by The Jakarta Post – Asia News Network
The earthquake and tsunami caused enough damage in Palu. But few people have seen or understand the process of liquefaction, here caught on satellite in a time lapse.
The National Disaster Mitigation Agency (BNBP) spokesperson in Indonesia, Sutopo Purwo Nugroho, overseeing the relief and rescue efforts in Sulawesi, shared a time-lapse of satellite imagery on his Instagram account. It shows how liquefaction of the soil devastated neighborhoods on September 28 in Palu, Central Sulawesi.
“The process of soil liquefaction in Petobo Housing Complex, Palu, using WordView satellite imaging. Houses and buildings were swept away and sunk into mud that appeared due to the earthquake,” he posted in Indonesian on @sutopopurwo.
“The search and rescue team is working to recover bodies in this area. Victims continue to be found,” he added.
A tsunami and soil liquefaction followed the 7.4-magnitude earthquake that shook Palu and other parts of north-western Sulawesi in Indonesia.
Soil liquefaction, a geological process by which the soil structure collapses, is relatively unknown among the Indonesian public, including survivors and witnesses of the disaster. The Jakarta Post correspondent Ruslan Sangadji reported that on the morning after the quake, survivors referred to the phenomenon as “land tsunami”.
Witnesses said the “mud” rolled like ocean waves. Houses in Petobo shifted as much as 700 meters from their original locations. Yahdi Basma, a Central Sulawesi councilor, whose two-story house moved 700 meters and was partially submerged in the liquefied soil, said the “mud” also dragged coconut trees a few hundred meters. However, he said, the trees were still alive.
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Proses likuifaksi tanah di Komplek Perumahan Petobo, Kota Palu hasil rekaman citra Satelit WorldView resolusi pixel 0.5 meter. Rumah dan bangunan terseret oleh lumpur yang muncul akibat gempa dan menenggelamkannya. Tim SAR terus bekerja melakukan evakuasi di daerah ini. Korban terus ditemukan.
Opening of a rail service between Thailand and Cambodia in Sa Kaew
The Thai PM Prayut Chan-o-cha is leading a delegation to officiate at the opening of a new rail service between Thailand and Cambodia at Klong Luek railway station in Sa Kaew province. The Thai government funded the maintenance and restoration of the two kilometre rail track between Klong Luek station and Poipet station in Cambodia.
Rail services between Thailand and Cambodia were suspended for decades due to strained relationships between the two countries since the Cold War era. Although the relationship is much better these days there was little interest in the restoration of the rail link as people in both countries tended to prefer travel by road.
Sea turtle returns to its nesting place – it’s now an airport!
“Despite the unfortunate circumstances that befell the turtle mother, she is reportedly in good health and was released back into the ocean by locals,” wrote local news website The Edition.
The incident has sparked fresh debates on the environmental and social costs of the Maldive’s tourism-propelled growth (sounds familiar?).
“The question remains on how much of Maldives’ biodiversity must be sacrificed in order to propel our country forward industrially and economically,” the website said.
The airport, which has a 2.2 kilometre, 40 metre-wide runway, was inaugurated in August last year. The UAE-funded project was built on Maafaru, one of the inhabited islands of Noonu Atoll, which is a traditional nesting place of the marine turtles.
Once a green turtle hatches and heads into the ocean, it rarely returns to land. When they reach sexual maturity, they travel long distances to go back to their natal place to mate and lay eggs.
The green turtle (Chelonia mydas) is on the list of endangered species of animals by the International Union for Conservation of Nature (IUCN).
SOURCE: The Nation
East Sulawesi rocked by 6.8 magnitude tremor – tsunami warning
A strong 6.8 magnitude earthquake rattled eastern Indonesia yesterday triggering a tsunami warning, soon retracted, sending panicked residents fleeing to higher ground.
The quake struck off the east coast of Sulawesi island near where a 7.5 magnitude earthquake and tsunami around the city of Palu killed more than 4,300 people in September last year.
Indonesia’s disaster agency issued a tsunami warning for coastal communities in the island’s Morowali district, east Sulawesi, where residents were advised to move to elevated grounds. The warning was later lifted.
The tremor off the eastern coast of Sulawesi is on the other side of the island from last year’s disaster-hit Palu, where residents still felt the quake despite being hundreds of kilometres away.
The force of last year’s quake saw entire neighbourhoods levelled by liquefaction, a process where the ground starts behaving like a liquid and swallows up the earth like quicksand.
The sprawling Indonesian archipelago is dotted with more than 100 volcanoes, including one in the middle of the Sunda Strait between Java and Sumatra islands that erupted in late 2018 and unleashed a tsunami that killed more than 400 people.
SOURCE: The Nation | AFP
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