Fróðskaparrit - 01.01.1971, Side 101

Seismic Measurements on The Faeroe Islands, 1970
109
project should give the structure of the islands perpendicular
to the striking of the rise but failed for reasons of communi-
cation. Only the shots I, II, III were observed by station 2 b.
Table 1 gives the geographical coordinates of the positions of
the land9tations, radiobuoys and the three shotpoints north-
east of the islands.
Table 1
Station 1 62°13’38.2’ ’ 7°07’27.3”
2 a 62 09 58.9 7 04 03.4
2 b 62 10 09.0 6 57 13.7
3 62 05 16.2 6 58 22.5
4 62 00 32.5 6 49 52.5
B 1 62°18.2’ 7°19.5’
B 2 62 44.8 7 57.8
B 3 63 23.6 6 33.8
Shot I 62°23.1’ 6°09.5’
Shot II 62 23.9 6 01.1
Shot III 62 28.2 5 49.4
The coordinates together with shotpoint data were used for
calculating the distances. Fig. 2 shows that the landstations
were not placed exactly in the direction of the profile. For
reasons of very rough topography it could not be made better.
Fig. 3 shows the principle of the applied seismic method.
On sea the research vessel »Meteor« of the German Hydro-
graphic Institute and under charter the 30 tons ship »Ingerd«
from Vestmanhavn operated together. The latter was used as
shooting vessel with radioconnection to »Meteor«. The pro-
filing was done by shooting in intervals along the planned
profiles. The generated seismic energy (explosives of 45, 90,
and in some cases 180 kg) was registrated as refracted waves
by the hydrophones on the profile ends and by the geophones
on land. On sea the received signals were transmitted by the
buoys with SW-radio to »Meteor« and then registrated on
magnetic tape in analog form. On land the geophones were
cableconnected to the registration equipments (type Lennartz)