Position at 22.00 29.13 87 02We tracked
the lone whale mentioned in yesterday’s log through a couple of dive
cycles to give us all a chance to get used to photographing,
collecting data and tracking animals again and to make sure we had
all the information on the whale that we needed. This was also our
first chance to use some new data collection routines.
Over the last year Douglas Gillespie, who
wrote the Logger program that we use to collect data, has introduced
some significant enhancements: allowing forms to be opened by remote
buttons and for many instances of a form to open as tabs on a single
page. Ricardo, one of our more technical team members, has coupled
this to a set of wireless remote switches allowing us to open
forms, and initiate activities such as making recordings, from on
deck or anywhere on the boat. We believe that these two innovations
will allow us to collect a better more integrated dataset, but as
with any new system, initial trials will probably suggest some
tweaking and fine tuning.
As we left the whale, under sail, to resume
our monitoring survey we were able to make an extended recording of
the animal at steadily increasing ranges. This is for a team at
Herriot Watt University in Edinburgh who are developing an open
source software package, PAMGUARD, to facilitate the detection and
tracking of cetaceans for mitigation during seismic surveys with
funding from the IRFC. Sperm whales are one of their priority
species and we will be making recordings for them like this whenever
we are moving away from whales after tracking to resume monitoring.
Unfortunately, for the rest of the day we
suffered the now familiar frustration of excellent weather but no
whales. As we move west in the Northern Gulf, however, we expect to
come into areas of higher abundance and larger groups.
As I write this, 22:00, we have just sailed by
a pair of sperm whales. We typically only track animals heard after
03:00 in the morning. The wind’s picked up allowing us to sail and
it’s a beautiful night!