TY  - JOUR
PY  - 2014//
TI  - The 2012/2014 swarmquakes of Jaen, Spain: a working hypothesis involving hydroseismicity associated with the hydrologic cycle and anthropogenic activity
JO  - Natural hazards
A1  - Doblas, Miguel
A1  - Youbi, Nasrrddine
A1  - Doblas, Julia De Las
A1  - Galindo, Antonio Jesús
SP  - 1223
EP  - 1261
VL  - 74
IS  - 2
N2  - A total of 2,300 swarmquake-type seisms have been striking the Torreperogil-Sabiote Hill (TSH) in southern Spain (Jaen) from October 2012 to the present, involving a major seismic crisis with six subseries until May 2013 (TSH seismic series, TSHS), followed by seven final series (FS). Two mild premonitory events occurred nearby in 2010-2011. Several evidences suggest cause-effect relationships between water and seismicity at the TSH: (1) The characteristics of seisms with a vast majority of ill-defined shallow/small events, spatial/temporal variations of the better constrained diffuse swarmquakes, increasing seismic velocities preceding stronger events, marked periodicities, abundant hydro-tremors, etc. (2) A series of spatial/temporal relationships between water and seismicity: Time lags between rainfall/reservoir peaks and seismic peaks; spatial links between swarmquakes and several factors (underground hydrogeology, reservoirs, etc.); etc. (3) From May 2013 to January 2014 evolution of rainfall and FS seismicity declined drastically at the same time. We suggest a hydroseismic hypothesis for TSH swarmquakes resulting from a complex series of cumulative factors: (1) A million-years natural setting involving geological, hydrogeological, geomorphological and tectonic elements. (2) A decades-long series of natural and anthropogenic factors are as follows: the 2012/2013 meteorological change, the massive overexploitation of the confined aquifers and alternating impoundment/emptying of the Giribaile reservoir.<p />  <p>Language: en</p>
LA  - en
SN  - 0921-030X
UR  - http://dx.doi.org/10.1007/s11069-014-1242-0
ID  - ref1
ER  -