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Deteksi Debu Vulkanik DenganDeteksi Debu Vulkanik Dengan
Radar CuacaRadar Cuaca
Study Kasus Letusan Gunung Lokon 6Study Kasus Letusan Gunung Lokon 6
Desember 2012Desember 2012
Created by :Created by :
Eko WardoyoEko Wardoyo
Staff Sub Bidang pengelolaan Citra InderajaStaff Sub Bidang pengelolaan Citra Inderaja
ekowardj@yahoo.comekowardj@yahoo.com
Profile Gunung Api LOKON
http://www.tempo.co/read/news/2011/08/29/179354029/Mel
etus-Sekali-Gunung-Lokon-Terus-Keluarkan-Debu-Vulkanik
Kementrian
ESDM
(Pusat
Vulkanologi dan
Mitigasi Bencana
Geologi)
Air Traffic
Service Unit
(Bandara)
Internal
BMKG
1. Aerodrom
e Met.
Office/
Sta.Met
2. MWO
terdekat
Met.Watch
Office (MWO)/
BMKG
Volcanic Ash
Advisory Centre/
DARWIN
DitjenUd
(Notice to
Airman/ NOTAM
Office)
Volcani
c Ash
Advisor
y
Volcanic
Activity
Report
(VAR)
OFFICES
• Bandara
• Airlines
• DitjenUd
(Aeronautical
Information Services,
AIS)
ASHTA
M =
SIGMET*
Distribusi
Int’l: (List)
1. Singapore
2. Darwin
3. Jepang
4. dst…
Volcanic
Activity
Report
Volcanic Activity
Report
Inflight Aircrafts
dalam wilayah
terkena dampak
*SIGMET: Significant
Meteorology (sebaran
debu vulkanik
berdasarkan observasi
dan prakiraan)
SIGMET
*
F + Angin F + Angin +
Satelite Image
-
- Lokasi
Gunung
- Tinggi
Gunung
- Tinggi
Letusan
F
Ash to Airman
(Crew)
BMKG
1
2
3
4
Citra Radar Manado
Produk MAX
• Pola Semburan debu
terlihat setelah 20
menit dari letusan
pertama 08.17 UTC.
• Pola Ini memiliki
karakteristik yang
sangat khas
dibandingkan echo
presipitasi pada
umumnya, dimana
reflektifitas sangat
rendah 5 – 15 dBZ.
Dan terlihat seperti
asap yang meliuk
tertiup angin
Untuk analisa lebih lanjutin dilakukan Cross section pada echo terduga
Ash Volcano
• Cross section pada echo terduga Ash Volcano terlihat memiliki
perubahan ketinggian terhadap jarak tanpa dasar di lapisan
bawahnya, sedangkan wilayah Gunung Lokon hanya berjarak <
50 Km dari radar sehingga umumnya echo precipitasi akan
memiliki dasar di lapisan bagian bawah
Cross Section Echo Presipitasi pada umumnya pada
jarak yang sama dengan lokasi Gunung Lokon
meskipun berubah ketinggian terhadap jarak
namun memiliki dasar dan pola kenaikan yang
landai di bagian dasar.
Kesimpulan
• Radar dapat digunakan untuk mendeteksi
Debu Vulkanik, dengan menggunakan Produk
Max yang disesuaikan dengan ketinggian
Gunung Berapi.
• Ketinggian Letusan sangat berpengaruh
terhadap echo yang diterima radar sesaat
sesudah terjadi letusan, sehingga diperlukan
pengamatan yang kontinyu.
• Umumnya intensitas Reflektifty dari debu
Vulkanik < 25 dBZ bergantung dari jenis
material yang disemburkan.

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DETEKSI DEBU VULKANIK

  • 1. Deteksi Debu Vulkanik DenganDeteksi Debu Vulkanik Dengan Radar CuacaRadar Cuaca Study Kasus Letusan Gunung Lokon 6Study Kasus Letusan Gunung Lokon 6 Desember 2012Desember 2012 Created by :Created by : Eko WardoyoEko Wardoyo Staff Sub Bidang pengelolaan Citra InderajaStaff Sub Bidang pengelolaan Citra Inderaja ekowardj@yahoo.comekowardj@yahoo.com
  • 2.
  • 3. Profile Gunung Api LOKON http://www.tempo.co/read/news/2011/08/29/179354029/Mel etus-Sekali-Gunung-Lokon-Terus-Keluarkan-Debu-Vulkanik
  • 4.
  • 5. Kementrian ESDM (Pusat Vulkanologi dan Mitigasi Bencana Geologi) Air Traffic Service Unit (Bandara) Internal BMKG 1. Aerodrom e Met. Office/ Sta.Met 2. MWO terdekat Met.Watch Office (MWO)/ BMKG Volcanic Ash Advisory Centre/ DARWIN DitjenUd (Notice to Airman/ NOTAM Office) Volcani c Ash Advisor y Volcanic Activity Report (VAR) OFFICES • Bandara • Airlines • DitjenUd (Aeronautical Information Services, AIS) ASHTA M = SIGMET* Distribusi Int’l: (List) 1. Singapore 2. Darwin 3. Jepang 4. dst… Volcanic Activity Report Volcanic Activity Report Inflight Aircrafts dalam wilayah terkena dampak *SIGMET: Significant Meteorology (sebaran debu vulkanik berdasarkan observasi dan prakiraan) SIGMET * F + Angin F + Angin + Satelite Image - - Lokasi Gunung - Tinggi Gunung - Tinggi Letusan F Ash to Airman (Crew) BMKG 1 2 3 4
  • 6. Citra Radar Manado Produk MAX • Pola Semburan debu terlihat setelah 20 menit dari letusan pertama 08.17 UTC. • Pola Ini memiliki karakteristik yang sangat khas dibandingkan echo presipitasi pada umumnya, dimana reflektifitas sangat rendah 5 – 15 dBZ. Dan terlihat seperti asap yang meliuk tertiup angin Untuk analisa lebih lanjutin dilakukan Cross section pada echo terduga Ash Volcano
  • 7.
  • 8. • Cross section pada echo terduga Ash Volcano terlihat memiliki perubahan ketinggian terhadap jarak tanpa dasar di lapisan bawahnya, sedangkan wilayah Gunung Lokon hanya berjarak < 50 Km dari radar sehingga umumnya echo precipitasi akan memiliki dasar di lapisan bagian bawah
  • 9. Cross Section Echo Presipitasi pada umumnya pada jarak yang sama dengan lokasi Gunung Lokon meskipun berubah ketinggian terhadap jarak namun memiliki dasar dan pola kenaikan yang landai di bagian dasar.
  • 10. Kesimpulan • Radar dapat digunakan untuk mendeteksi Debu Vulkanik, dengan menggunakan Produk Max yang disesuaikan dengan ketinggian Gunung Berapi. • Ketinggian Letusan sangat berpengaruh terhadap echo yang diterima radar sesaat sesudah terjadi letusan, sehingga diperlukan pengamatan yang kontinyu. • Umumnya intensitas Reflektifty dari debu Vulkanik < 25 dBZ bergantung dari jenis material yang disemburkan.