Sei whale:

Date/time (local)OccurrenceLatitudeLongitudeNotes
08/26/20 09:30:58Possibly detected48.5392-62.1150Classified sei call is interspersed with other noise, is short and quiet BUT could it be part of a triplet? Blue whales also make triplets and these calls are not obviously separated by 3.5 sec (sei characteristic) so I am not confident it is a sei. Two other calls are not classified but are better shape and amplitude than the classified call. Note that there have been numerous visual sightings of blue whales but no sightings of sei whales in the GoSL this year despite record high levels of survey effort by multiple aircraft.
08/26/20 20:15:58Possibly detected48.5124-62.0426
08/26/20 20:45:58Possibly detected48.5161-62.0462Here is another period where it is ambiguous whether sei or blue whales are calling, or both. Many of these downsweeps are longer than sei, and there may be an arch-call in P6. Two of the calls are classified as sei whale call types, but these could be partial pitch tracks of longer blue whale downsweep calls.
08/26/20 21:00:58Possibly detected48.5179-62.0480
08/26/20 22:00:58Possibly detected48.5253-62.0553This period is really interesting because the downsweeps are short, loud and convex, which looks like a sei whale call. One is classified as a sei (call type 3). But there are also two longer downsweeps in P1 and P7 that are more characteristic of blue.
08/26/20 22:30:58Possibly detected48.5290-62.0590


Blue whale:

Date/time (local)OccurrenceLatitudeLongitudeNotes
08/26/20 08:15:58Possibly detected48.5438-62.1248
08/26/20 11:30:58Possibly detected48.5275-62.0899P16 arch downsweep
08/26/20 11:45:58Possibly detected48.5267-62.0866P15 arch downsweep
08/26/20 20:45:58Possibly detected48.5161-62.0462Here is another period where it is ambiguous whether sei or blue whales are calling, or both. Many of these downsweeps are longer than sei, and there may be an arch-call in P6. Two of the calls are classified as sei whale call types, but these could be partial pitch tracks of longer blue whale downsweep calls.
08/26/20 21:00:58Possibly detected48.5179-62.0480
08/26/20 21:30:58Possibly detected48.5216-62.0517Possible blue whale downsweep in P7.
08/26/20 21:45:58Possibly detected48.5235-62.0535Possible blue whale downsweep in P16




Notes:

Date/time (local)LatitudeLongitudeNotes
08/26/20 00:30:5848.5776-62.1917classified fin whale calls do not have constant IPI
08/26/20 09:30:5848.5392-62.1150Classified sei call is interspersed with other noise, is short and quiet BUT could it be part of a triplet? Blue whales also make triplets and these calls are not obviously separated by 3.5 sec (sei characteristic) so I am not confident it is a sei. Two other calls are not classified but are better shape and amplitude than the classified call. Note that there have been numerous visual sightings of blue whales but no sightings of sei whales in the GoSL this year despite record high levels of survey effort by multiple aircraft.
08/26/20 11:30:5848.5275-62.0899P16 arch downsweep
08/26/20 11:45:5848.5267-62.0866P15 arch downsweep
08/26/20 16:30:5848.5083-62.036320 Hz calls in P16 do not have constant IPI
08/26/20 20:45:5848.5161-62.0462Here is another period where it is ambiguous whether sei or blue whales are calling, or both. Many of these downsweeps are longer than sei, and there may be an arch-call in P6. Two of the calls are classified as sei whale call types, but these could be partial pitch tracks of longer blue whale downsweep calls.
08/26/20 21:30:5848.5216-62.0517Possible blue whale downsweep in P7.
08/26/20 21:45:5848.5235-62.0535Possible blue whale downsweep in P16
08/26/20 22:00:5848.5253-62.0553This period is really interesting because the downsweeps are short, loud and convex, which looks like a sei whale call. One is classified as a sei (call type 3). But there are also two longer downsweeps in P1 and P7 that are more characteristic of blue.


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