Fróðskaparrit - 01.01.1975, Page 38

46
Earth Tides
stations are now occupied in Iceland (Reykjavik) and in
Greenland (Godhavn) and later on in the Labrador.
The »Trans World Profile 1« has been undertaken in no-
vember 1973 from Bruxeiles to Asia and includes already
nine stations: Cairo, Hyderabad, New Delhi, Kathmandu,
Bangkok, Chiang Mai, Manila, Hong Kong and Port Mores-
by.
One month observations made by UCLA at Baguio (100
km north of Manila), Sa'igon and Delhi has been reanalysed
by the new methods and gives results in close agreement
with ours.
This experience will be continued in Australia in 1975 (Dar-
win, Alice Springs, Broken Hill, Canberra, Perth, Charters
Tower, Hobart).
Bruxelles has been tied to Japan by T. Sato in 1974, using
two different gravimeters.
A project exists also to make measurements in South Ame-
rica in 1976 or 1977, with the cooperation of the Geodetic
Institute of Tucuman University (J. C. Usandivaras).
PRELIMINARY REMARKS CONCERNING THE RESULTS
OBTAINED AT TORSHAVN (Faeroe)
The measurements performed at Torshavn must be considered as a
tentative to solve the inverse problem of oceanography as described in
point 4.
The numerical results obtained here show a very different behaviour
in function of the tidal frequencies.
1. the Diurnal waves
are not very much disturbed for such a central oceanic situation as
amplitude factors and phases do not differ very much from their
continental values. The disturbance however is bigger for Ki than
for Oi.
2. the Semi-Diurnal waves
have highly disturbed amplitude factors, 13 °/o higher than their values
observed in Western Europe. However the phase is practically zero for
Mo while there is an important lag for Se. This depends upon the