The Technical Concept of Differential Optical Absorption Spectroscopy for SO₂ Gas Spectrum Monitoring on Volcanic Ash of Gunung Anak Krakatau volcano

DOI

10.2991/aer.k.210603.023How to use a DOI?

Keywords

Krakatau, Krakatoa, DOAS, volcanic ash, SO2, early warning system

Abstract

Gunung Anak Krakatau is one of the active volcanoes in Indonesia. In October – December 2018, it erupted 156 times by releasing incandescent materials and toxic gases in the form of sulphur dioxide (SO2), carbon dioxide (CO2), and hydrogen sulphide (H2S) at 2 km radius. The release of SO2 gas indicates that magma is approaching the surface and puts the volcano on alert status. Finally on 22 December 2018 the continued eruption caused the flank collapse on some part of the volcano, triggered a tsunami that stroke the coastal of Lampung and Banten. This work investigated the SO2 gas monitoring technology using Differential Optical Absorption Spectroscopy (DOAS). The study specifically concerns on the working principles of DOAS, optimization of DOAS with optical bandpass filters and amplifiers, as well as the implementation architecture design of DOAS from Gunung Anak Krakatau Volcano to Hargo Pancuran Monitoring Station. Based on this study, the DOAS can be used to monitor SO2 gas by using a catadioptric telescope and the optimization works for UG11 as an optical bandpass filter and Raman Amplifier as the amplifier.

Copyright

© 2021, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Ardian Ulvan
AU  - Muhamad Rifky Maulana
AU  - Mona Arif Muda Batubara
AU  - Nora Aditiyan
AU  - Melvi
PY  - 2021
DA  - 2021/06/04
TI  - The Technical Concept of Differential Optical Absorption Spectroscopy for SO₂ Gas Spectrum Monitoring on Volcanic Ash of Gunung Anak Krakatau volcano
BT  - Proceedings of the International Conference on Sustainable Biomass (ICSB 2019)
PB  - Atlantis Press
SP  - 137
EP  - 143
SN  - 2352-5401
UR  - https://doi.org/10.2991/aer.k.210603.023
DO  - 10.2991/aer.k.210603.023
ID  - Ulvan2021
ER  -