Research > GPS
Kos – Yiali - Nisyros
Volcanic Field of Kos-Yiali-Nisyros islands is located to the SE part
of the Hellenic Volcanic Arc. Together with the Santorini System, they
constitute the two most major volcanic systems in the Aegean Sea.
the years 1996-1997 there was an earthquake crisis causing serious
damages in Nisyros Island. A GPS network was established in June of
1997 consisting of nineteen (19) stations to study the ground
deformation associated with probable upward magma motions.
1997 the GPS network was remeasured several times:
and December 1997
and October 1998
ground deformation has been observed in Nisyros Island due to the magma
influx at a magma chamber, at a depth of about 7 km, during the seismic
crisis of 1996-1997, initiated by the previous occurrence of deep
earthquakes in the broader area (Lagios et al. 2005).
network in Kos - Nisyros Islands
network in the Kos-Yiali-Nisyros Volcanic Field
(black arrows) and calculated (red arrows) horizontal deformation
vectors for the period 1997-2001 using the Mogi Source Model at a depth
of 7.5 km with 65 m expanding source parameter. Additionally to the
Mogi Model the faults (marked with Red) in the NW and NE part of the
island have been modelled using the RNGCHN programme (Feigl and Dupre
1999;Computers and Geosciences, 25 (6) pp. 695-704 ):
researc project was funded by the European Union, PROJECT IST
Lagios, E., Sakkas,
V., Parcharidis, I., & Dietrich,
V. (2005). Ground deformation of Nisyros
for the period 1995-2002: Results from DInSAR and DGPS observations.
Bulletin of Volcanology, 68(2), 201-214.