Masaya

Volcano number:344100
Region:Mexico and Central America
Country:Nicaragua
Geodetic measurements?Yes
Deformation observation?Yes
Measurement method(s):InSAR
Duration of observation:2007-2010
Inferred cause of deformation:Faulting/tectonics
Characteristics of deformation:

ALOS InSAR measurements from 2007-2010 recorded 4cm/yr subsidence at Masaya, attributed to motion on a ring fault around the edge of the caldera (Caravantes, 2013).

No addition deformation was detected within the caldera (detection threshold 1.3 cm/yr) during a regional survey of Central American volcanoes (Ebmeier et al., 2013).

Reference:Geophysical constraints on the structural evolution and hazards of volcano Masaya, Nicaragua . PhD Thesis. Open University, 2013.
Reference:Ebmeier, S. K., J. Biggs, T. A. Mather, and F. Amelung (2013), On the lack of InSAR observations of magmatic deformation at Central American volcanoes, J. Geophys. Res. Solid Earth, 118, 2571–2585, doi:10.1002/jgrb.50195.
Location:-86.161, 11.984

View of Masaya from the east caldera rim. Photo: Jaime Incer