Transient volcano deformation sources imaged with interferometric synthetic aperture radar: Application to Seguam Island, Alaska

@article{Masterlark2004TransientVD,
  title={Transient volcano deformation sources imaged with interferometric synthetic aperture radar: Application to Seguam Island, Alaska},
  author={Timothy Masterlark and Zhong Lu},
  journal={Journal of Geophysical Research},
  year={2004},
  volume={109}
}
[1] Thirty interferometric synthetic aperture radar (InSAR) images, spanning various intervals during 1992–2000, document coeruptive and posteruptive deformation of the 1992–1993 eruption on Seguam Island, Alaska. A procedure that combines standard damped least squares inverse methods and collective surfaces, identifies three dominant amorphous clusters of deformation point sources. Predictions generated from these three point source clusters account for both the spatial and temporal complexity… 

Interferometric synthetic aperture radar study of Okmok volcano, Alaska, 1992-2003: Magma supply dynamics and postemplacement lava flow deformation

[1] Okmok volcano, located in the central Aleutian arc, Alaska, is a dominantly basaltic complex topped with a 10-km-wide caldera that formed circa 2.05 ka. Okmok erupted several times during the

Pyroclastic Flow Deposits and InSAR: Analysis of Long-Term Subsidence at Augustine Volcano, Alaska

This study analyzes the extent, volume, thickness, and variability in pyroclastic flow deposits on Augustine Volcano from measuring their deformation rates with interferometric synthetic aperture radar (InSAR).

Volcano deformation source parameters estimated from InSAR: Sensitivities to uncertainties in seismic tomography

The eruption cycle of a volcano is controlled in part by the upward migration of magma. The characteristics of the magma flux produce a deformation signature at the Earth's surface. Inverse analyses

Rheologic and structural controls on the deformation of Okmok volcano, Alaska: FEMs, InSAR, and ambient noise tomography

Received 23 January 2009; revised 5 August 2009; accepted 13 October 2009; published 27 February 2010. [1] Interferometric synthetic aperture radar (InSAR) data indicate that the caldera of Okmok

Radar interferometry observations of surface displacements during pre- and coeruptive periods at Mount St. Helens, Washington, 1992-2005

We analyzed hundreds of interferograms of Mount St. Helens produced from radar images acquired by the ERS-1/2, ENVISAT, and RADARSAT satellites during the 1992-2004 preeruptive and 2004-2005

Synthesis of global satellite observations of magmatic and volcanic deformation: implications for volcano monitoring & the lateral extent of magmatic domains

Global Synthetic Aperture Radar (SAR) measurements made over the past decades provide insights into the lateral extent of magmatic domains, and capture volcanic process on scales useful for volcano

InSAR Imaging of Volcanic Deformation over Cloud-prone Areas - Aleutian Islands

Interferometric synthetic aperture radar (INSAR) is capable of measuring ground-surface deformation with centimeter-tosubcentimeter precision and spatial resolution of tens-ofmeters over a relatively

On the lack of InSAR observations of magmatic deformation at Central American volcanoes

A systematic survey of 3 years of L band interferometric synthetic aperture radar (InSAR) measurements of the Central American Volcanic Arc shows a striking lack of magmatic deformation. We make

Magma intrusion and deformation predictions: Sensitivities to the Mogi assumptions

[1] Mogi's (1958) magma intrusion model is widely used to predict observed deformation of active volcanoes. The model simulates a small spherical expansion source (SES) embedded in a homogeneous,
...

References

SHOWING 1-10 OF 52 REFERENCES

Crustal deformation near Hengill volcano, Iceland 1993–1998: Coupling between magmatic activity and faulting inferred from elastic modeling of satellite radar interferograms

Tectonic activity in the Hengill volcanic area in southwestern Iceland accelerated in July 1994, when an unusually persistent swarm of moderate-sized earthquakes began. Although the largest events

Volcano‐wide fringes in ERS synthetic aperture radar interferograms of Etna (1992–1998): Deformation or tropospheric effect?

Mount Etna (3300 m) is the volcano that has been first and most studied by differential synthetic aperture radar. Previous papers gave evidence for a large-scale deformation of the entire edifice

Synthetic aperture radar interferometry of Okmok volcano, Alaska: radar observations

ERS-1/ERS-2 synthetic aperture radar interferometry was used to study the 1997 eruption of Okmok volcano in Alaska. First, we derived an accurate digital elevation model (DEM) using a tandem

Source model for the 2001 flank eruption of Mt. Etna volcano

Using interferometric synthetic aperture radar (InSAR) we constrain the deformation sources for the July–August 2001 flank eruption of Mt. Etna volcano, Italy. InSAR data from ascending and

Magma supply dynamics at Westdahl volcano, Alaska, modeled from satellite radar interferometry

[1] A group of satellite radar interferograms that span the time period from 1991 to 2000 shows that Westdahl volcano, Alaska, deflated during its 1991–1992 eruption and is reinflating at a rate that

Deformation and seismicity in the Coso geothermal area, Inyo County, California: Observations and modeling using satellite radar interferometry

Interferometric synthetic aperture radar (InSAR) data collected in the Coso geothermal area, eastern California, during 1993–1999 indicate ground subsidence over a ∼50 km^2 region that approximately

Interferometric synthetic aperture radar studies of Alaska volcanoes

This paper summarizes the recent InSAR studies of several Alaska volcanoes, which include Okmok, Akutan, Kiska, Augustine, Westdahl, and Peulik volcanoes.

Volcanic and tectonic deformation on Unimak Island in the Aleutian Arc, Alaska

+3.3 � 10 6 m 3 yr � 1 . The GPS data indicate that inflation may have slowed down slightly compared with interferometric synthetic aperture radar (InSAR) observations between 1993 and 1998. The

Steady state deformation of the Coso Range, east central California, inferred from satellite radar interferometry

Observations of deformation from 1992 to 1997 in the southern Coso Range using satellite radar interferometry show deformation rates of up to 35 mm yr .1 in an area ∼10 km by 15 km. The deformation

Geodetic imaging: reservoir monitoring using satellite interferometry

SUMMARY Fluid fluxes within subsurface reservoirs give rise to surface displacements, particularly over periods of a year or more. Observations of such deformation provide a powerful tool for mapping
...