Monday, March 10, 2008

Franciscana Dolphins - March 9

Four Dolphins Near Sandbanks
Rain and high winds have kept us on shore today, but the satellite-linked transmitters show us that all four (4) tagged dolphins are moving through the bay as expected. This morning, all four were in the vicinity of the sandbanks where they were caught and tagged several days ago. The large red dots indicate the most recent position, and smaller white dots indicate older positions within the past 24 hours. As with any remote tracking, there is some imprecision, as demonstrated by the one white dot in a small cove to the south. Given the position of the animal immediately before and after this one, we can be pretty sure that it is anomalous.

Once the final data are obtained from Argos, we will run them through a filter program that will eliminate the biologically-impossible positions.

No comments: