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namibia |
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measuring microseismic noise in Namibia...
purpose: obtain uncontaminated microseism timeseries for nonlinear timeseries analysis, see what's there...
measurements will take place from Aug. 15 - Sept. 15 2002 in cooperation with the
Geological Survey of Namibia.
We were able to register from Aug. 23 to Sept. 19 and first QC indicates data of exceptional quality (extremely low artificial noise) - details to follow here soon...
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Literature: |
The Erongo!
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Cloos, H., 1919: Der Erongo: Ein vulkanisches Massiv im Tafelgebirge des Hererolandes und seine Bedeutung für die Raumfrage plutonischer Massen. Beiträge zur Erforschung der deutschen Schutzgebiete, Heft 17.
Correig, A. M., Urquizu, M., 2002: Some dynamical characteristics of microseism time-series, Geophys. J. Int., 149, 3, 589 - 598.
Wigang, M., Emmermann, R., 2002: Geology of the Erongo Complex. To appear in Sammlung Geologischer Führer, Schweizerbart'sche Verlagsbuchhandlung.
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Simplified geological map of the Erongo. The Erongo Complex is an old volcano whose intrusive and subvolcanic complexes formed in the Cretaceous. Some intrusions reach deep into the crust and should serve well as antennas for microseismic signals. Indicated is the farm Etiromund where a seismometer will be deployed. Many thanks to Markus Wigand for the original map. |
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Photos of installation and site. |
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Final inspection before departure.
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An almost perfect natural hole in a huge granite outcrop. Only insulation is still missing (and batteries of course).
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OK, testing before closing the hole...
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Final touches.
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Thorny branches keep baboons away - this is no joke!
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Some days later - is it recording something? Or: Listening to the Earth (this is boring).
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Some related figures from literature |
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Map of coastal NW-Namibia showing location of experiments by NAMIBIA working group (Zweijahresbericht GFZ Potsdam, 1998/1999; all figures).
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LANDSAT-TM mosaic image of coastal NW-Namibia.
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Interpreted 2-D crustal depth sections along MAMBA1/2.
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Basaltic dikes, cretaceous intrusive complexes incl. Erongo and major fault zones.
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LANDSAT image of Erongo.
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