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  • UGM Maps Quake-Hit Areas in Cianjur

UGM Maps Quake-Hit Areas in Cianjur

  • 15 December 2022, 15:49 WIB
  • By: Salma
  • 257
UGM Petakan Area Terdampak Gempa Cianjur
UGM Petakan Area Terdampak Gempa Cianjur
UGM Petakan Area Terdampak Gempa Cianjur
UGM Petakan Area Terdampak Gempa Cianjur
UGM Petakan Area Terdampak Gempa Cianjur
UGM Petakan Area Terdampak Gempa Cianjur

The Geodetic Engineering team led by Dr. Ruli Andaru, with the UGM Faculty of Engineering First Responder Team, mapped the zones affected by the 5.6-magnitude earthquake that struck Cianjur, West Java, Indonesia, recently. 

“We want to map photogrammetrically the quake-hit buildings and public facilities, analyze ground movements, and determine housing relocation areas,” said Ruli in a release sent on Tuesday (13/12).

The team used geodetic GNSS and a Lidar and 40Mp camera-equipped VTOL P330 UAV. The drone can cover 1,500 hectares in 100 minutes and has a battery capacity of 30,000 mAh. Lidar technology was used to get more detailed topography/surface data.

“We encountered several technical and non-technical obstacles. Of the 5,000 Ha target, only 1,500 Ha were mapped,” he said.

Ruli said this was due to weather conditions and the movement of helicopters around the location for logistical assistance. Even though the drone flight slots were limited, the team managed to get an overview of the most recent post-quake area. The data will then be processed into photo maps and line maps.

“The 3D terrain allows for accurate ground elevation and slope measurements. The results of this mapping will also be integrated with results from other institutions and uploaded on the portal of the National Disaster Management Agency,” he added.

Bunikasih Village Head Solehudin thanked UGM for this mapping. The results can later help provide more detailed information about the disaster’s impact and suitable zones for relocation.

Deputy Dean for Research, Community Service, and Collaboration of the Faculty of Engineering, Dr. Ali Awaludin, said Dr. Ruli’s team was the first team sent by the faculty. Other departments will also dispatch teams for various assessment purposes.

Head of the Department of Geodetic Engineering, Prof. Trias Aditya, said his party is committed to helping the country in disaster mitigation, especially mapping. Some of these contributions include the eruptions of Mount Merapi (2012-2015) and Mount Agung (2017-2020), landslides in Banjarnegara (2014), and the Aceh earthquake (2016).

“This team will soon carry out a mapping for tidal flood mitigation in Semarang,” said the Department Head.

Author: Ika

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