A tectonic earthquake measuring 4.4 on the Richter Scale (SR) jolted Banda Aceh, provincial capital of Nanggroe Aceh Darusalam (NAD), and surrounding areas, at about 10.12 local time on Monday. The quake, however, did not cause panic among residents of Indonesia's most western province.
The temblor's magnitude was too small and therefore only some people could feel it, head of the Mata Ie Meteorology and Geophysics Station, Syahnan told Antara here on Monday. He said the quake was located at 4.93 degrees northern latitude and -95.8 degrees eastern longitude, or about 52 km southwest of Sigli city, at a depth of 19 km below sea level. It was the third temblor to have hit NAD province in May 2008.
The quake's epicenter lay in Malacca Strait waters, he said. Another tectonic quake with a magnitude of 6.0 on the Richter Scale (SR) also shook the southern coastal region of West Sumatra on Sunday evening at about 19:17 with the tremors felt in Padang, West Sumatra's provincial capital.
Sumarsono, the head of the Meteorology and Geophysics Agency (BMG) in Padang Panjang, said the quake's epicenter was about 73 km southeast of Muko-muko (Bengkulu) at a depth of 15 km below sea level. The quake was located at 3.16 degrees Southern Latitude and 101.45 degrees Eastern Longitude.
The temblor was clearly felt in the southern coastal areas of West Sumatra, but did not have the potential to cause a tsunami, he said. Early on Monday, a tectonic earthquake measuring 5.1 on the Richter Scale occurred at 134 km northwest of Saumlaki, Maluku.
The earthquake's epicenter was located at 6.76 degrees southern latitude and 131.41 degrees eastern longitude, at a depth of 49 km below sea level, according to information from BMG here on Monday.
On Sunday (May 18), Indonesia was hit by two earthquakes respectively in Bengkulu and North Sumatra Provinces.
In Bengkulu, also on Sumatra Island, a 6-magnitude earthquake shook 73 km southeast of Mukomuko. The quake's epicenter was located at 3.15 degrees southern latitude and 101.45 degrees eastern longitude, at a depth of 15 km below sea level.
thejakartapost
Magnitude 5.9
Date-Time
* Monday, May 19, 2008 at 14:26:45 UTC
* Monday, May 19, 2008 at 09:26:45 PM at epicenter
Location 1.646°N, 99.181°E
Depth 11.6 km (7.2 miles) (poorly constrained)
Region NORTHERN SUMATRA, INDONESIA
Distances
*45 km (25 miles) E of Sibolga, Sumatra, Indonesia
*220 km (140 miles) SSE of Medan, Sumatra, Indonesia
*325 km (200 miles) WSW of KUALA LUMPUR, Malaysia
*1200 km (750 miles) NW of JAKARTA, Java, Indonesia
JAKARTA, Indonesia -- A powerful 6.1-magnitude earthquake shook the western coast of Indonesia's North Sumatra province on Monday, the meteorology office here said.
The quake struck at 9:26 p.m. (1426 GMT) at a depth of 10 kilometers (six miles) in a mountainous area 35 kilometers northeast of Padang Sidempuan, meteorologists said.
There were no immediate reports of damage or casualties.
A resident of Padang Sidempuan, Pardomuan Bangun, contacted by telephone, said that the quake was strongly felt in town, causing people to rush out of buildings in panic, some shouting.
"But so far I have not seen or heard of any serious damage or victims," Bangun said.
The US Geological Survey clocked the quake at 5.9 magnitude.
Indonesia was the nation worst hit by the quake-triggered Asian tsunami in December 2004, which killed 168,000 people in the country's Aceh province alone.
The Indonesian archipelago sits on the so-called Pacific Ring of Fire where continental plates meet and cause frequent seismic and volcanic activity.
Bron: inquirer.net