Jökull - 01.01.2015, Page 67

The Eldgjá lava flow on Mýrdalssandur
Hafursey
18º45’W 18º30’W
63
º3
5’
N
63
º3
0’
N
0 4km
Álftaver
lava field
Kötlujökull
nT
0
4000
-4000
2
3
4
5
6
7
1
8
9
10
11
12
1314
Figure 6. Magnetic profiles 1–14 at Mýrdalssandur on a satellite image from USGS (2013). The purple discon-
tinuous line marks the westernmost location of the lava edge determined by this study and the discontinuous
green line possible location of lava ledges. The Álftaver lava field and the Kriki hyaloclastite flow are from
Larsen (2000). – Mæld segulsnið (1–14) á Mýrdalssandi. Græna línan sýnir staðsetningu stalla í hrauninu og
fjólubláa línan hraunjaðarinn. Áætluð staðsetning jaðars og stalla syðst og nyrst er sýnd með slitnum línum.
Segmentation not identified
Profiles 13 and 14 (Figure 6) do not show a clear seg-
mentation and have signatures different from that seen
in the other profiles. The anomaly amplitude does not
increase towards the northeast nor does the depth to
magnetic sources decrease. The profiles can be sub-
divided into shorter segments alternating between in-
creasing and decreasing anomaly amplitude and mag-
netic source depth. As a result, the location of a buried
JÖKULL No. 65, 2015 67