 1 = Split Frequency Float No No Active [Hz] Gain Float No No Active [dB] The single gain parameter was used actively in raw data files generated with software version 1.3. This was before PulseLengthTable, GainTable and SaCorrectionTable were introduced in software version 1.4 to enable gain and Sa correction parameters for each pulse duration. EquivalentBeamAngle Float No No Active [dB] BeamWidthAlongship Float No No Active [degree] BeamWidthAthwartship Float No No Active [degree] AngleSensitivityAlongship Float No No Active none AngleSensitivityAthwartship Float No No Active none AngleOffsetAlongship Float No No Active [degree] AngleOffsetAthwartship Float No No Active [degree] PosX Float No No Active future use PosY Float No No Active future use PosZ Float No No Active future use DirX Float No No Active future use DirY Float No No Active future use DirZ Float No No Active future use PulseLengthTable Float No No Active Available pulse lengths for the channel [s] Spare1 Char No No Active future use GainTable Float No No Active Gain for each pulse length in the PulseLengthTable [dB] Spare2 Char No No Active future use SaCorrectionTable Float No No Active Sa correction for each pulse length in the PulseLengthTable [dB] Spare3 Char No No Active none GPTSoftwareVersion Char No No Active none Spare4 Char No No Active none 56975 EK60_NMEA_Datagram Published / External Completed This datagram contains the original NMEA 0183 input message line; carriage return, line feed and a terminating zero included. DatagramHeader Char No No Active none Text Char No No Active none 56976 EK60_Annotation_Datagram Published / External Completed The annotation datagram contains comment text that you have entered ("dangerous wreck"). The text string is zero terminated. The size of the complete datagram depends on the annotation length. The maximum annotation string is 80 characters. DatagramHeader Char No No Active none Text Char No No Active none 56977 EK60_SampleDatagram Published / External Completed The sample datagram contains sample data from just one transducer channel. It can contain power sample data (Mode = 0), or it can contain both power and angle sample data (Mode = 1). Channel Short No No Active Channel number Mode Short No No Active Datatype TransducerDepth Float No No Active [m] Frequency Float No No Active [Hz] TransmitPower Float No No Active [W] PulseLength Float No No Active [s] BandWidth Float No No Active [Hz] SampleInterval Float No No Active [s] SoundVelocity Float No No Active [m/s] AbsorptionCoefficient Float No No Active [dB/m] Heave Float No No Active [m] Tx Roll Float No No Active [deg] Tx Pitch Float No No Active [deg] Temperature Float No No Active [C] Spare 1 Short No No Active none Spare 2 Short No No Active none Rx Roll Float No No Active [deg] Rx Pitch Float No No Active [deg] Offset Long No No Active First sample Count Long No No Active Number of samples Power Short No No Active The power data contained in the sample datagram is compressed. In order to restore the correct value(s), you must decompress the value. Angle Short No No Active The power data contained in the sample datagram is compressed. In order to restore the correct value(s), you must decompress the value. 56978 EK500_Asynchronous telegram Published / External Completed Output telegram Header Char No No Active Two-character header indicating the telegram type. PR = parameter request; PE = parameter enter; CS = comment; GL = navigation data; ST = status telegram; SV = sound velocity telegram Time Char No No Active comma separated fields PR,PE = parameter path and value; CS = comment string, GL = geographical position CRCR ASCII No No Active Two consecutive carriage returns are used as telegram terminator in output telegrams 56979 EK500_Ping-based telegram Published / External Completed Output telegram Header Char No No Active Two-character header indicating the telegram type. D# = detected bottom depth; MS = motion sensor data; E# = echotrace (single fish detections); S# = mean Sy per ping inside each active main layer and the effective thickness of the layer; Q# = echogram data, B# = sample angle data; W# = sample power data; V# = sample Sv data; P# = target strength sample data Time Char No No Active comma separated fields CRCR ASCII No No Active Two consecutive carriage returns are used as telegram terminator in output telegrams 56980 EK500_Log-based telegram Published / External Completed Output telegram Header Char No No Active Two-character header indicating the telegram type. VL = vessel log; LL = layer settings; A# = Integrator output table; H# = TS distribution table; Time Char No No Active comma separated fields CRCR ASCII No No Active Two consecutive carriage returns are used as telegram terminator in output telegrams 56981 EK500_Parameter request telegram Published / External Completed Input telegram Path Char No No Active none 56982 EK500_Parameter enter telegram Published / External Completed Input telegram Path Char No No Active none New parameter value Char No No Active new parameter value, separated by an "=" sign 56983 EK500_Comment string (annotation) telegram Published / External Completed Header Char No No Active two-character header “CS” 56984 EK500_Sound velocity telegram Published / External Completed Input telegram Start character ASCII No No Active Start of text (STX) Message type Binary No No Active none Date ASCII No No Active DD-days, MM-months, YY-years Time ASCII No No Active RH-hours, MM-minutes, SS-seconds, hh-seconds No. of valid values Binary No No Active Determines the number of depth and sound velocity values which are valid in the table, starting from the first pair. Depth Binary No No Active 100 pairs of depth and corresponding sound velocity values Sound velocity Binary No No Active 100 pairs of depth and corresponding sound velocity values End character ASCII No No Active End of text (ETX) Checksum Binary No No Active Arithmetic sum of all bytes in the telegram. This checksum is used by the receiving system to ensure good quality of data telegrams. Telegrams with a faulty cheksum should be disregarded. 56985 EK500_External alarm telegram Published / External Completed Input telegram Header Char No No Active two-character header “AL” External alarm Char No No Active 1: critical alarm, and if # = 2: non-critical alarm. Data Steward 2014 Person Jech, Michael michael.jech@noaa.gov 166 Water Street Woods Hole MA 02543 508-495-2353 508-495-2258 Email Distributor 1998 Organization Northeast Fisheries Science Center NEFSC https://ror.org/02nc0ck44 166 Water Street Woods Hole MA 02543-1026 USA (508)495-2000 https://www.fisheries.noaa.gov/about/northeast-fisheries-science-center NEFSC Home Page Online Resource 8:00 a.m. to 4:30 p.m. Monday - Friday Email Metadata Contact 2018-09 Person Jech, Michael michael.jech@noaa.gov 166 Water Street Woods Hole MA 02543 508-495-2353 508-495-2258 Point of Contact 2014 Person Jech, Michael michael.jech@noaa.gov 166 Water Street Woods Hole MA 02543 508-495-2353 508-495-2258 Email Point of Contact Ground Condition -75 -66 44 38 northwest Atlantic: southern New England, Georges Bank, Gulf of Maine Continuing 1998-08-26 The first station of the first Acoustics cruise took place on 08-26-1998. Unclassified Submit e-mail or web-base request to NCEI There may be constraints due to the timing between the time the data is archived and when it becomes available All the data have doi numbers. It is highly recommended that any use of the data includes citation of the doi. https://www.ngdc.noaa.gov/maps/water_column_sonar/index.html NCEI Water Column Sonar Data (northeast to mid-Atlantic data sets) RDBMS: Oracle Very high Rare. Omissions could occur if a sensor data value is out of range or missing. All instruments are calibrated prior to data collection cruise. Data collection software provides validations. Yes Unknown Yes No 3 months NCEI-CO To be determined Archival of source data preserving unaltered collected data, Scheduled backups, Remote storage backups, Password protection. There exist event log files for source data; a step by step users manual which includes parameter settings on instruments and calibration steps; publications describe how data are post-processed and the perl code which is used in post-processing. 56966 Entity 56967 Entity 56968 Entity 56971 Entity 56969 Entity 56970 Entity 56978 Entity 56983 Entity 56985 Entity 56980 Entity 56982 Entity 56981 Entity 56979 Entity 56984 Entity 56976 Entity 56973 Entity 56974 Entity 56972 Entity 56975 Entity 56977 Entity gov.noaa.nmfs.inport:26654 Nancy McHugh 2015-08-28T13:31:31 SysAdmin InPortAdmin 2026-03-04T19:17:17 2019-07-18 Northeast Fisheries Science Center NEFSC 166 Water Street Woods Hole MA 02543-1026 USA (508)495-2000 https://www.nefsc.noaa.gov 8:00 a.m. to 4:30 p.m. Monday - Friday 1001 Public No No 2019-07-18 1 Year 2020-07-18