Hierro

Observations of Deformation

Volcano number:383020
Region:
Country:Spain
Geodetic measurements?Yes
Deformation observation?Yes
Measurement method(s):InSAR, GPS - continuous, GPS - campaign, Tiltmeter
Inferred cause(s) of deformation:Magmatic
Characteristics of deformation:

Deformation is associated with a period of unrest and eruption during 2011 to 2012. On 12 October 2011, a submarine NW-SE fissural eruption commenced.
InSAR results reveal two spatially distinct shallow (crustal) magma reservoirs, a deeper central source (9.5 ± 4.0 km), and a shallower magma reservoir at the flank of the southern rift (4.5 ± 2.0 km; González et al., 2013). The intense deformation pattern is indicative of an expansion source located offshore at Mar de Las Calmas.

Reference(s):López, C., Blanco, M. J., Abella, R., Brenes, B., Cabrera Rodríguez, V. M., Casas, B., & Villasante‐Marcos, V. (2012). Monitoring the volcanic unrest of El Hierro (Canary Islands) before the onset of the 2011–2012 submarine eruption. Geophysical Research Letters, 39(13).
González, P. J., Samsonov, S. V., Pepe, S., Tiampo, K. F., Tizzani, P., Casu, F., ... & Sansosti, E. (2013). Magma storage and migration associated with the 2011–2012 El Hierro eruption: Implications for crustal magmatic systems at oceanic island volcanoes. Journal of Geophysical Research: Solid Earth, 118(8), 4361-4377.
Arnoso, J., F. G. Montesinos, M. Benavent, and E. J. Vélez (2012), The 2011 volcanic crisis at El Hierro (Canary Islands): monitoring ground deformation through tiltmeter and gravimetric observations, Geophys. Res. Abstr., 14, EGU2012–5373.
Smithsonian Institution Global Volcanism Program
http://www.volcano.si.edu/volcano.cfm?vn=383020
Location:27.73, -18.03
REST API endpoint (JSON):https://comet.nerc.ac.uk/wp-json/volcanodb/v1/volcano/1287