The Geodynamic Observatory Moxa/Germany: Instrumentation and Purposes.
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Accession number;01A0565388
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| Title;The Geodynamic Observatory Moxa/Germany: Instrumentation and Purposes. |
| Author;
JAHR T
(Inst. Geosciences, Jena, Deu)
JENTZSCH G
(Inst. Geosciences, Jena, Deu)
KRONER C
(Inst. Geosciences, Jena, Deu)
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Journal Title;Journal of the Geodetic Society of Japan
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Journal Code:G0199A
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ISSN:0038-0830
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VOL.47;NO.1;PAGE.34-39(2001)
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| Figure&Table&Reference; |
| Pub. Country;Japan |
| Language;English |
| Abstract;Since 1997 the seismological station, Moxa, has been reconstructed and extended to become a geodynamic broadband observatory. Seismological observations are carried out with a seismometer STS-2(3-component) new supplemented with a three component STS-1, a long period seismometer, which usually operates at up to 360 seconds but is also sensitive to tidal signal. The original east-west and north-south quartz strainmeters were reconstructed and equipped with new inductive sensor systems. A laser strainmeter, orientated from north-west to south-east, has also been newly installed. The beam runs through a horizontal borehole. All three components show clearly the expected tidal strain variations. Cavity effects seem to be small. In front of the observatory buildings three boreholes, two 50 meter and one 100 meter, were drilled and first test recordings with the ASKANIA borehole tiltmeter were carried out. As an optical estimation of the pendulum azimuth was not possible, a new method was developed by use of seismological observations from well-known locations. Signals and noise recorded by the different sensor systems were investigated in particular not only for seismological frequencies, but also for very long period. (author abst.) |
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