SR 8.8 earthquake in Chile caused shifts Concepcion City 3 meters. Similar geographical shift occurred in Aceh after the earthquake of 9.1 SR December 26, 2004.
"Salaut Island in North Aceh Besar shift 5 yards. The island is the closest to the epicenter," said Head of the Central of Geodesy and Coordination Geodinamika Bakosurtanal, Cecep Surbaya to AFP, Tuesday (9/3/2010).
The shift was seen from a global positioning monitoring stations (GPS) geodetic Bakosurtanal. "From the change of coordinates that we see, for example used in the coordinates X, X2 now. Well between X and X2's no difference, that is 5 meters," he explained.
Cecep explained, Bakosurtanal have a pillar of the control point measuring 30 X 30 X 50 cm to 50 cm 1-1.5 m planted in the soil and the soil surface 20-25 cm. Initial measurements were conducted in 1992 in Banda Aceh, Meulaboh around the coast of North Sumatra to Port Malahayati.
3rd Sunday after the earthquake in Aceh, Bakosurtanal return measure and found a shift in the elastic crust. Cities and towns in Aceh shifted to the west.
"The surface of the ground shifted approximately 13 cm and then continue to the north, the city of Lhokseumawe and Langsa increased (shifted) 40-60 cm, the coast of Meulaboh and Aceh Besar (shifted) to 3 meters," he explained.
Source: Detik.com
