-08
– 225 stations
Introduction Data & Methods Results
138 mutual stations
Climate grids, 1x1 km
(www.seNorge.no)
Norwegian Meteorological Institute met.no
Analysis
• Mann-Kendall non-parametric trend test
– Evaluate significance of trends in snow series
• Linear trend test
– Compare slopes to mean winter temperature
• Analysis of correlation
– Investigate snow parameters sensitivity
/media/ces/Dyrrdal_Anita_CES_2010.pdf
-level readings. The results show a remarkable positive correlation
between water-level - a proxy for discharge - and tremor intensity. This relationship is especially
apparent at fast-flowing, turbulent rivers. Similarly, an infrasound array to the north of the Vatnajökull
ice-cap shows diurnal variations in acoustic signals that follow water-level changes in a nearby glacial
/media/norsem/norsem_matthew.pdf
The observed travel time differences already mentioned can either be obtained from absolute times of
measured (picked) phase arrivals (logged in earthquake catalogs) or as relative times between phases
measured with cross-correlation (CC) of waveforms. CC between closely spaced earthquakes can give
highly accurate relative time differences between phases, and can correct bad picks from
/media/norsem/norsem_begga.pdf
Iceland Seismic Zone. It was implemented in connection with the European REAKT project and lead
by Kristin Vogfjörð. We use cross-correlation and double difference methods from Ragnar Slunga. We
correlate new single automatic located events with waveforms of events from a high-resolution library
(catalog) of active mapped faults in the area and also from a library of well located single events
/media/norsem/norsem_gunnar.pdf
fault zone in the Kuusamo area, the gradient seems to
be associated with a zone of increased seismicity. In these areas, the crustal thickness gradients are
optimally oriented for reactivation. Because the spatial distribution of the registered earthquakes
exhibits little to no correlation with the an existing ellipsoidal rebound model or Glacial Isostatic
Adjustment (GIA
/media/norsem/norsem_korja.pdf
winter balance (bw) was 1.43 m w.e, themean summer balance (bs) w s –1.72 m w.e. Stor-breen had a transient mass surplus in the period1989–1995 due to high bw and decreased bs. Th in-crease in bw is related to the highly positive NorthAtlantic Oscillation (NAO) index in this period(Pohjola and Rogers 1997; Hanssen-Bauer and Før-land 1998; Rasmussen and Conway 2005) although
correlation between
/media/ces/GA_2009_91A_4_Andreassen.pdf
Roberts and others
Thirty years of borehole strainmeter measurements in Iceland
Ólafur Guðmundsson and Bryndís Brandsdóttir
Geothermal seismic noise at Ölkelduháls
Ólafur Guðmundsson and Roland Roberts
Ambient seismic noise correlation in two dimensions
Páll Einarsson
Mapping of Holocene surface ruptures in the South Iceland Seismic Zone
Páll Einarsson and others
Radon monitoring in the South
/earthquakes-and-volcanism/conferences/jsr-2009/featured/
strainmeter measurements in Iceland
Ólafur Guðmundsson & Bryndís Brandsdóttir - Geothermal seismic noise at Ölkelduháls
Ólafur Guðmundsson & Roland Roberts - Ambient seismic noise correlation in two dimensions
Páll Einarsson & others - Radon monitoring in the South Iceland Seismic Zone
Páll Theodórsson & others - Improved radon monitoring network for earthquake precursor studies in seismic areas
/earthquakes-and-volcanism/conferences/jsr-2009/schedule/
precipitation simulated byMM5
(nine point average) at the location of the ice cap. The simulated precipitation
is within one standard deviation of the average observed winter precipitation
within this altitude range for sixteen out of nineteen winters during the period
(1987–2006). The Spearman’s rank correlation is 0.63 with a significance value
of 0.004 and the RMS error is 49.
Areal integrals
/media/ces/Paper-Olafur-Rognvaldsson_91.pdf
place. (Photo: IMO/Melissa Anne Pfeffer)
In 1953, Sigurður Þórarinsson
suggested a correlation between jökulhlaup (glacial floods) and eruptions in
Grímsvötn. When the pressure in the volcanic system is increased due to magma
accumulation and if a large volume of water is stored in the lake, the pressure
/about-imo/news/evidences-that-grimsvotn-volcano-is-getting-ready-for-the-next-eruption