Geoscience Reference
In-Depth Information
Table 2.
(Continued)
Site name
q> Latitude (in Degrees)
A. Longitude (in Degrees)
DBEY
38.13700
26.83000
SFRH
38.20700
26.82100
BIST
38.34200
27.18100
CCEK
38.07659
26.96351
In summary, the locations of the station points of the microgeodetic network are
distributed on both sides of the fault. Moreover, some stations are located very near to
the fault trace and some others as far as 20 km away from the fault trace, according to
the distribution of the surface deformation with respect to the distance from the fault
trace.
The network is compatible with the studies performed in fi rst order network design
studies. Generally the lines connecting GPS stations are in alignment with the direc-
tion of extension or compression, the angles of triangles composed by GPS stations are
generally between 30 and 130 degrees (Wu et al., 2003). On the other hand, some addi-
tional points that were added to the network like GMDR, KG07, KG06, and KG02 do
not satisfy the above rules. However, those points were selected deliberately because
of the very complex structure of the southern segment of the faults, composed of sev-
eral pieces. The KG02 was selected because we desired to evaluate the results in terms
of short and long baselines and for various perpendicular distances to the fault trace.
Moreover, a block exists in the middle of Karaburun peninsula that has a differ-
ential motion at a rate of 3 - 5 ± 1 mm/year to the east and 5 - 6 ± 1 mm/year to the
south (Aktug and Kilicoglu, 2006). Therefore, 14 points were thought to be enough for
determining the slip rate, which is not as small, as stated by Gerasimenko et al. (2000).
The network designed to be suitable for future studies which have a possibility to
enlarge the project area, so the suggestions mentioned in Blewitt (2000) are taken into
consideration. The sites were also selected according to the transportation possibilities
and visibility of open sky. The reconnaissance performed in the region made it easy to
defi ne those site properties.
RESULTS AND DISCUSSION
This study focused on the idea of dealing with a crustal deformation monitoring
project on a particular fault which has a high-seismic risk using geodetic techniques.
Moreover, this study attempted to establish interactions between geosciences and ge-
odesy in terms of deformation monitoring projects. The chapter explains the tectonics
of the eastern Mediterranean and Aegean Region in general and the tectonics of Izmir
and its surrounding area in more detail. Important faults are underlined from a recent
study performed by General Directorate of Mineral Research and Exploration in 2005
(Emre et al., 2005). Some projects that have geodetic components were also investi-
gated (Aktug and Kilicoglu, 2006; McClusky et al., 2000; Reilinger et al., 2000, 2006)
to focus on the movements of Anatolia and western Turkey.
