"SUMATERA'S SEAQUAKES AND LANDQUAKES RELATIONSHIP"
Listya Dewi Rifai1, I Putu Pudja2
ABSTRACT
Generally, Sumatera devided by 2 resources of tectonic earthquake, consist of subduction zone
along the sea and subduction along fracture at Sumatera fault system in the land. As the begining
study for observe interaction of earthquake from both of earthquake zone, do approximate to
analyse the earthquake according P-axis of focal mechanism, stretches of time, and distance with
take sample from a number of felt earthquake data that occur in the sea and the land of Sumatera at
2007 - 2009. After analyse P-axis from result of focal mechanism plot, distance, and time range,
indicated that earthquake occur in the sea trigger earthquake occur in the land. We found that before
earthquake 19 Juny 2008 and 1 October 2009, a number of earthquake in the sea have P-axis
direction inclined turned to earthquake in the land.
Key words: P-axis, earthquake in the sea, earthquake in the land.
1),2) BMKG, Indonesia
Listya Dewi Rifai1, I Putu Pudja2
ABSTRACT
Generally, Sumatera devided by 2 resources of tectonic earthquake, consist of subduction zone
along the sea and subduction along fracture at Sumatera fault system in the land. As the begining
study for observe interaction of earthquake from both of earthquake zone, do approximate to
analyse the earthquake according P-axis of focal mechanism, stretches of time, and distance with
take sample from a number of felt earthquake data that occur in the sea and the land of Sumatera at
2007 - 2009. After analyse P-axis from result of focal mechanism plot, distance, and time range,
indicated that earthquake occur in the sea trigger earthquake occur in the land. We found that before
earthquake 19 Juny 2008 and 1 October 2009, a number of earthquake in the sea have P-axis
direction inclined turned to earthquake in the land.
Key words: P-axis, earthquake in the sea, earthquake in the land.
1),2) BMKG, Indonesia
Seaquakes and landquake relations