Archive for May 4th, 2010

Dall’s porpoises and calibration analysis

Mitchell Bay to Reid Harbor

Finally the winds died down enough for us to venture forth into Haro Strait again to look for whales and conduct other research. We enjoyed some breezes in the morning and rode the flood time up to Turn Point on Stuart Island where we positioned ourselves to watch and listen for killer whales. Val came aboard this morning in Snug Harbor which allowed us to have mentor meetings with both Val and Jason and all to iron out some more of the wrinkles in research methods. Science always makes its best progress when multiple minds focus on a problem and discuss the matter at hand.  During the day we were graced with sightings of a number of porpoises, including two different sightings of around 3 Dall’s porpoise in the area of Turn Point. This was a real treat as we have not seen many in these waters during the last several years.  After a wonderful dinner at the dock in Reid Harbor we revisited our calibration exercise to make sure we all understood the process and decide which the most appropriate calibration factors to use were. Nothing like an invigorating discussion of logarithmic decibel scales around the lounge of the Gato Verde to end off the day.

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