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| Titel |
Estimation of strain accumulation of densification network in Northern Marmara Region, Turkey |
| VerfasserIn |
I. Deniz, H. Ozener |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 10, no. 10 ; Nr. 10, no. 10 (2010-10-08), S.2135-2143 |
| Datensatznummer |
250008446
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| Publikation (Nr.) |
 copernicus.org/nhess-10-2135-2010.pdf |
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| Zusammenfassung |
| Strain analysis is one of the methods for the kinematic analysis of the
repeated geodetic measurements. In order to derive strain accumulation in
Marmara Region, different institutions carried out several Global Positioning
System (GPS) campaigns in 1999 and 2006. The GPS campaigns were performed on
the geodetic network which cover the provinces: Kirklareli, Tekirdag, Bursa,
Bilecik and Adapazari. Then, the displacements of the network stations were
estimated by means of analysing the GPS space geodetic measurements. For the
assessment of the datum differences between 1999 and 2006 on the station
coordinates, 3-D Helmert transformation was applied to the coordinates
of each 1999 and 2006 datum. Then, a global test was introduced to determine
the significant deformation which occurred in the geodetic GPS network.
Strain accumulation with a finite element model was then computed. First,
triangles were constructed for the whole network with the Delaunay method.
Hereafter, strain parameters were calculated for each triangle. Maximum
values of strain accumulation were found around the surroundings of Marmara
Ereglisi and Izmit, whereas minimum values are around Istanbul. |
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