Subject: Seal Mac Data (the answers) (fwd)

mike williamson (williams@www1.wheelock.edu)
Fri, 5 Sep 1997 14:47:01 -0400 (EDT)

Date: Fri, 05 Sep 1997 12:44:22 -0500
From: Greg Early <gearly@neaq.org>
To: williams@whale.simmons.edu
Subject: Mac Data (the answers)

DEPTH											
depth in meters	0-40	40-104	104-200	200-300	300-400	400-504	504-600	600-704
704-1000	>1000	TOTAL
											
DATE				DIVES							
7/28-8/6	117	147	42	31	1	0	0	0	0	0	338
	35%	43%	12%	9%	0%	0%	0%	0%	0%	0%	
											
8/7-8/16	56	6	20	24	0	0	0	0	0	0	106
	53%	6%	19%	23%	0%	0%	0%	0%	0%	0%	
											
8/16-8/25	121	14	74	159	29	6	0	0	0	0	403
	30%	3%	18%	39%	7%	1%	0%	0%	0%	0%	
											
8/26-9/4	66	7	34	115	7	0	0	0	0	0	229
	29%	3%	15%	50%	3%	0%	0%	0%	0%	0%	
											
TOTAL	360	174	170	329	37	6	0	0	0	0	1076
	33%	16%	16%	31%	3%	1%	0%	0%	0%	0%	
											
											
DURATION											
minutes	0-2	2-5	5-10	10-15	15-20	20-25	25-35	35-45	45-60	>60	TOTAL
											
DATE				DIVES							
7/28-8/6	161	3	231	6	9	0	0	0	0	3	413
	39%	1%	56%	1%	2%	0%	0%	0%	0%	1%	
											
8/7-8/16	81	2	81	1	0	1	0	0	0	5	171
	47%	1%	47%	1%	0%	1%	0%	0%	0%	3%	
											
8/16-8/25	42	0	38	37	3	0	0	0	0	0	120
	35%	0%	32%	31%	3%	0%	0%	0%	0%	0%	
													
8/26-9/4	66	1	48	133	4	0	1	1	0	0	254		
	26%	0%	19%	52%	2%	0%	0%	0%	0%	0%			
													
TOTAL	350	6	398	177	16	1	1	1	0	8	958		
	37%	1%	42%	18%	2%	0%	0%	0%	0%	1%			
													
Time at Depth													
depth in meters	0-40	40-104	104-200	200-300	300-400	400-504	504-600	600-704
704-1000	>1000			
													
DATE													
7/28-8/6	44%	35%	19%	1%	0%	0%	0%	0%	0%	0%			
													
8/7-8/16	34%	33%	20%	13%	0%	0%	0%	0%	0%	0%			
													
8/16-8/25	32%	24%	27%	17%	1%	0%	0%	0%	0%	0%			
													
8/26-9/4	29%	17%	26%	27%	1%	0%	0%	0%	0%	0%			
													
													
TOTAL	34%	25%	24%	16%	1%	0%	0%	0%	0%	0%			


OK,

So here are the answers plus some "Time at Depth" data as well.  It looks
like Mac is spending most of his time around 200-300 meters deep.  The
pattern seems to show that he is gradually going deeper since his release.
This would be a good thing as he grows and gets used to deep diving again.
This looks like what is going on because although he splits about half and
half between shallow dives and dives to 200-300 meters, in the past 10 days
over half of his dives have been to the deeper depth (in contrast to only
@12% immediately after he was released)

His duration pattern seems to be similar, with longer dives starting to show
up more frequently in the last ten days.  He now appears to be doing about
half of his dives in the 10-15 minute range.  Although every so often he
does aa really long dive of over 60 minutes.

The time at depth data also looks like he is spending more time at deeper
depths recently than immediately after he was released.  This looks like he
is spending about 27% of his time between 200-300 meters.  It also looks
like his very longs dives may be relatively shallow.

Although things are still pretty sketchy that's what I think is going on.

Regards,

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