monitoring local/regional seismicity (north-eastern Caribbean; Sombrero seismic zone) monitoring volcanic activity (The Quill, Mt. Scenery) contributing to the Caribean Tsunami Warning system NA – Netherlands Antilles Seismic Network (since 2006)  KNMI (Netherlands Meteorological Institute)  MDNAA (Meteorological Service of the Netherlands Antilles and Aruba)

USGS

St. Eustatius St. Maarten Saba North

oil terminal last eruption ~ AD

last eruption ~ 1640 pyroclastic flows

Streckeisen STS-2 broad-band sensor

UPS - local support, but limited technical knowledge - air conditioned rooms - automatic processing SeisComP3 - manual review SeismicHandler

SABA SEUS SMRT

Real-Time seismic stations in the Caribbean region collected by KNMI / MDNAA using SC3

100 Hz 40 Hz minimum phase filter, causal linear phase filter, acausal

Willard interface

Quanterra Q330 filtering scheme causal: no ‘ringing’, reliable onset picking, waveform distortion acausal: possible ‘ringing’, no waveform distortion

ring buffer fifo’s high priority thread Linux RT-Linux DAC polling & plot network (SeedLink) socket ring buffer data handler notifier log-handler 40 Hz data dt = sec dataerrors drum recorder