Gray Whales Count annual survey of northbound migration in Santa Barbara Channel, California 2011-2012

Original provider: Michael H Smith, Gray Whales Count Dataset credits: Gray Whales Count Abstract: We have defined Gray Whales Count as a research and education project, in which observers (Counters) on land monitor the passage of gray whales (Eschrichtius robustus) migrating northbound through the nearshore of the Santa Barbara Channel, along a corridor extending approximately 3 nautical miles (nm) from shore. Each annual survey is approximately 100 consecutive days from early February though mid-May. (2011 was 105 days; 2012 was 98 days.) Conditions permitting, each survey-day begins at 9 AM and ends usually at 5 PM. Our survey site is Counter Point on the Coal Oil Point Reserve in Goleta, California, USA, with GPS coordinates, 34˚24.434'N, 119˚52.701'W. The coastline runs east-west, with northbound whales traveling west, left to right across our Point towards Point Conception. We are able to track across 200 degrees from 80˚ to 280˚ magnetic. Unfortunately, facing east, south, and west, observers also track the sun across the day. The observation team consists of from one to five Counters, including the Project Coordinator, up to two Supervisors, and up to two Observers. Supervisor shifts are four hours; Observer shifts are two hours; and the Project Coordinator is usually on-site all day. The Project Coordinator and/or a Supervisor is always on Counter Point.

Citation: Smith, M. 2012. Gray Whales Count annual survey of northbound migration in Santa Barbara Channel, California 2011-2012. Version 1.5.0. Dataset published in OBIS-SEAMAP. https://doi.org/10.82144/7ed8042e.

Published: October 08, 2025 at 00:31

URL: http://ipt.env.duke.edu/resource?r=zd_861