GRIIDC | R4.x267.180:0010

Dataset Available

Delphinids – Individual detections of dolphin echolocation clicks in the Gulf of Mexico, 2013

Authors: Hildebrand, John

Published On: Apr 11 2017 21:25 UTC

DOI: https://doi.org/10.7266/N7S75D8D

UDI: R4.x267.180:0010

Files

Individual Files

No. of Downloads: 10

No. of Files: 2

File Size: 119.72 MB

File Format(s):
xml

Project Information

Funded By:
Gulf of Mexico Research Initiative

Funding Cycle:
RFP-IV

Research Group:
Center for the Integrated Modeling and Analysis of Gulf Ecosystems II (C-IMAGE II)

Point of Contact

John A. Hildebrand
University of California San Diego / Scripps Institution of Oceanography
jahildebrand@ucsd.edu

Data Collection Period

2013-11-02

2013-11-03

Theme keywords

Marine mammals, passive acoustic monitoring, dolphins, delphinids, Pantropical Spotted Dolphin, Stenella attenuata, Risso's dolphin, Grampus griseus

ISO 19115-2 Metadata

View Metadata

Abstract:

This dataset contains individual detections of Risso's dolphin (Grampus griseus) and presumed pantropical spotted dolphin (Stenella attenuata) echolocation clicks from a site near the Dry Tortugas (25.537°N 84.632°W, depth 1220 m) in the Gulf of Mexico.

Suggested Citation:

Hildebrand, John. 2017. Delphinids – Individual detections of dolphin echolocation clicks in the Gulf of Mexico, 2013. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N7S75D8D

Publications:

Frasier, K. E., Wiggins, S. M., Harris, D., Marques, T. A., Thomas, L., & Hildebrand, J. A. (2016). Delphinid echolocation click detection probability on near-seafloor sensors. The Journal of the Acoustical Society of America, 140(3), 1918–1930. doi:10.1121/1.4962279

Purpose:

This dataset was developed to assess the population of dolphins in the Gulf of Mexico at the time and following the Deepwater Horizon oil spill.

Data Parameters and Units:

The dataset is organized by species. Dataset file sp180428_DT_07B.xml contains the detections for pantropical spotted dolphin and sp180457_DT_07B.xml contains the detections for Risso's Dolphin. The following is a list of data parameters found in the dataset files: Start – GMT dateTime that the detection was recorded (YYYY-MM-DDThh:mm:ss); Channel – Non-negative integer that refers to the channel number used. This refers to the channel of the data, which does not necessarily correspond to sensor position within an array (int); SpeciesID – Taxonomic serial numbers from the Integrated Taxonomic Information System (https://www.itis.gov/). SpeciesID 180428 = pantropical spotted dolphin (Stenella attenuata), SpeciesID 180457 = Risso's Dolphin (Grampus griseus); Call – Type of call detected (clicks); ReceivedLevel_dB – The received level of the call (dB re 1 μPa);

Methods:

Passive acoustic monitoring was conducted with High-frequency Acoustic Recording Packages. These data were scanned for delphinid clicks using a combination of computer algorithms and manual (analyst) scanning of the waveform and spectral data.