ASIAN JOURNAL OF GEOINFORMATICS
ISSN: 1513-6728


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Mapping and Tracking Nighttime Fishing Activities within Japan EEZ using VIIRS Boat Detection Regular Paper

by Wataru Takeuchi*, Yiwei Huang

Nighttime fishing is one of the most efficient methods used in modern fisheries. About one quarter of Japanese annual sea surface fishery production is caught by fishing boats that use powerful light to attract fishes, based on their phototaxis. This study explored the potential application of the nighttime boat detection data, extracted from the Visible Infrared Imaging Radiometer Suite Day/Night Band (VIIRS DNB) images, for monitoring fishing activities. Nightly boat detection data from 2016 t ... Read more

Geospatial Technology in Hypsometric Analysis of Mohand Anticline, Uttarakhand, India Regular Paper

by GAURAV SINGH*, J. DAS, A. K. SARAF, S. BORGOHAIN, S. S. BARAL

Remote sensing and GIS serve as significant tools for studying morphometric characteristics of watersheds. Hypsometric analysis being a parameter of it is defined as the relationship between the horizontal cross-sectional area of the watershed and its elevation. The present study emphasizes on Hypsometric analysis of Mohand Anticline, Uttarakhand, India using Digital Elevation Model (DEM). This study takes into account the Hypsometric curves of watersheds developed over actively deformed Mohand ... Read more

COMBINED SATELLITE OBSERVATION AND MODELING THE WAVES IN TROPICAL CYCLONES Regular Paper

by Maria Yurovskaya, Alexis Mouche, Alexey Mironov, Fabrice Collard, Betrand Chapron, Vladimir Kudryavtsev

A joint analysis of CFOSAT SWIM/SCAT and Sentinel-1 SAR data together with results of recently developed parametric model for rapid estimation of waves in tropical cyclones (TC) is presented. The satellite measurements were obtained over the Philippine Sea on October 29th, 2020, in TC Goni. The model for wave evolution inside TC is based on energy and momentum conservation laws. The coupled equations are written in their characteristic form to provide practical means to rapidly assess how the en ... Read more

ESTIMATING FIRE TEMPERATURE WITH SHORT-WAVE INFRARED BANDS OF HIGH RESOLUTION SATELLITES Regular Paper

by Soo Chin Liew*

This paper describes a novel technique of detecting daytime fires and estimating fire temperature and fire fractional area using the short-wave infrared (SWIR) bands of high resolution satellites such as Sentinel-2, Landsat-9 and WorldView-3. It is a great challenge to detect daytime fires due to the influence of solar reflected radiance. In our algorithm, the surface reflectance is modeled by a linear combination of a small number of reflectance basis functions. The algorithm could then retrie ... Read more

Earthquake Prediction with Meteorological Satellite Imagery Communications

by Shunji Murai*

Here in this paper video images of Japanese meteorological satellite “HIMAWARI” are used to develop a new method of earthquake prediction in which special cloud anomalies appear in advance of large earthquakes. The method is based on expert image interpretation system. 40 earthquakes larger than M6.0 which occurred between 2016 and 2020 in Japan are validated. The results show that 65.0% of the earthquakes larger than M6.0, 75.0% of earthquakes larger than M6.3, 88.9% of earthquakes larger t ... Read more

MEGA Earthquake Prediction in Asia using a Yearly Unit Periodicity Communications

by Shunji Murai*

The objective of this research is to develop earthquake prediction in Asia using the yearly unit cycle of past mega earthquakes for supporting clearly targeting preparedness against earthquake disaster. Hereinafter mega earthquake means large earthquakes causing human casualties. The method is based on newly developed multiple year interval analyses between combinations of past mega earthquakes in each region derived from historical records. In this paper the new method is named Yearly Unit Cycl ... Read more