Jökull - 01.12.1965, Blaðsíða 9

TABLE I
Changes of water level at Depill.
M.above
Date sea level
1954, July
1955, June 3 1340.0
1957, June 6 1378.5
1957, Sept. 15 1389.0
1958, June 10 1396.6
1958, Sept. 10 1401.3
1959, May 27 1410.3
1959, Sept. 17 1420.0
1960, January
1960, June 9 1355.0
1961, June 17 1379.0
1961, Sept. 11 1381.2
1962, June 7 1391.5
1963, June 5 1405.8
1964, May 25 1417.5
1965, June 3 1426
1965, Aug.—Sept.
Rising Rising Lowering
M cm/24 hours M
90
38.5 5.3
10.5 10.4
7.6 2.8
4.7 5.1
9.0 3.5
9.7 8.6
70
24 6.4
2.2 2.6
10.3 3.9
14.3 3.8
11.7 3.3
8.5 2.3
80
Remarks
Jökullilaup, culminating
July 18
Jökulhlaup, culminating
Jan. 24
Jökulhlaup, culminating
Sept. 8
TABLE II
Seisrnic soundings of the ice-thickness in the Grimsvötn area.
Elevation Thickness Elevation
of surface of ice of bedrock Quality
Station M M M of reflection
ii 1512 435 1077 fair
in 1362 515-550 847-812 „
IV 1362 440? 922? doubtful
V 1365 (640) (725) poor
VI 1362 510 852 good
VII 1392 (490) (902) poor
VIII 1522 515? 1007? doubtful
IX 1519 670? 849? „
X 1487 565? 922? „
XI 1450 540 910 good
XII 1410 850 560 fair
XIII 1435 ?? ?? no reflection
XIV 1527 550 977 fair
JÖKULL 115