DOI: 10.1007/s00531-012-0859-z
论文题名: Combined geological and gravimetric mapping and modelling for an improved understanding of observed high-resolution gravity variations: A case study for the Global Geodynamics Project (GGP) station Moxa, Germany
作者: Kasch N. ; Naujoks M. ; Kley J. ; Jahr T.
刊名: International Journal of Earth Sciences
出版年: 2013
卷: 102, 期: 5 起始页码: 1257
结束页码: 1270
语种: 英语
英文关键词: Banded slates
; Bouguer anomaly
; Geological modelling
; Gravimetric modelling
; Kulmfacies
; Superconducting gravimetry
; Tectonics
Scopus关键词: Bouguer anomaly
; geodynamics
; gravimetry
; gravity anomaly
; mapping
; satellite data
; three-dimensional modeling
; Germany
; Moxa
; Thuringia
英文摘要: Geodynamic observatories around the globe continuously monitor signals like gravity, tilt and strain as a function of time. However, global signals are often masked by local effects, caused by the direct surroundings of the station, including the local geological setting. This link is well established for superconducting gravimeters (SG) that observe the gravity field variations at very high resolution. An enhancement of the SG time series by the application of local correction is exemplarily shown here in a very practicable procedure for the Geodynamic Observatory Moxa, Germany. We show how the combination of geological and gravimetrical mapping and modelling around Moxa results in a significant correction of the original gravity data, as can be proven by comparison with the satellite-derived gravity field. Detailed geological mapping of the observatory surroundings, including measurements of fold axes, foliations and joints, was the basis of the present study. The fold structure in the area of interest was interpreted by geometrical 3D modelling. The complete representation of different rock types in space also provides a better understanding of the local hydro-geological situation. Using a combination of the 3D geological model with the high-resolution Bouguer map of the observatory surroundings, we developed a 3D density model. This model enables the correction of small gravity effects caused by mass variations close to the SG, in particular local hydro-geological mass changes. Thus, the procedure presented here, based on a close connection of geology and gravimetry, is a powerful tool for the reduction of local gravity effects on SG recordings. It should be applicable to SG stations worldwide, where similar hydrologically driven mass changes can be assumed. © 2013 Springer-Verlag Berlin Heidelberg. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878921252&doi=10.1007%2fs00531-012-0859-z&partnerID=40&md5=afdb7ad459a93762ae5076bb7c09129a
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70533
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Institute of Geosciences, Friedrich Schiller University Jena, Burgweg 11, 07749 Jena, Germany
Recommended Citation:
Kasch N.,Naujoks M.,Kley J.,et al. Combined geological and gravimetric mapping and modelling for an improved understanding of observed high-resolution gravity variations: A case study for the Global Geodynamics Project (GGP) station Moxa, Germany[J]. International Journal of Earth Sciences,2013-01-01,102(5)