The Baribis Fault ( id, Sesar Baribis) is a geological feature located in the northern part of
Java
Java (; id, Jawa, ; jv, ꦗꦮ; su, ) is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea to the north. With a population of 151.6 million people, Java is the world's mo ...
. This fault, estimated to be long, stretches from
Purwakarta
Purwakarta ( Dutch: Poerwakarta) is a district and town in West Java, Indonesia which serves as the regency seat of the Purwakarta Regency. It had a population of 165,447 at the 2010 Census,. rising to 179,233 at the 2020 Census.
History
Purwak ...
to
Lebak Regency
Lebak Regency is a regency of Banten province, Indonesia. It is located on the island of Java. The regency has an area of 3,305.072 km2 and had a population of 1,204,095 at the 2010 census and 1,386,793 at the 2020 census; the official estima ...
and is a threat to the
Jakarta metropolitan area
The Jakarta metropolitan area or Greater Jakarta, known locally as Jabodetabek (an acronym of Jakarta–Bogor– Depok–Tangerang–Bekasi), and sometimes extended to Jabodetabekjur (with the acronym extended to include part of Cianjur Regen ...
because the fault is partially located within the metropolitan area itself.
Characteristics
The fault is estimated at 100 km long and stretches from
Purwakarta
Purwakarta ( Dutch: Poerwakarta) is a district and town in West Java, Indonesia which serves as the regency seat of the Purwakarta Regency. It had a population of 165,447 at the 2010 Census,. rising to 179,233 at the 2020 Census.
History
Purwak ...
to
Lebak Regency
Lebak Regency is a regency of Banten province, Indonesia. It is located on the island of Java. The regency has an area of 3,305.072 km2 and had a population of 1,204,095 at the 2010 census and 1,386,793 at the 2020 census; the official estima ...
, moving at a rate of 5 mm a year. It is a
thrust fault
A thrust fault is a break in the Earth's crust, across which older rocks are pushed above younger rocks.
Thrust geometry and nomenclature
Reverse faults
A thrust fault is a type of reverse fault that has a dip of 45 degrees or less.
If ...
formed during the
Pliocene
The Pliocene ( ; also Pleiocene) is the epoch in the geologic time scale that extends from 5.333 million to 2.58earthquake in 1834 which resulted in five deaths and serious damage in
West Java
West Java ( id, Jawa Barat, su, ᮏᮝ ᮊᮥᮜᮧᮔ᮪, romanized ''Jawa Kulon'') is a province of Indonesia on the western part of the island of Java, with its provincial capital in Bandung. West Java is bordered by the province of Bante ...
. It sometimes causes small earthquakes.
Hazard
The fault passes through the
Jakarta metropolitan area
The Jakarta metropolitan area or Greater Jakarta, known locally as Jabodetabek (an acronym of Jakarta–Bogor– Depok–Tangerang–Bekasi), and sometimes extended to Jabodetabekjur (with the acronym extended to include part of Cianjur Regen ...
, which has a population of more than 30 million, where an earthquake could cause huge loss of life and damage.
List of earthquakes in Indonesia
__NOTOC__
This is an incomplete list of more recent recorded major earthquakes that have occurred within the boundaries of Indonesia. The determinants of the activity are indicated by the geology of the region, and the volcanic activity.
Large nu ...
*
1834 Java earthquake
The 1834 Java earthquake struck the Dutch East Indies (present-day Indonesia) island of Java, in the city of Bogor. The earthquake occurred on the morning of October 11, 1834. It was assigned VIII (''Severe'') to IX (''Violent'') on the Modified ...