Open Access Digital Repository of Ministry of Earth Sciences, Government of India

High frequency (HF) radar detection of the weak 2012 Indonesian tsunamis

Lipa, B and Barrick, D and Diposaptono, S and Isaacson, J and Jena, BK and Nyden, B and Rajesh, K and Kumar, TS (2012) High frequency (HF) radar detection of the weak 2012 Indonesian tsunamis. Remote Sensing, 4 (10). pp. 2944-2956.

[img]
Preview
PDF
High frequency.pdf - Published Version

Download (637kB) | Preview

Abstract

We report here on the observation and offline detection of the weak tsunamis generated by earthquakes near Indonesia on 11 April 2012 using radar systems and tide gauges on the coasts of Sumatra and the Andaman Islands. This work extends the previous observations of the much stronger 2011 Japan tsunami. The distance offshore at which the tsunami can be detected, and hence the warning time provided, depends primarily on the bathymetry: the wider the shallow continental shelf, the greater this time. The weak Indonesia tsunamis were detected successfully in spite of the narrow shallow-water shelf offshore from the radar systems. Larger tsunamis could obviously be detected further from the coast. This paper provides further confirmation that radar is an important tool to aid in tsunami observation and warning.

Item Type: Article
Additional Information: Copyright of this article belongs to Author.
Uncontrolled Keywords: radar oceanography;remote sensing;current velocity measurement;tsunami detection
Subjects: Oceanography > oceanography
Depositing User: INCOIS Library
Date Deposited: 13 Dec 2013 06:41
Last Modified: 13 Dec 2013 06:41
URI: http://moeseprints.incois.gov.in/id/eprint/137

Actions (login required)

View Item View Item