JAKARTA (TheInsiderStories) – An earthquake measuring 5.1 magnitude shook the South Solok, Mentawai, Padang, and Bukit Tinggi and caused a number of buildings to be damaged on Thursday (02/28). The National Agency for Disaster Management noted the earthquake in Solok caused 48 people to be injured, 343 houses damaged so far.
Taking into account the location of the epicenter and the depth of the hypocenter, this earthquake was reported as a type of shallow crustal earthquake that occurred due to the activities of the Sumatra Fault Zone in the difficult segment.
The results of the analysis of the source mechanism indicate that this earthquake was generated by rock deformation with the mechanism of strike-slip movement. Until the news was revealed, the results of agency monitoring had not shown any aftershock activity.
Not only in West Sumatra, a tectonic earthquake with magnitude 4.0 also rocked the Pandeglang region of Banten on Thursday, 07:55 local time. The earthquake originating in the sea was reported by the agency not to generate a tsunami.
The source of the earthquake was 11 kilometers deep. This type of earthquake, according to the Agency, is classified as shallow. The cause of the earthquake due to the activity of sub-duction of the Indonesian-Australian plate which infiltrated beneath the Eurasian plate and rock deformation occurred until it triggered an earthquake.
This morning, 5.3 magnitude hit Sangihe Island in North Sulawesi but no tsunami’ potential. While 2.0 SR felt by the people of Lombok in West Nusa Tenggara, 3.1 in Deli Serdang, North Sumatera, and early increased wether has showed at Aceh, Central Kalimantan, South Sumatera and East Java.
So far, various natural and humanitarian disasters hit the Indonesian people throughout 2018. The casualties and damage have consumed hundreds of thousands of human lives and other physical facilities.
Unfortunately, Indonesia government’ political budget and attitude for management policies still far from good performance. As a country surrounded by Ring of Fire, Indonesia will not separated from geological disasters such as the tsunami earthquake.
Based on the agency data, there were around 2.532 disaster throughout 2018. The disaster caused 4,773 killed and disappear, 14,193 injured, 10.2 million displaced and affected, and 318,044 housing units or public facilities damaged.
In details, there have been 285 tornado disasters, 667 floods, 466 landslides, 370 forest and land fires, 129 droughts, 57 volcanic eruptions, 34 tidal or abrasion waves, 22 earthquakes, 1 tsunami and 1 earthquake and tsunami.
These data stated that the most frequent disasters were 2,001 (96.8 percent) hydro-meteorological disasters such as floods and tornadoes and 81 (3.2 percent) geological disasters in the form of earthquakes and tsunamis.
Although there are few geological disasters, the potential for damage is far greater than the hydro-meteorological disaster. The 22 times the earthquake caused 572 deaths, 2,001 injuries, 483,399 people were displaced, and 226,667 housing units were damaged.
Likewise, earthquakes followed by tsunamis and liquefaction occur only once, namely in Central Sulawesi. However, there were 3,475 people died and missing, 4,438 people were injured, 221,450 people were displaced, and 68,451 houses were damaged.
And finally, one tsunami in the Sunda Strait on Saturday (12/22) then caused 431 killed, 7,200 people injured, 15 people missing, and 46,646 people displaced. In addition, there were damage to 1,527 medium-damaged housing units, 181 lightly damaged houses, 78 lodging and food stalls, 434 ships and boats and several public facilities.
Based on the Indonesian geographical population, estimated that around 148.4 million people were exposed to the disaster and 3.8 million people exposed to the tsunami disaster. It means, almost half of Indonesia’s population lives or is close to the area where the disaster occurred, both earthquake and tsunami.
This condition is very precarious because it threatens for life security. The government itself is working to create a disaster risk reduction master plan. There are at least four programs launched, namely strengthening the chain of disaster early warning, building and improving temporary evacuation sites, strengthening preparedness capacity, and building the independence of the disaster industry.
The realization of disaster mitigation master plan actually relates to the availability of the budget. As assumption, that if the annual disaster management budget continues to decrease, or does not meet the estimated needs of disaster management funds, it will have an impact on the performance of the institutions concerned.
Actually, Indonesia once had a detection device in the form of a tsunami buoy network installed around the archipelago’s. There are at least 22 buoy networks, of which 8 units were built by the Indonesian government, 10 units by Germany, one unit by Malaysia, and two units by the United States which operated in 2008. But since 2012, these devices no longer function.
At present, Indonesia only has five international-owned buoys scattered in Indonesian waters, one unit in western Aceh (India), one unit in the Andaman Sea (Thailand), 2 units in southern Sumba (Australia), and one unit in the eastern border (United States).
Written by Lexy Nantu, Email: firstname.lastname@example.org