Areas of Uncertainty for vocalizing marine mammals in the Chukchi Sea, August through December 2011

• Main Author: Spiesberger, John
• Format: Dataset
• Language: English
• Published: Axiom Data Science 2021
• Subjects: Chukchi Sea; Chukchi; walrus*
• Online Access: https://dx.doi.org/10.24431/rw1k57q; https://search.dataone.org/#view/10.24431/rw1k57q

We generated extremely reliable 100% Confidence Intervals of Location (CIL) for calling mammals in the Chukchi Sea. Data come from archival recordings of NOAA's CHAOZ experiment from two pentagonal acoustic arrays in shallow water between August through September 2011. CIL are generated with mathematical inventions whose implementation in software is mature, having been independently tested and evaluated by the Navy for similar problems. Sequential Bound Estimation, isodiachrons, and methods to treat 2D black holes in two-dimension location models are three of these inventions. Their combinations yield 100% CIL always containing independently measured locations of sources. Locations derived from measurements of the Time-Differences-Of-Arrival (TDOA) of sounds between pairs of receivers. Each pentagonal array detected sounds from bowhead whales, bearded seals, walruses. We produced images and data databases of the CIL for each sound identified by species. These data are useful for understanding animal behavior and forming policies meant to protect mammals from human activities. Data are locations of marine mammal calls, separated by species, in the Chukchi Sea between Aug and Dec 2011. The extremely reliable 100% CIL are useful for estimating bounds for the number of calling animals.