the past 2 decades. Summer ablation was found to be less than 50% of the 1995 - 2014 average.
Fig. 3 (enlarge). Ablation stake (white) near the northern margin of Hofsjökull on October 9th 2015 at a height of 980 m. A yellow indicator gives the height of the aluminium stake, whereas the red bar shows the typical stake height during years with negative mass balance. Photo: Bergur Einarsson
/about-imo/news/nr/3229
Dashed lines encompass the V-shaped zone of tephra deposition. (c)
Oblique aerial view from west of the tephra plume at Grímsvötn on 2 November. Note the ashfall
from the plume. (Photo by M. J. Roberts.) (d) Weather radar image at 0400 UTC on 2 November.
The top portion shows its projection on an EW-vertical plane. The minimum detection height for
Grímsvötn is seen at 6 km, and the plume extends
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means that the failure surface
of the slide is concave. The volume of the slide is roughly estimated 30–50 million m3,
however, the estimation may change when further measurements and analyses have been
carried out, especially on the part that is in the lake and regarding the depth of the sliding
surface. If the bottom of the slide reaches below the lake bottom, the total volume of material
/media/ofanflod/myndasafn/frodleikur/askja_minnisblad_ens.pdf
6University of Washington,
Seattle, WA 98195, USA. 7NOAA Geophysical Fluid
Dynamics Laboratory, Princeton, NJ 08540, USA.
*Author for correspondence. E-mail: cmilly@usgs.gov.
An uncertain future challenges water planners.
Published by AAAS
on July 12, 201
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of the slide is concave. The volume of the slide is roughly estimated 30–50 million m³, however, the estimation may change when further measurements and analyses have been carried out, especially on the part that is in the lake and regarding the depth of the sliding surface. If the bottom of the slide reaches below the lake bottom, the total volume of material that moved may be a lot more
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measurements
and analyses have been carried out, especially on the part that is in
the lake and regarding the depth of the sliding surface. If the bot-
tom of the slide reaches below the lake bottom, the total volume of
material that moved may be a lot more.
The water level of Lake Öskjuvatn rose 1–2 m after the rockslide. The
rise of the water level will be measured precisely because it gives
/media/vedurstofan/utgafa/skyrslur/2015/IMO_AnnualReport2014.pdf