Gutierrez Torero, Mariano; Grados, Daniel (2021): 38 kHz water column acoustic data collected in October/November 2001 during survey 01110-11 in the territorial waters of Peru [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.939252
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Published: 2021-12-10 • DOI registered: 2022-10-27
Abstract:
Water column acoustic data collected during the 0110-11 survey by the Peruvian Marine Research Institute, IMARPE. The survey covered the peruvian marine domain, from coast to 120 nautical miles offshore, from 3°43' to 18°20' South latitude, and from 72°18' to 84°23' West longitude. The survey was conducted in between 2001-10-07 and 2001-11-10, and consisted in 76 acoustic transects perpendicular to the coast. This was performed by the RVs Humboldt and Olaya, which worked in parallel using SIMRAD EK500 hull-mounted echosounders. Here we present calibrated processed data at 38 kHz from 10 to 750 m depth. Processing was conducted in Echoview v11.0, and included the following steps: (1) correction for sound speed, absorption, and calibration factors; (2) correction of background noise following De Robertis and Higginbottom (2007); (3) automatic removal of corrupted signal following Ryan et al. (2015); (4) manual removal of persistent corrupted signal, seabed and aliased-seabed; (5) resampling down to 10 m height and 2000 m width resolution. The present submission contains two netCDF files, one for the RV Humboldt and another for the RV Olaya, with data and metadata following the ICES standards for active acoustic systems.
Related to:
De Robertis, Alex; Higginbottom, Ian (2007): A post-processing technique to estimate the signal-to-noise ratio and remove echosounder background noise. ICES Journal of Marine Science, 64(6), 1282-1291, https://doi.org/10.1093/icesjms/fsm112
Gutierrez Torero, Mariano; Peraltilla Neyra, Salvador; Castillo Valderrama, Ramiro; Ganoza Chozo, Francisco; Aliaga Rosales, Aníbal; Herrera Almirón, Naldi; Gaviola, Gabriel; Calderón Martell, Jairo (2004): Acoustic abundance of peruvian marine resources evaluated during the spring 2001. Instituto del Mar del Perú, 32(2), 155-165
ICES (2016): SISP 4 - A metadata convention for processed acoustic data from active acoustic systems. ICES, https://doi.org/10.17895/ICES.PUB.7434
Ryan, Tim E; Downie, Ryan A; Kloser, Rudy J; Keith, Gordon (2015): Reducing bias due to noise and attenuation in open-ocean echo integration data. ICES Journal of Marine Science, 72(8), 2482-2493, https://doi.org/10.1093/icesjms/fsv121
Coverage:
Median Latitude: -10.825000 * Median Longitude: -78.025000 * South-bound Latitude: -18.300000 * West-bound Longitude: -83.900000 * North-bound Latitude: -3.500000 * East-bound Longitude: -72.300000
Date/Time Start: 2001-10-07T14:59:21 * Date/Time End: 2001-11-10T06:35:13
Event(s):
0110-11_Humboldt * Latitude Start: -17.800000 * Longitude Start: -72.300000 * Latitude End: -3.500000 * Longitude End: -83.900000 * Date/Time Start: 2001-10-08T22:38:53 * Date/Time End: 2001-11-10T00:18:11 * Campaign: 0110-11_Humboldt * Basis: Humboldt * Method/Device: Echosounder, Simrad EK500 (Kongsberg Maritime AS) (EK500)
0110-11_Olaya * Latitude Start: -18.300000 * Longitude Start: -73.200000 * Latitude End: -3.700000 * Longitude End: -82.700000 * Date/Time Start: 2001-10-07T14:59:21 * Date/Time End: 2001-11-10T06:35:13 * Campaign: 0110-11_Olaya * Basis: Olaya * Method/Device: Echosounder, Simrad EK500 (Kongsberg Maritime AS) (EK500)
Comment:
The authors of the dataset would like to acknowledge the technical support from the Echoview Software team, specially to Haley Viehman, for her advice and support to design the processing routine.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Gutierrez Torero, Mariano | |||
| 2 | Binary Object | Binary | Gutierrez Torero, Mariano | |||
| 3 | Binary Object (Media Type) | Binary (Type) | Gutierrez Torero, Mariano | |||
| 4 | Binary Object (File Size) | Binary (Size) | Bytes | Gutierrez Torero, Mariano | ||
| 5 | File content | Content | Gutierrez Torero, Mariano |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
8 data points