Abstract
We use ALOS-1 Interferometric Synthetic Aperture Radar data spanning the period of 2007–2011 to obtain time-dependent ground deformation data over all of the volcanoes in Colombia, Ecuador, and Peru. We detect deformation on or near the proximity of Galeras, Reventador, Tungurahua, Guagua Pichincha, Sangay, and Cerro Auquihuato volcanoes, uncovering previously undocumented deformation in the latter three. Deformation is attributed to changes in pressurization of the volcanic systems (Galeras, Tungurahua, Guagua Pichincha, and Cerro Auquihuato), subsidence associated with flow deposits (Reventador), and flank creep (Sangay). Our models suggest that the pressure sources are located at depths of ∼1–6 km from the surface, indicating that the measurable deformation within our data is restricted to shallow magma chambers and hydrothermal systems.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2869-2883 |
| Number of pages | 15 |
| Journal | Geochemistry, Geophysics, Geosystems |
| Volume | 17 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 1 2016 |
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Keywords
- Andes
- InSAR time series
- volcano deformation
ASJC Scopus subject areas
- Geochemistry and Petrology
- Geophysics
Cite this
Volcano deformation survey over the Northern and Central Andes with ALOS InSAR time series. / Morales Rivera, Anieri M.; Amelung, Falk C; Mothes, Patricia.
In: Geochemistry, Geophysics, Geosystems, Vol. 17, No. 7, 01.07.2016, p. 2869-2883.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Volcano deformation survey over the Northern and Central Andes with ALOS InSAR time series
AU - Morales Rivera, Anieri M.
AU - Amelung, Falk C
AU - Mothes, Patricia
PY - 2016/7/1
Y1 - 2016/7/1
N2 - We use ALOS-1 Interferometric Synthetic Aperture Radar data spanning the period of 2007–2011 to obtain time-dependent ground deformation data over all of the volcanoes in Colombia, Ecuador, and Peru. We detect deformation on or near the proximity of Galeras, Reventador, Tungurahua, Guagua Pichincha, Sangay, and Cerro Auquihuato volcanoes, uncovering previously undocumented deformation in the latter three. Deformation is attributed to changes in pressurization of the volcanic systems (Galeras, Tungurahua, Guagua Pichincha, and Cerro Auquihuato), subsidence associated with flow deposits (Reventador), and flank creep (Sangay). Our models suggest that the pressure sources are located at depths of ∼1–6 km from the surface, indicating that the measurable deformation within our data is restricted to shallow magma chambers and hydrothermal systems.
AB - We use ALOS-1 Interferometric Synthetic Aperture Radar data spanning the period of 2007–2011 to obtain time-dependent ground deformation data over all of the volcanoes in Colombia, Ecuador, and Peru. We detect deformation on or near the proximity of Galeras, Reventador, Tungurahua, Guagua Pichincha, Sangay, and Cerro Auquihuato volcanoes, uncovering previously undocumented deformation in the latter three. Deformation is attributed to changes in pressurization of the volcanic systems (Galeras, Tungurahua, Guagua Pichincha, and Cerro Auquihuato), subsidence associated with flow deposits (Reventador), and flank creep (Sangay). Our models suggest that the pressure sources are located at depths of ∼1–6 km from the surface, indicating that the measurable deformation within our data is restricted to shallow magma chambers and hydrothermal systems.
KW - Andes
KW - InSAR time series
KW - volcano deformation
UR - http://www.scopus.com/inward/record.url?scp=84979202515&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84979202515&partnerID=8YFLogxK
U2 - 10.1002/2016GC006393
DO - 10.1002/2016GC006393
M3 - Article
AN - SCOPUS:84979202515
VL - 17
SP - 2869
EP - 2883
JO - Geochemistry, Geophysics, Geosystems
JF - Geochemistry, Geophysics, Geosystems
SN - 1525-2027
IS - 7
ER -