Moisture & roughness map in arctic national wildlife Refuge/Alaska

Manabu Watanabe, Keiji Kushida, Masami Fukuda, Motoyuki Sato

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

Abstract

We propose an algorithm to estimate moisture level of active layer of permafrost over permafrost area. This algorithm is based on Oh's semi-empirical model, and PALSAR data observed both in winter and summer seasons with vh polarization. PALSAR vh polarization data observed in winter is used to estimate surface roughness of permafrost. Then, the estimated surface roughness and PALSAR vh polarization data observed in summer is used to estimate the moisture level of the active layer of the permafrost. The moisture levels estimated from PALSAR data moderately matched to those of validation data taken in the field with correction factor of 0.6, while the surface roughness value shows some difference. The possible cause of the difference observed in the roughness value is that the surface roughness derived from the field data collection represents the roughness of the top of the sphagnum moss layer covered on the active layer of the permafrost, while the one estimated from PALSAR represents the roughness of the underlying active layer of the permafrost.

Original languageEnglish
Title of host publication2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011
Pages265-268
Number of pages4
Publication statusPublished - 2011
Event2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011 - Seoul, Korea, Republic of
Duration: 2011 Sep 262011 Sep 30

Publication series

Name2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011

Other

Other2011 3rd International Asia-Pacific Conference on Synthetic Aperture Radar, APSAR 2011
Country/TerritoryKorea, Republic of
CitySeoul
Period11/9/2611/9/30

Keywords

  • PALSAR
  • algorithm
  • moisture

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Communication

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