M 8.4 - SOUTHERN SUMATRA, INDONESIA

Wednesday, September 12, 2007 at 11:10:26 UTC
Location: 4.5°S 101.4°E Depth: 30km

Summary

Estimated Population Exposed to Earthquake Shaking

Est. Modified Mercalli Intensity	Est. Population Exposure (k = x1000)	Perceived Shaking	Potential Structure Damage
Est. Modified Mercalli Intensity	Est. Population Exposure (k = x1000)	Perceived Shaking	Resistant	Vulnerable
X	0	Extreme	V. Heavy	V. Heavy
IX	0	Violent	Heavy	V. Heavy
VIII	63k	Severe	Moderate/Heavy	Heavy
VII	1,620k	Very Strong	Moderate	Moderate/Heavy
VI	3,215k	Strong	Light	Moderate
V	9,036k	Moderate	V. Light	Light
IV	52,013k*	Light	None	None
II-III	59,410k*	Weak	None	None
I	--*	Not Felt	None	None

*Estimated exposure only includes population within the map area.

Population Exposure

Population per ˜1 square km from Landscan 2005

Selected City Exposure

MMI	City	Population
VII	Curup	46k
VII	Sungaipenuh	95k
VI	Pagaralam	70k
VI	Bengkulu	309k
IV	Palembang	1441k
IV	Jakarta	8540k
IV	Singapore	3547k
IV	Tangerang	1372k
IV	Bekasi	1520k
III	Kuala Lumpur	1453k
III	Bandung	1699k

Shaking Intensity

MMI

Users should consider the preliminary nature of this information and check for updates as additional data becomes available. Population exposure estimates are NOT a direct estimate of earthquake damage; comparable shaking will result in significantly lower losses in regions with well built structures than in regions with vulnerable structures. Overall, structures in this region are vulnerable to earthquake shaking, though some resistant structures exist. A magnitude 6.3 earthquake struck the Yogyakarta, Indonesia region on May 26, 2006 (UTC), with estimated population exposures of 590,000 at intensity IX or greater and 2.4 million at intensity VIII, resulting in 5,749 deaths. Recent earthquakes in this area have also triggered tsunami, landslide and liquefaction hazards that have contributed to losses.

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 an 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 exposure estimates should account for uncertainty and always seek the most current PAGER release for any earthquake.

Maps

[Population | Shakemap]

Map of MMI contours plotted over population per ˜1 square km (see gray scale bar on top of map). The regions of integer MMI values are separated by the thick contour lines and labeled with Roman numerals. The total population exposure to a given MMI value is obtained by summing the population between the thick contour lines. This total is shown in population exposure table.

Map of shaking intensity. This map shows the estimated MMI as a continuous color scale. The ground shaking estimates can be obtained from http://earthquake.usgs.gov/shakemap/.

Exposure

Est. Modified Mercalli Intensity	Est. Population Exposure (k = x1000)	Perceived Shaking	Potential Structure Damage
Est. Modified Mercalli Intensity	Est. Population Exposure (k = x1000)	Perceived Shaking	Resistant	Vulnerable
X	0	Extreme	V. Heavy	V. Heavy
IX	0	Violent	Heavy	V. Heavy
VIII	63k	Severe	Moderate/Heavy	Heavy
VII	1,620k	Very Strong	Moderate	Moderate/Heavy
VI	3,215k	Strong	Light	Moderate
V	9,036k	Moderate	V. Light	Light
IV	52,013k*	Light	None	None
II-III	59,410k*	Weak	None	None
I	--*	Not Felt	None	None

*Estimated exposure only includes population within the map area.

Table showing population exposed to different estimated Modified Mercalli Intensity (MMI) levels and the possible damage at different intensity levels for resistant and vulnerable structures. MMI describes the severity of an earthquake in terms of its effect on humans and structures and is a rough measure of the amount of shaking at a given location. Unlike earthquake magnitude, intensity varies with distance from the fault, and is influenced by the depth of the earthquake and the types of soils in the shaken region. Population outside the map bounds are not included in the totals.

Cities

MMI	City	Population
VII	Curup	46k
VII	Sungaipenuh	95k
VI	Pagaralam	70k
VI	Bengkulu	309k
VI	Lubuklinggau	148k
VI	Lahat	65k
V	Padang	840k
V	Tanjungagung	53k
V	Solok	48k
V	Sijunjung	27k
V	Baturaja	134k
V	Pariaman	92k
V	Bukittinggi	98k
V	Perabumulih	103k
V	Payakumbuh	121k
V	Kotabumi	42k
IV	Jambi	420k
IV	Batu Pahat	156k
IV	Palembang	1441k
IV	Terbanggi-besar	52k
IV	Metro	149k
IV	Mandahara	56k
IV	Simpang	36k
IV	Kualatungkal	33k
IV	Balaipungut	56k
IV	Tanjungkarang-Telukbetung	800k
IV	Jakarta	8540k
IV	Labuhan	33k
IV	Muntok	26k
IV	Singapore	3547k
IV	Padangsidempuan	100k
IV	Serang	164k
IV	Pandegelang	92k
IV	Batang Berjuntai	20k
IV	Rangkasbitung	126k
IV	Kresek	110k
IV	Teluknaga	128k
IV	Pasarkemis	154k
IV	Cikupa	174k
IV	Curug	191k
IV	Sepatan	118k
IV	Tangerang	1372k
IV	Bandar	31k
IV	Rantauprapat	103k
IV	Serpong	80k
IV	Ciputat	207k
IV	Pamulang	174k
IV	Parung	193k
IV	Ciampea	207k
IV	Petaling Jaya	520k
IV	Pangkalpinang	125k
IV	Sawangan	114k
IV	Pekan Nanas	23k
IV	Johor Bahru	802k
IV	Depok	1198k
IV	Bukit Rambai	17k
IV	Batu Berendam	25k
IV	Bogor	800k
IV	Sekudai	159k
IV	Bakri	30k
IV	Kampong Ayer Molek	15k
IV	Cibinong	188k
IV	Parit Raja	17k
IV	Tanjungpinang	125k
IV	Senai	73k
IV	Air Keruh	37k
IV	Kelapa Sawit	13k
IV	Tanjungpandan	62k
IV	Cicurug	88k
IV	Kampong Masjid Tanah	29k
IV	Bekasi	1520k
IV	Kulai	63k
IV	Kampong Simpang Rengam	17k
IV	Makassar	1k
IV	Cileungsi	202k
III	Sibolga	79k
III	Citeureup	110k
III	Bemban	14k
III	Yong Peng	27k
III	Tangkak	35k
III	Kuala Selangor	55k
III	Ulu Tiram	75k
III	Alur Gajah	20k
III	Muar	127k
III	Sungai Udang	26k
III	Dumai	143k
III	Batu Arang	22k
III	Sungai Pelek New Village	13k
III	Cikarang	106k
III	Kelebang Besar	38k
III	Keluang	169k
III	Kampong Bukit Baru	55k
III	Sukabumi	276k
III	Caah	11k
III	Kota Tinggi	52k
III	Teluknibung	25k
III	Sungailiat	74k
III	Rengasdengklok	201k
III	Kuningan	72k
III	Kuala Lumpur	1453k
III	Seremban	372k
III	Caringin 2	91k
III	Labis	21k
III	Segamat	69k
III	Banting	75k
III	Buluh Kasap	13k
III	Ciranjang-hilir	77k
III	Tanjong Sepat	22k
III	Kampong Baharu Nilai	36k
III	Kuala Pilah	19k
III	Tampin	28k
III	Pulau Sebang	11k
III	Jenjarum	24k
III	Cikampek	145k
III	Purwakarta	215k
III	Beranang	14k
III	Klang	879k
III	Tanjungbalai	142k
III	Bahau	31k
III	Kisaran	129k
III	Pelabuhanratu	43k
III	Semenyih	80k
III	Kampong Baharu Balakong	69k
III	Kuala Sungai Baharu	12k
III	Melaka	180k
III	Kampung Tanjung Karang	16k
III	Padalarang	124k
III	Shah Alam	481k
III	Gamat-eMas Network (Batam) - No.1, Blk G	3k
III	Pengkalan Kundang	23k
III	Pematangsiantar	209k
III	Port Dickson	89k
III	Kampung Pasir Gudang	145k
III	Kuang	21k
III	Soreang	150k
III	Margahayu	83k
III	Indramayu	123k
III	Bandung	1699k
III	Pameungpeuk	48k
III	Kijang	41k
III	Pamanukan	114k
III	Rawang	120k
III	Pontian Kecil	50k
III	Kampung Baru Subang	833k
III	Banjaran	164k
III	Cileunyi	111k
III	Serendah	28k
III	Kabanjahe	57k
III	Tebingtinggi	117k
III	Kampong Dungun	58k
III	Lembang	183k
III	Banjar	37k
III	Kampung Bukit Tinggi	12k
III	Paseh	126k
III	Jatibarang	73k
III	Gunung Canggak	5k
III	Jatiwangi	57k
III	Wanaraja	26k
III	Majalengka	87k
III	Singaparna	48k
III	Klangenan	88k
III	Palimanan	92k
III	Arjawinangun	105k
III	Tasikmalaya	271k
III	Kawalu	50k
III	Sumber	93k
III	Astanajapura	148k
III	Ciamis	123k
III	Rajapolah	39k
III	Mersing	22k
III	Plumbon	167k
III	Karangsembung	75k
III	Karangampel	31k
III	Majenang	38k
III	Ketanggungan	44k
III	Bulakamba	27k
III	Sidareja	30k
III	Manggar	34k
III	Adiwerna	134k
III	Pemalang	184k
III	Dukuhturi	98k
III	Tarub	75k
III	Slawi	61k
III	Tegal	237k
III	Balapulang	28k
III	Weru	139k
III	Margasari	27k
III	Wangon	35k
III	Purwokerto	217k
III	Sokaraja	66k
III	Kroya	23k
III	Banyumas	48k
III	Purbalingga	56k
III	Randudongkal	28k
III	Lebaksiu	33k
III	Pontianak	455k
III	Cirebon	254k
III	Pemangkat	34k
III	Baturaden	42k
III	Sungairaya	47k
III	Singkawang	101k

Table of MMI estimates and populations for settlements falling within the map boundaries. The settlement name, location, and population are obtained from the freely-available GeoNames geographical database.

Downloads

Details

Magnitude	8.4
Max MMI	VIII
Date-Time	Wednesday, September 12, 2007 at 11:10:26 UTC
Location	4.517°S, 101.382°E
Depth	30.0 km (18.6 miles)
Event ID	US2007HEAR
Version	2

Additional Information