G. Analysis of Satellite Images of Eruption Clouds from Sakurajima Volcano
In monitoring volcanic eruption by satellites, it is important to evaluate
the height of volcanic cloud from surface temperature.Two scenes of satellite
data just after the eruption of Sakurajima volcano were analyzed, and also
compared with the coincident observation by video camera and photo from the
ground observation point 9.8 km WSW from the crater.
One of them is the NOAA-12/AVHRR data in the early evening
on 29 July 1992 together with the LANDSAT-5/TM data two hours after the
eruption, and the other is the LANDSAT-5/TM data in the daytime on 5 March
1993. We can neglect the atmospheric effect for the eruption columns with the
heights over 4000m where the atmospheric precipitable water is negligible.
On the other hand, the effect of the emissivity must be considered because
the volcanic clouds contain large amounts of volcanic ashes.
The U.S.A. Government retains the ownership of the source data of LANDSAT.
NASDA offered the source data of LANDSAT.
The NOAA data was received at Meteorological Satellite Center of
Japan Meteorological Agency, and provided by Japan Weather Association.
Authors and the reference:
K. Kinoshita, *1, N. Iino, *2 ,
Analysis of Satellite Images of Eruption Clouds from Sakurajima Volcano,
The 22nd.Japanese Conference on Remote Sensing, 1997, p.15(in Japanese).
*1 Faculty of Education, Kagoshima Univ., Kagoshima 890, Japan.
*2 Faculty of Engineering, Kagoshima Univ., Kagoshima 890, Japan.
