The mid- and north-atlantic region has a sparse coverage with permanent broadband
stations. A better detection and localisation of sources is possible with permanent seismic
broadband arrays like Graefenberg array (GRF), NORSAR array (NOA) or the German
Regional Seismic Network (GRSN) and will be further improved. Therefore, a detection of
sources of

(1) earthquakes -with an extension to lower magnitudes-,
(2) swarm earthquakes -as an indicator for magmatic activity- and
(3) oceanic microseisms

is eligible. The new approach will consist of a real-time detection of surface waves (20s
-100s) and, thereafter, of an Array-Beam based moment tensor inversion. The frequency
range of interest is 1Hz - 0.20Hz for body waves, 0.20Hz - 0.05Hz for oceanic microseisms
and 0.05Hz - 0.01Hz for surface waves.
This PhD thesis contributes to a better understanding of the tectonics of the mid- and
north-atlantic ridge region:

(1) structure & seismicity of plate boundaries
(2) identification of swarm earthquakes
(3) quantification of released moment within transform faults & fracture zones
(4) domains of sources of oceanic microseisms.
Funding agency
Involved personal Tobias Müller-Wrana