Correct localization with method 1.

• Main Authors: William S. D. Wilcock (3749737), Rose S. Hilmo (4537330)
• Format: Still Image
• Language: unknown
• Published: 2021
• Subjects: Biological Sciences not elsewhere classified; Mathematical Sciences not elsewhere classified; Physical Sciences not elsewhere classified; studying marine mammals; passive acoustic monitoring; ocean bottom seismometers; many spurious solutions; increasing sampling rates; future experiments might; div >< p; balaenoptera musculus </; widely spaced network; false positives must; obtain tracks using; least 20 locations; earliest arrival time; different b calls; true positives; large network; b call; vocalize extensively; smooth paths; seismic frequencies; requiring groups; pacific northwest; obtained iteratively; minimize changes; localize calls; including constraints; important tool; follow within; first harmonic; feasible time; distance window; detecting harmonics; describe methods; calls identified; approaches lead; 15 hz; Pacific; Balaenoptera musculus
• Online Access: https://doi.org/10.1371/journal.pone.0260273.g005

An example of a successful localization using method 1 that used the likelihood function of Eq ( 3 ) for a master detection on station J53A at 00:05:35 UT on December 13, 2011. The upper two panels are maps showing (a) the logarithm of the likelihood function L ( x ) ( Eq 3 ) and (b) the probability density function P ( x ) ( Eq 8 ) with a color scale. Labeled squares show stations, with filled squares indicating stations with detection times in the solution. The 95% probability area of the location is shown by a bold black contour. (c) Eight spectrograms for 4 minutes of data starting one minute before the master detection with detections used in the solution shown as solid black labeled with the estimated probability the detection is a true positive, other detection times as thin dashed black lines, and the predicted arrival times as dot-dashed red lines. Spectrograms are created with a 4-s-window and 95% overlap, normalized by subtracting the median at each frequency, and shown as a color scale for values that exceed the 90 th percentile value. Example A and B calls are labeled on the spectrogram for station J54A.