Jakarta, domclub Indonesia
–
The Meteorology, Climatology and Geophysics Agency (
BMKG
) Revealing the cause of houses in Sukabumi Regency suffered damage when a series of earthquakes shook the area at the end of last week.
“Damage to house buildings is caused by shallow earthquake hypoacters, soft soil conditions in the earthquake zone and weak building structures,” BMKG Daryono Director of Gempabumi and Tsunami said in his statement on Sunday (9/21).
The earthquake measuring M4.0 vibrated Sukabumi on Saturday (9/20) night at 23:47:44 WIB, which was then followed by dozens of aftershocks the following day.
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This series of earthquakes caused minor damage to several residents’ houses in Cipeuteuy Village, Kabandungan District.
Temporary notes show that there are 5 houses affected, and 20 people must face an emergency situation.
The monitoring results show a total of 39 aftershocks occur after the main earthquake.The aftershocks felt by residents 5 times with the power of M3.0 M3.8 M26, M2.8 and 3.8.
Magnitude of the largest aftershocks themselves with M3.8 and the smallest M 1.9.
The earthquake that shook Sukabumi Regency and its surrounding area was referred to as a shallow crust or shallow earthquake which was triggered by active fault activities.
Daryono explained that the epicenter or epicenter was located on land, precisely in the Kabandungan District area of Sukabumi Regency.
Evidence of Sukabumi-Bogor earthquake is a tectonic earthquake called seen in the earthquake wave form (waveform) the results of the DBJI seismic sensor records (Darmaga) and CBJI (Citeko) with the characteristics of S (Shear) waves that appear strong with high frequency components.
“This fact also ensures that the earthquake that occurred was not triggered by a volcanic earthquake,” explained Daryono.
The results of the BMKG analysis show that the earthquake has a horizontal/shear movement mechanism.
Furthermore, Daryono said that the Sukabumi-Bogor earthquake was not triggered by Citarik Fault activities, because the main earthquake center and the supplements were spread far to the west of the Citarik fault route.
Damaging earthquakes in this region, said Daryono, were not the first time it happened.A similar incident was said to have occurred in March 2020 where hundreds of houses were damaged in 6 sub -districts including Kabandungan.
Then, in July 2000 the earthquake also damaged many houses in several districts, including Kabandungan.
Three years later, the damaged earthquake occurred, precisely in December 2023 in Pamijahan and Kabandungan which caused 61 houses to be damaged.
(lom/mik)
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