Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

LiDAR and UAV SfM-MVS of Merapi Volcanic Dome And Crater Rim Change from 2012 to 2014

Christopher Gomez
* ,
Franck Lavigne
ORCID logo ,
Noviyanti Listyaningrum
,
Sandy Budi Wibowo
,
Danang Sri Hadmoko
,
Wiwit Suryanto
ORCID logo ,
Herlan Darmawan
,
Balazs Bradak
,
Rikuto Daikai
,
Sunardi Sunardi
,
Yudo Prasetyo
ORCID logo ,
Annisa Joviani Astari
,
Lukman Lukman
ORCID logo ,
Idea Wening Nurani
,
Moh. Dede
,
Indranova Suhendro
Version 1 : Received: 29 August 2022 / Approved: 29 August 2022 / Online: 29 August 2022 (08:34:39 CEST)

A peer-reviewed article of this Preprint also exists.

Gomez, C.; Setiawan, M.A.; Listyaningrum, N.; Wibowo, S.B.; Hadmoko, D.S.; Suryanto, W.; Darmawan, H.; Bradak, B.; Daikai, R.; Sunardi, S.; Prasetyo, Y.; Astari, A.J.; Lukman, L.; Nurani, I.W.; Dede, M.; Suhendro, I.; Lavigne, F.; Malawani, M.N. LiDAR and UAV SfM-MVS of Merapi Volcanic Dome and Crater Rim Change from 2012 to 2014. Remote Sens. 2022, 14, 5193. Gomez, C.; Setiawan, M.A.; Listyaningrum, N.; Wibowo, S.B.; Hadmoko, D.S.; Suryanto, W.; Darmawan, H.; Bradak, B.; Daikai, R.; Sunardi, S.; Prasetyo, Y.; Astari, A.J.; Lukman, L.; Nurani, I.W.; Dede, M.; Suhendro, I.; Lavigne, F.; Malawani, M.N. LiDAR and UAV SfM-MVS of Merapi Volcanic Dome and Crater Rim Change from 2012 to 2014. Remote Sens. 2022, 14, 5193.

Abstract

Spatial approach based on the deformation measurement of volcanic dome and crater rim is key to evaluate the activity of a volcano, such as Merapi volcano where associated disaster risk is regularly taking lives. Within this framework, this study aime to detect localized deformation and change in the summit area that has occurred concomitantly with the dome growth and explosion reported. The methodology was focused on two sets of data, one LiDAR-based dataset of 2012 and one UAV-dataset of 2014. The results show that during the period 2012-2014, the crater walls are 100 m to 120 m high above the crater floor at its maximum (North to East-South-East sector), while the West and North sector presents a topographic range of 40 to 80 m. During the period 2012 – 2014, the evolution of the crater rim around the dome is generally stable (no large collapse). The opening of a new vent on the surface of the dome has displaced an equivalent volume of 2.04 E+04 m3 corresponding to a maximum -9 m (+/- 0.9 m) vertically. This concludes that during the period 2012 – 2014 when the dome of Merapi experienced phreatic or phreatomagmatic explosions, the topography around the dome rose. This rise does not seem to be related to large wall collapses, and it is likely that modification in the subsurface have triggered those changes.

Keywords

Merapi Volcano; Indonesia; Natural Hazards; Disaster Risk and Point-cloud technology

Subject

Environmental and Earth Sciences, Geochemistry and Petrology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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