Icelandic rhythmics: Annual modulation of land elevation and plate spreading by snow load

@article{Grapenthin2006IcelandicRA,
  title={Icelandic rhythmics: Annual modulation of land elevation and plate spreading by snow load},
  author={Ronni Grapenthin and Freysteinn Sigmundsson and Halld{\'o}r Geirsson and Th{\'o}ra {\'A}rnad{\'o}ttir and Virginie Pinel},
  journal={Geophysical Research Letters},
  year={2006},
  volume={33}
}
We find strong correlation between seasonal variation in CGPS time series and predicted response to annual snow load in Iceland. The load is modeled using Green's functions for an elastic halfspace and a simple sinusoidal load history on Iceland's four largest ice caps. We derive E = 40 ± 15 GPa as a minimum value for the effective Young's modulus in Iceland, increasing with distance from the Eastern Volcanic Zone. We calculate the elastic response over all of Iceland to maximum snow load at… 

Short‐term variations of Icelandic ice cap mass inferred from cGPS coordinate time series

As the global climate changes, understanding short‐term variations in water storage is increasingly important. Continuously operating Global Positioning System (cGPS) stations in Iceland record

Discriminating volcano deformation due to magma movements and variable surface loads: Application to Katla subglacial volcano, Iceland

SUMMARY Surface displacements induced by ice load variation through time are calculated by spatial integration of Green's function for both end-members: an elastic half-space and a thick elastic

Constraints on deformation processes in Iceland from space geodesy: seasonal load variations, plate spreading, volcanoes and geothermal fields

Iceland is subject to many ground deformation processes. High levels of volcanic and tectonic activity are caused by a hotspot underlain by excessive mantle upwelling interacting with a divergent

InSAR observations and models of crustal deformation due to a glacial surge in Iceland

Surges are common at all the major ice caps in Iceland. Ice masses of gigatons may shift from the upper part of the outlet glacier towards the terminus in a few months, advancing the glacier front by

Annual variations in GPS‐measured vertical displacements near Upernavik Isstrøm (Greenland) and contributions from surface mass loading

In response to present‐day ice mass loss on and near the Greenland Ice Sheet, steady crustal uplifts have been observed from the network of Global Positioning System (GPS) stations mounted on

Seasonal modulation of seismicity: the competing/collaborative effect of the snow and ice load on the lithosphere

Seasonal patterns associated with stress modulation, as evidenced by earthquake occurrence, have been detected in regions characterized by present day mountain building and glacial retreat in the

Iceland rising: Solid Earth response to ice retreat inferred from satellite radar interferometry and visocelastic modeling

A broad uplift occurs in Iceland in response to the retreat of ice caps, which began circa 1890. Until now, this deformation signal has been measured primarily using GPS at points some distance away

A broad uplift occurs in Iceland in response to the retreat of ice caps , which began circa 1890

[1] A broad uplift occurs in Iceland in response to the retreat of ice caps, which began circa 1890. Until now, this deformation signal has been measured primarily using GPS at points some distance

Stress Models of the Annual Hydrospheric, Atmospheric, Thermal, and Tidal Loading Cycles on California Faults: Perturbation of Background Stress and Changes in Seismicity

Stresses in the lithosphere arise from multiple natural loading sources that include both surface and body forces. The largest surface loads include near‐surface water storage, snow and ice,

Overview of results from continuous GPS observations in Iceland from 1995 to 2010

Iceland is a natural laboratory for a variety of processes associated with crustal deformation, such as earthquakes, magmatic events, tectonic plate motions, and glacial load changes. Continuous GPS
...

References

SHOWING 1-10 OF 19 REFERENCES

Discriminating volcano deformation due to magma movements and variable surface loads: Application to Katla subglacial volcano, Iceland

SUMMARY Surface displacements induced by ice load variation through time are calculated by spatial integration of Green's function for both end-members: an elastic half-space and a thick elastic

Current plate movements across the Mid-atlantic ridge determined from 5 years of continuous GPS measurements in Iceland

[1] We analyze data spanning up to 5 years from 18 continuous GPS stations in Iceland, computing daily positions of the stations with three different high-level geodetic processing software packages.

SAFRAN-Crocus snow simulations in an unstable and windy climate

Abstract SAFRAN and Crocus are simulation systems developed at the Centre d’Etudes de la Neige, the snow research department of Météo-France. SAFRAN analyzes weather parameters relevant to snow on

Satellite interferometric observations of displacements associated with seasonal groundwater in the Los Angeles basin

[1] The Newport-Inglewood fault zone (NIFZ) displays interferometric synthetic aperture radar (SAR) phase features along most of its length having amplitudes of up to 60 mm. However, interpretation

The Physics of Glaciers

The transformation of snow to ice mass balance heat budget and climatology structure and deformation of ice hydraulics and glaciers glacier sliding deformation of subglacial till structures and

Mapping of precipitation in Iceland using numerical simulations and statistical modeling

Precipitation in Iceland during a period of 10 years is simulated with the PSU/NCAR MM5 model. The results are compared with precipitation estimated by a statistical model based on observations and a

Seasonal Modulation of Interseismic Strain Buildup in Northeastern Japan Driven by Snow Loads

  • K. Heki
  • Environmental Science
    Science
  • 2001
The snow load modulates secular strain buildup in northeastern Japan due to the Pacific Plate subduction, but its relevance to the seasonal change of earthquake occurrences remains uncertain.

Geological map of Iceland, bedrock geology, scale 1:50,000, Icelandic Mus

  • Nat. Hist
  • 1989

Bernese GPS Software Version 5.0