TY  - JOUR
A1  - Dahm, Torsten
A1  - Heimann, Sebastian
A1  - Funke, Sigward
A1  - Wendt, Siegfried
A1  - Rappsilber, Ivo
A1  - Bindi, Dino
A1  - Plenefisch, Thomas
A1  - Cotton, Fabrice Pierre
T1  - Seismicity in the block mountains between Halle and Leipzig, Central Germany
BT  - centroid moment tensors, ground motion simulation, and felt intensities of two M approximate to 3 earthquakes in 2015 and 2017
JF  - Journal of seismology
N2  - On April 29, 2017 at 0:56 UTC (2:56 local time), an M (W) = 2.8 earthquake struck the metropolitan area between Leipzig and Halle, Germany, near the small town of Markranstadt. The earthquake was felt within 50 km from the epicenter and reached a local intensity of I (0) = IV. Already in 2015 and only 15 km northwest of the epicenter, a M (W) = 3.2 earthquake struck the area with a similar large felt radius and I (0) = IV. More than 1.1 million people live in the region, and the unusual occurrence of the two earthquakes led to public attention, because the tectonic activity is unclear and induced earthquakes have occurred in neighboring regions. Historical earthquakes south of Leipzig had estimated magnitudes up to M (W) ae 5 and coincide with NW-SE striking crustal basement faults. We use different seismological methods to analyze the two recent earthquakes and discuss them in the context of the known tectonic structures and historical seismicity. Novel stochastic full waveform simulation and inversion approaches are adapted for the application to weak, local earthquakes, to analyze mechanisms and ground motions and their relation to observed intensities. We find NW-SE striking normal faulting mechanisms for both earthquakes and centroid depths of 26 and 29 km. The earthquakes are located where faults with large vertical offsets of several hundred meters and Hercynian strike have developed since the Mesozoic. We use a stochastic full waveform simulation to explain the local peak ground velocities and calibrate the method to simulate intensities. Since the area is densely populated and has sensitive infrastructure, we simulate scenarios assuming that a 12-km long fault segment between the two recent earthquakes is ruptured and study the impact of rupture parameters on ground motions and expected damage.
KW  - Deep crustal intraplate seismicity
KW  - Centroid moment tensor of M approximate to 3 earthquakes
KW  - Observed and simulated ground motions
Y1  - 2018
U6  - https://doi.org/10.1007/s10950-018-9746-9
SN  - 1383-4649
SN  - 1573-157X
VL  - 22
IS  - 4
SP  - 985
EP  - 1003
PB  - Springer
CY  - Dordrecht
ER  - 
TY  - GEN
A1  - Dahm, Torsten
A1  - Heimann, Sebastian
A1  - Funke, Sigward
A1  - Wendt, Siegfried
A1  - Rappsilber, Ivo
A1  - Bindi, Dino
A1  - Plenefisch, Thomas
A1  - Cotton, Fabrice Pierre
T1  - Correction to: Seismicity in the block mountains between Halle and Leipzig, Central Germany: centroid moment tensors, ground motion simulation, and felt intensities of two M approximate to 3 earthquakes in 2015 and 2017 (vol 22, pg 985, 2018)
T2  - Journal of seismology
Y1  - 2018
U6  - https://doi.org/10.1007/s10950-018-9773-6
SN  - 1383-4649
SN  - 1573-157X
VL  - 22
IS  - 6
SP  - 1669
EP  - 1671
PB  - Springer
CY  - Dordrecht
ER  -