PRPYECTO SIS

Buque Sarmiento de Gamboa
Diario de abordo
TOMOETNA FIELDWORK
DIARY ON BOARD THE BIO
SARMIENTO DE GAMBOA
JUNE – JULY 2014
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Buque Sarmiento de Gamboa
DAY 4- J179
Diario de abordo
28- 06 - 2014
The air-gun shooting phase continues along the line “T-I02 WAS” with shots of an intensity
of 5200 ci every 90 seconds.
4:06 GMT. The air-gun shot intensity is reduced from 5200 ci to 3800 ci due to the sighting of
dolphins. This coincides with the end of line “T-I02-WAS” and start of transect
towards line “L-I07-WAS”.
5:19 GMT: Increase in the air-gun shot intensity to the maximum of 5200 ci. Start of line “LI07_WAS”.
Line details:
LINE
STARTING LAT.
STARTING LON.
FINAL LAT.
FINAL LON.
T-I02-WAS
37°14.7734
15°31.5496
37°25.95
15°10.41
L-I07- WAS
37°27.86
15°10.29
37°52.9631
15°28.6927
Air-gun shot
6:00 GMT. The marine biologist, Clara Monaco, retakes the observation activity of sighting
and monitoring of cetaceans.
Meteorological and marine conditions: sunny, calm sea.
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Buque Sarmiento de Gamboa
Diario de abordo
11:24 GMT. End of line “L-I07- WAS”. Start of transect to line “L-I08-WAS”.
12:25 GMT. Start of line “L-I08-WAS”.
15.49 GMT. Reduction of the vessel speed to 1 knot during the change of course because one
of the air-gun buoyancy devices has deviated from its position. This coincides
with the transect between lines “L-I08-WAS”(Ended at 15:53) and “T-I09WAS”.
Line details:
Línea
LAT. INICIAL
LON. INICIAL
LAT. FINAL
LON. FINAL
L--I08-WAS
37°54.9313
15°27.2157
37°41.50
15°16.00
T-I09- WAS
37°39.7090
15°18.5720
37°32.566
15°32.177
16:15 GMT. Interruption of the shooting phase due to technical problems with one of the airgun buoyancy devices which is losing air. The other buoyancy devices are also
checked.
During the interruption (37°39.221 N, 15°19.444 E), the marine biologist sights 2 groups of
dolphins belonging to the species Stenella coeruleoalba.
18:21 GMT. Start of the Soft start air-gun phase.
20:05 GMT. Start of line “T-I09-WAS”.
22:55 GMT. Start of transect Inicio del transecto entre las líneas “ T-I09-WAS” y “T-I11WAS”.
View of Mt Etna from the oceanographic research vessel Sarmiento de Gamboa.
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