CALAIS , Eric

GPS data collected in the Dominican Republic from 1994 to 2001 show that oblique convergence between the North American and Caribbean plates is partitioned between 5.2 ± 2 mm.yr−1 of dip‐slip reverse motion on the North Hispaniola thrust (approximately N‐S), and 12.8 ± 2.5 mm.yr−1 and 9.0 ± 9.0 mm.yr−1 of approximately E‐W left‐lateral...

Although often difficult to characterize, the relationship between a seismic rupture, its aftershock sequence, and cumulative subsurface or surface faulting or folding is an important challenge to modern seismology and seismotectonics. Among other benefits, it helps document fault length, slip, and magnitude relationships, reconstruct the...

The development of low-cost Raspberry Shake (RS) seismological stations capable of providing scientifically relevantseismological information in near-real time has enabled a Haitian citizen network to be set up as part of a participatoryseismology experiment that Started in July 2019. This network currently operates 12 RS instruments. These are...

On August 2021, a Mw 7.2 earthquake struck Haiti's southern peninsula, eleven years after the devastating Mw 7 January 12, 2010 earthquake that occurred near Port au Prince. This large event, called the Nippes earthquake, has been recorded locally by the citizen network composed of low-cost raspberry shake stations. A precise analysis of the...

Abstract Seismic monitoring in Haiti is currently provided by a mixed network of low-cost Raspberry Shake (RS) seismic stations hosted by citizens, and short-period and broadband stations located mainly in neighboring countries. The level of earthquake detection is constantly improving for a better spatio-temporal distribution of seismicity as...

The 14 August 2021 Mw 7.2 Haiti earthquake struck a decade after the devastating 2010 event within the Enriquillo Plantain Garden Fault Zone in the Southern peninsula of Haiti. Space geodetic results show that the rupture is composed of both left-lateral strike-slip and thrust motion, similar to the 2010 rupture, but aftershock locations from a...

ABSTRACT The 14 August 2021 Mw 7.2 Haiti earthquake struck 11 yr after the devastating 2010 event within the Enriquillo Plantain Garden (EPG) fault zone in the Southern peninsula of Haiti. Space geodetic results show that the rupture is composed of both left-lateral strike-slip and thrust motion, similar to the 2010 rupture; but aftershock...

We present new results from the MARADJA'03 cruise depicting the geological structures offshore central and western Algeria. Using swath bathymetry and seismic reflection data, we map and discuss the offshore limits of the Internal Zones corresponding to relics of the AlKaPeCa domain that drifted and collided the African plate during the...

International audience

Continental rifts begin and develop through repeated episodes of faulting and magmatism, but strain partitioning between faulting and magmatism during discrete rifting episodes remains poorly documented. In highly evolved rifts, tensile stresses from far-field plate motions accumulate over decades before being released during relatively short...

Since July 2019, The Ayiti-seismes citizen network (ASCN) has been detecting and locating, in real time, earthquakes occurring in Haiti of magnitude ≥ 2.5. ASCN is based on both Seiscomp3 modules and Géoazur in-house software, and uses seismic signals from (1) low-cost, low-maintenance Raspberry Shake (RS) instruments installed in Haiti and (2)...