Jökull - 01.12.2003, Blaðsíða 18

Thordarson et al.
Laki cone-row
Grímsvötn
Laki lava flow
20 km
Skaftá
18°
64°
Grímsvötn
Vatnaj kullö
15-25o
P
Ú
L N Ö
K
Laki fissures
Figure 4. Map showing the relative position of the three eldgjás mentioned by Steingrímsson accounts as it
would be when viewed from Prestbakki (P) or Kirkjubæjarklaustur (K). The double arrows point towards Út-
norðursgjá (Ú) and Landnorðursgjá (L), respectively and the dot represents the peak of Mt. Kaldbakur. Broken
lines show the sightings of the Austur-Landnorðursgjá (Grímsvötn) as described in the contemporary accounts:
N, Núpstaður; Ö, Öræfi. The vectors (inset) show the angular offset in sense of directions in the Síða district at
the time of the Laki eruption. – Innbyrðis afstaða eldgjánna þriggja, Útnorðursgjá (Ú), Landnorðursgjá (L) og
Austur-Landnorðursgjá (Grímsvötn), sem Jón Steingrímsson vitnar oft til í lýsingum sínum af Skaftáreldum.
16 JÖKULL No. 53, 2003