PAGER - M 6.1 - SUNDA STRAIT, INDONESIA

Alert Version: 3Friday, October 16th, 2009 at 09:52:52 UTCLocation: 6.6° S, 105.2° EDepth: 51kmEvent Id: US2009MVA4Created: 1 hour, 12 minutes after earthquake.

Overall, the population in this region resides in structures that are vulnerable to earthquake shaking, though some resistant structures exist. A magnitude 6.8 earthquake 213 km Northwest of this one struck Indonesia on February 15, 1994 (UTC), with estimated population exposures of 21,000 at intensity VIII and 672,000 at intensity VII, resulting in an estimated 207 fatalities. On July 17, 2006 (UTC), a magnitude 7.7 earthquake 378 km Southeast of this one struck Indonesia, with estimated population exposures of 10,338,000 at intensity V and 48,867,000 at intensity IV, resulting in an estimated 665 fatalities. Recent earthquakes in this area have caused landslides that may have contributed to losses.

Exposure Summary

Estimated Population Exposed to Earthquake Shaking

Est. Modified Mercalli Intensity	Est. Population Exposure	Perceived Shaking	Potential Structure Damage
Est. Modified Mercalli Intensity	Est. Population Exposure	Perceived Shaking	Resistant	Vulnerable
X	0	Extreme	V. Heavy	V. Heavy
IX	0	Violent	Heavy	V. Heavy
VIII	0	Severe	Moderate/Heavy	Heavy
VII	6k	Very Strong	Moderate	Moderate/Heavy
VI	165k	Strong	Light	Moderate
V	1,645k	Moderate	V. Light	Light
IV	30,788k	Light	none	none
II-III	25,593k*	Weak	none	none
I	--*	Not Felt	none	none

*Estimated exposure only includes population within calculated shake map area

Population Exposure
Population per ~1 sq. km. from LandScan

Selected Cities Exposed

MMI	City	Pop.
IV	Labuhan	34k
IV	Serang	165k
IV	Pandegelang	92k
IV	Rangkasbitung	127k
IV	Tanjungkarang-Telukbetung	800k
IV	Kresek	110k
III	Depok	1,198k
III	Tangerang	1,372k
III	Bekasi	1,520k
III	Jakarta	8,540k
II	Bandung	1,700k

Shaking Intensity

Full City Exposure List

MMI	City	Population
IV	Labuhan	34k
IV	Serang	165k
IV	Pandegelang	92k
IV	Rangkasbitung	127k
IV	Tanjungkarang-Telukbetung	800k
IV	Kresek	110k
IV	Pelabuhanratu	43k
IV	Curug	191k
IV	Cikupa	174k
III	Pasarkemis	154k
III	Parung	194k
III	Serpong	80k
III	Pamulang	175k
III	Metro	150k
III	Teluknaga	128k
III	Ciputat	208k
III	Sawangan	114k
III	Depok	1,198k
III	Tangerang	1,372k
III	Sepatan	118k
III	Ciampea	207k
III	Citeureup	110k
III	Cibinong	189k
III	Cicurug	89k
III	Cileungsi	202k
III	Terbanggi-besar	53k
III	Kotabumi	42k
III	Caringin 2	92k
III	Bogor	800k
III	Bekasi	1,520k
III	Sukabumi	276k
III	Cikarang	106k
III	Jakarta	8,540k
III	Ciranjang-hilir	78k
III	Rengasdengklok	201k
III	Cikampek	146k
III	Soreang	151k
III	Margahayu	83k
III	Purwakarta	216k
III	Padalarang	125k
II	Banjar	37k
II	Pamanukan	114k
II	Baturaja	135k
II	Pameungpeuk	48k
II	Banjaran	165k
II	Cimahi	494k
II	Cileunyi	111k
II	Wanaraja	26k
II	Paseh	126k
II	Lembang	183k
II	Sumedang Utara	207k
II	Singaparna	49k
II	Lahat	66k
II	Tanjungagung	53k
II	Rajapolah	40k
II	Pagaralam	70k
II	Bandung	1,700k

Downloads

PAGER results are generally available on the Internet within 30 minutes of the earthquake’s occurrence. However, information on the extent of shaking will be uncertain in the minutes and hours following and earthquake and typically improves as additional sensor data and reported intensities are acquired and incorporated into models of the earthquake's source. Users of PAGER estimates should account for uncertainty and always seek the most current PAGER release for any earthquake.