Jökull - 01.12.1985, Page 84

August. Measurements in the small stream to the east
showed that during the same period, water temperature
remained nearly constant at just over 0°C, while con-
ductivity varied between 10.0 to 70.0 pS/cm.
Concurrent observations being made at a
meteorological station established by the expedition at
Kverkárnes, some 23 km. to the ENE of Kverkjökull
reveal some interesting data of relevance to the explan-
ation of the changes described above. At 1800h on 11
August, the observer reported a very strong smell of
sulphur. During the previous three hours, the wind had
been blowing steadily between 190° and 220°, and had
gradually decreased from 13.0 m/s at 1500h to 6.0 m/s at
1800h. These observations suggest that the source of the
sulphur smell was the Kverkfjöll caldera, and that the
time of its origin was slightly after 1700h. It is accor-
dingly postulated that a minor geothermal event
occured in the late afternoon of 11 August, and that this
event resulted in the changes in the englacial/subglacial
drainage system noted above.
Ágrip
NOKKRAR ATHUGANIR Á AFRENNSLI
VATNS FRÁ KVERKFJÖLLUM
Colin Fenn, Worcester College
of Higher Education
og Ian Ashwell, Saltfordháskóla
Englandi
Höfundar segja frá mælingum á breytingum á hita-
stigi, rafleiðni árvatns og brennisteinslykt í Kverkfjöll-
um í ágúst 1981.
REFERENCES
Friedman, J.D., Williams, R.S., Thorarinsson, S. and
Pálmason, G. 1972: Infrared emissions from Kverk-
fjöll subglacial volcanic and geothermal area, Ice-
land. Jökull 22, 27—43.
Kaul, M.K., Sharma, A.R. and Bhattacharya, D.N.
1982: Geomorphology of the Gor Garang glaciers,
Himachal Pradesh, India. J. Glac. 28(98)107-115.
Editor’s note: According to Bryndís Brandsdóttir (pers.
comm. 1984) the only recorded earthquake in this
area near the time interval described was an M=2.2
event at 65°, 29.8’N, 17° 38.7’W (just east of Hamar-
inn) on 11 Aug. 1981 at 06.05.
82 JÖKULL 35. ÁR