Hertali

Observations of Deformation
Explore Sentinel-1 imagery

Volcano number:	221171
Region:	Africa and Red Sea
Country:	Ethiopia
Geodetic measurements?	Yes
Deformation observation?	Yes
Measurement method(s):	InSAR
Duration of observation:	1997-2000, 2004-2010
Inferred cause of deformation:	Uncertain
Characteristics of deformation:	Between June and December 2007 3-5 cm of uplift was observed at Halebeti, a volcanic edifice names in Biggs et al. (2011), located ~10 km south of Hertali. The deformation pattern is sharply cut off on the western side. Biggs et al. (2011) suggests that this indicates fault-controlled deformation, or an intrusion associated with dipping structure. The deformation pattern has been fit by a sill 5.8 x 8 km, at a depth of 2.7-8.8 km. Following December 2007 5.4 cm of subsidence occurred over >1000 days, after which there is no data.
References:	'Biggs, J., I. D. Bastow, D. Keir, and E. Lewi (2011), Pulses of deformation reveal frequently recurring shallow magmatic activity beneath the Main Ethiopian Rift, Geochem. Geophys. Geosyst., 12, Q0AB10, doi:10.1029/2011GC003662.'
Location:	40.33, 9.78

This portal was developed by members of the NERC Centre for the Observation and Modeling of Earthquakes, Volcanoes & Tectonics (COMET) at the Universities of Leeds and Bristol, and has been supported by COMET, NERC Impact Acceleration Awards from the University of Bristol, a NERC Innovation Award (“Making Satellite Volcano Deformation Analysis Accessible”, NE/S013970/1, PI: Juliet Biggs) , by independent research fellowships to Susanna Ebmeier (Leverhulme: ECF-2015-232 and NERC: NE/R015546/1). EUROVOLC (an EU-funded project) and DEEPVOLC (funded by the European Research Council, 866085, PI: Andy Hooper).