Data Seal Location "Bubba"

From: mike williamson (williams@www1.wheelock.edu)
Date: Mon May 22 2000 - 15:27:03 EDT


Subject: location data, seal "Bubba"

Mike, et all,

It looks like this may be the last set of data from "Bubba". We received
no messages from the tag over the weekend. Generally when we loose a
signal it can be one of three possibilities, failure of the tag
attaintment, failure of the tag, or "failure" of the seal. In this case we
have been expecting "Bubbas" tag to run out of power soon, so the most
likely possibility is that the tag has exhausted its batteries. To be
sure, we generally wait for a few days to see it transmissions start up
again, however "Bubba" has been so regular in sending signals, that this is
the longest we have gone without a transmission. These last messages put
"bubba" near the deep water at the mouth of the Gulf of St.Lawrence. He
has remained in the same general area for about a week now, although he has
continued to move slowly north and east.

In all we have received over a thousand transmissions from "Bubba" (making
this one of our most detailed data sets). Even when eliminating "bad
points" we have a working data set of over 800 points. If this is the last
transmission it will mean that the tag transmitted for 155 days. A quick
calculation shows that "Bubba" probably traveled about 3,500 miles during
that time. Although this sounds like a great distance , it is quite a bit
less than other hooded seals we have tracked. "Bubba" proved to be quite
unusual in the amount of time he spent in one area, and the number of times
he came ashore in the four months we have been tracking him.

June is the month hooded seals molt, and in June we expect "Bubba" to shed
his hair and the transmitter that was attached to it.

Stay tuned...there are more seals to come...

The data:

27568 Date : 18.05.00 09:00:07 LC : A IQ : 08Lat1 : 45.624N Lon1 :
58.248W
27568 Date : 18.05.00 10:39:37 LC : 0 IQ : 56Lat1 : 45.623N Lon1 :
58.180W
27568 Date : 18.05.00 10:44:03 LC : 1 IQ : 58Lat1 : 45.600N Lon1 :
58.187W
27568 Date : 18.05.00 11:05:10 LC : A IQ : 40Lat1 : 45.609N Lon1 :
58.211W
27568 Date : 18.05.00 12:46:03 LC : 0 IQ : 58Lat1 : 45.619N Lon1 :
58.203W
27568 Date : 18.05.00 22:33:43 LC : B IQ : 00Lat1 : 45.545N Lon1 :
58.323W
27568 Date : 18.05.00 23:58:44 LC : B IQ : 00Lat1 : 45.628N Lon1 :
58.194W
27568 Date : 19.05.00 00:09:16 LC : A IQ : 08Lat1 : 45.645N Lon1 :
58.204W
27568 Date : 19.05.00 01:35:30 LC : 0 IQ : 48Lat1 : 45.670N Lon1 :
58.178W
27568 Date : 19.05.00 03:16:35 LC : A IQ : 00Lat1 : 45.715N Lon1 :
58.196W
27568 Date : 19.05.00 07:06:48 LC : 0 IQ : 58Lat1 : 45.667N Lon1 :
58.114W

later,

ge

Greg Early
Edgerton Research Laboratory
New England Aquarium
Central Wharf
Boston, Mass 02110
617-973-5246 (phone)
617-723-6207 (FAX)
gearly@neaq.org



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