Citation:

PANGAEA.939252

Name: 38 kHz water column acoustic data collected in October/November 2001 during survey 01110-11 in the territorial waters of Peru
Published: 2021-12-10
License: https://creativecommons.org/licenses/by/4.0/
Keywords: 38 kHz; echosounder; EK500; Humboldt Current; IMARPE; mesopelagic; Peru

Always quote citation above when using data! You can download the citation in several formats below.

Published: 2021-12-10 • DOI registered: 2022-10-27

RIS Citation BibTeX Citation Text Citation ShareShow Map Google Earth

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.

Keyword(s):

38 kHz; echosounder; EK500; Humboldt Current; IMARPE; mesopelagic; Peru

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: * Basis: * Method/Device: (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: * Basis: * Method/Device: (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
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

Data

Download dataset as tab-delimited text — use the following character encoding:

All files referred to in data matrix can be downloaded in one go as ZIP or TAR. Be careful: This download can be very large! To protect our systems from misuse, we require to sign up for an user account before downloading.

1 Event	2 Binary	3 Binary (Type)	4 Binary (Size) [Bytes]	5 Content
0110-11_Humboldt	imarpe_humboldt_2001-10-08.metadata.csv	text/plain	6 kBytes	ICES (2016). A metadata convention for processed acoustic data from active acoustic systems, SISP 4 TG-AcMeta Version 1.10, ICES WGFAST Topic Group, TG-AcMeta. 47 pp.
0110-11_Humboldt	imarpe_humboldt_2001-10-08.nc	application/x-hdf	3.3 MBytes	NetCDF Climate and Forecast (CF) Metadata Conventions, v 1.7
0110-11_Olaya	imarpe_olaya_2001-10-07.metadata.csv	text/plain	6 kBytes	ICES (2016). A metadata convention for processed acoustic data from active acoustic systems, SISP 4 TG-AcMeta Version 1.10, ICES WGFAST Topic Group, TG-AcMeta. 47 pp.
0110-11_Olaya	imarpe_olaya_2001-10-07.nc	application/x-hdf	4.3 MBytes	NetCDF Climate and Forecast (CF) Metadata Conventions, v 1.7