those already reported. Oxygen was measured at
normal levels, so there is no evidence of carbon dioxide (CO2)
accumulation, but this was not measured on these devices. Sulfur dioxide (SO2)
was not detected in the cave.An addition hazard is the potential
for roof collapse. During another visit in the past week, an ice block sized
2*4*0.4 m was seen to have collapsed from a side wall near
/about-imo/news/gas-concentrations-in-the-hofsjokull-ice-cave
5.6 earthquake indicate normal faulting (see diagram below), suggesting that the earthquake was related to spreading of a depressed block of seabed, known as graben. Analysis of the source mechanisms of the earthquakes NNW of Gjögurtá shows signs of horizontal movement. Although such strike-slip events (see diagram below) are common for this region, they seem to indicate that seismicity
/about-imo/news/nr/2561
by an approximately 70 km long and 15 km wide left lateral shear zone, the
South Iceland seismic zone (SISZ). Approximately every 100 years a sequence of large
earthquakes of magnitudes M 6-7 occurs in the zone and traces of many Holocene faults
have been mapped on the surface. Although the trend of the zone is east-west, major
earthquakes take place on north-south striking faults, which leads
/media/vedurstofan/utgafa/skyrslur/2010/2010_003rs.pdf
and their interactions with sustainable develop-
Figure I.1. Schematic framework representing anthropogenic drivers, impacts of and responses to climate change, and their linkages.
Schematic framework of anthropogenic climate change drivers, impacts and responses
ment. Topic 5 assesses the relationship between adaptation and
mitigation on a more conceptual basis and takes a longer-term per-
spective. Topic 6/media/loftslag/IPPC-2007-ar4_syr.pdf
of the structures is approximately at the elevation of the top row it is not clear whether the snow cover above the structure would have been released as an avalanche in the absence of the structures.
In a few locations one could see that the avalanche slab had started to break up but was nevertheless moving as a more or less solid block when it was stopped by the supporting structures. It may be assumed
/about-imo/news/nr/2476
to the west of the structures is approximately at the elevation of the top row it is not clear whether the snow cover above the structure would have been released as an avalanche in the absence of the structures.
In a few locations one could see that the avalanche slab had started to break up but was nevertheless moving as a more or less solid block when it was stopped by the supporting structures. It may
/avalanches/articles/nr/2475
slab had started to break up but was nevertheless moving as a more or less solid block when it was stopped by the supporting structures. It may be assumed that the avalanche would have been many times larger, and that it might have reached the health care centre, if the supporting structures had not reduced the released snow volume by an order of magnitude.
This is the first example
/about-imo/news/nr/2476/
that the avalanche slab had started to break up but was nevertheless moving as a more or less solid block when it was stopped by the supporting structures. It may be assumed that the avalanche would have been many times larger, and that it might have reached the health care centre, if the supporting structures had not reduced the released snow volume by an order of magnitude.
This is the first example
/avalanches/articles/nr/2475/