Estimation of cause of ice jam flooding in sub-arctic regions using PALSAR full polarimetry data

Manabu Watanabe, Hiroki Takakura, Chinatsu Yonezawa, Yasuhiro Yoshikawa, Masanobu Shimada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

PALSAR full polarimetry data were used to detect thaw/freeze conditions on the ground to try to determine the cause of a spring flood on a northern river in Russia. Full polarimetric data was used to identify the forest area, and the radar backscattering coefficient, a0 HV, was examined. The a0HV over a frozen forest area was -19.9 dB, while that of a thawing forest area was -11.9 dB, and freeze/thaw events over the forest area were well represented by this parameter. Using this characteristic, together with optical sensor (AVNIR-2) data and microwave radiometer (AMSR-E) data, freeze/thaw conditions were examined for an area including Markha, where a large ice jam flood occurred in 2007, and compared it to 2009, when no flooding occurred. The results indicate that the thawing event proceeded more rapidly between March 29 and April 10, 2007 for the forest, and this rapid thawing may be one of the possible causes for the large ice jam flood in Markha in 2007.

Original languageEnglish
Title of host publicationInternational Geoscience and Remote Sensing Symposium (IGARSS)
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages843-846
Number of pages4
ISBN (Electronic)9781479957750
DOIs
Publication statusPublished - 2014 Jan 1
EventJoint 2014 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2014 and the 35th Canadian Symposium on Remote Sensing, CSRS 2014 - Quebec City, Canada
Duration: 2014 Jul 132014 Jul 18

Other

OtherJoint 2014 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2014 and the 35th Canadian Symposium on Remote Sensing, CSRS 2014
CountryCanada
CityQuebec City
Period14/7/1314/7/18

Keywords

  • L-band SAR
  • PALSAR
  • Russia

ASJC Scopus subject areas

  • Computer Science Applications
  • Earth and Planetary Sciences(all)

Fingerprint Dive into the research topics of 'Estimation of cause of ice jam flooding in sub-arctic regions using PALSAR full polarimetry data'. Together they form a unique fingerprint.

Cite this