WHaLE west coast 2016

AMARs deployments

Acoustic data was collected by an Autonomous Multichannel Acoustic Recorder (AMAR), which is positioned on the ocean floor. An acoustic release system is connected via a ground line to facilitate retrieval of the recorder. The AMAR records up to 32 kHz, with focus given to the lower frequencies in analysis for presence of baleen whale calls.

February - May 2016: offshore location for gray whale migration and winter killer whale use of Clayoquot Sound

May - September 2016: AMARs redeployed in Cow Bay, a main foraging site of gray whales and humpback whales. It is also frequently used as a calf weaning area

September 2016 - - Spring 2017: Aimed at collecting both southern and northern migration calls for comparison

 

Slocum Glider deployments

Ocean gliders are an autonomous underwater vehicle that can be preprogrammed to follow a course independently. It has no engine, but uses a ballasting system in the nose cone to allow it to sink and float, to move through the water in a saw-tooth pattern. It is outfitted with a number of sensors and scientific recorders that are key in helping define whale habitat and the properties that define and areas attractive to whales. The gliders used in WHaLE are outfitted with a digital acoustic monitor, known as the DMON which protrudes from the nose of the glider. This is a passive acoustics recorder. It records constantly so think it as a continual sweep for the larger baleen and toothed whales. The calls of a whale are our cue to their presence. From that we can tie their presence to environmental variables.

 

March - April 2016: Data processing is ongoing

Publications

Read about our work on killer whale presence in Clayoquot Sound using the AMARs data and in collaboration with Strawberry Isle Marine Research Society (http://strawberryisle.org/)

http://www.sciencedirect.com/science/article/pii/S2351989416300373