Establishment of a gravity calibration baseline with the constrain of absolute gravity measurements after 17 August 1999 Izmit earthquake in Marmara region, Turkey


DOĞAN U. , Ergintav S., ARSLAN G., Demir D. , KARABOCE B., BILGIC E., et al.

ACTA GEODAETICA ET GEOPHYSICA, cilt.48, ss.377-388, 2013 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 48 Konu: 4
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1007/s40328-013-0033-5
  • Dergi Adı: ACTA GEODAETICA ET GEOPHYSICA
  • Sayfa Sayısı: ss.377-388

Özet

We described the first results of an on-going study of absolute gravity changes after the 17 August 1999 Izmit earthquake in Marmara region. Repeated absolute gravity measurements were carried out six stations with an A10 absolute gravimeter from 2009 to 2011 in the region. A gravimetric calibration baseline (of the range of about 415 milliGal (mGal), 1 mGal=10(-5) ms(-2)) was established in the region for the purposes of the calibration of the relative gravimeters. The absolute gravity measurements, repeated twice a year (October, June), can resolve gravity changes with a precision better than 5 microGal (mu Gal)/yr interval.