Application of C-band Doppler Weather Radar (CDR) for Detecting Volcanic Ash Dispersion of Sinabung Eruption 19 February 2018

11th Aceh International Workshop and Expo on Sustainable Tsunami Disaster Recovery

Irwandi, I.^1^2^3 ; Ilhamsyah, Yopi^1 ; Permana, Donaldi S.^4 ; Haloho, Melanton P.^5 ; Prasetyo, Budi^5 ; Dana, Isya N.^6

Tsunami and Disaster Mitigation Research Center (TDMRC), Syiah Kuala University, Jl. Prof. Dr. Ibrahim Hasan, Gampong Pie, Banda Aceh

23233, Indonesia^1

Physics Department, Syiah Kuala University, Banda Aceh

23111, Indonesia^2

Geophysics Engineering Department, Syiah Kuala University, Indonesia^3

Center for Research and Development BMKG, Jl. Angkasa I No. 2, Jakarta Pusat

10720, Indonesia^4

BMKG, Jl. Ngumban Surbakti No. 15, Wilayah I Medan, Indonesia^5

Center for Volcanology and Geologic Hazards (PVMBG), Bandung, Indonesia^6

关键词: C-bands;    Direct product;    Doppler weather radars;    Medium size;    Volcanic areas;    Volcanic ash;    Volcanic ash dispersions;    Volcanic eruptions;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/273/1/012019/pdf
DOI  :  10.1088/1755-1315/273/1/012019

来源: IOP

【 摘 要 】

The weather radar is generally employed to forecast the potential of hydrometeorological hazard. In the present paper, we focus on the application of C-band Doppler Weather Radar (CDR) to identify February 19th, 2018 Sinabung volcanic eruption and its dispersion by using a direct product in the form of CMAX (Column Max) retrieved from reflectivity factor (dBz). The distribution of reflectivity factor varies from the center of the eruption to the farther location indicating the dispersion of material size erupted by the Sinabung. Lapili which is larger material size with 48dBz tends to locate in the nearby volcanic area. The medium size of the material like coarse volcanic ash with 33 dBz of reflectivity was floating in the air and carried away by the wind. Meanwhile fine volcanic ash with 10 dBz of reflectivity flies a great distance along with the wind.