Next Article in Journal
Estimation of Gap Fraction and Foliage Clumping in Forest Canopies
Next Article in Special Issue
Land Cover Change in the Lower Yenisei River Using Dense Stacking of Landsat Imagery in Google Earth Engine
Previous Article in Journal
Aboveground Forest Biomass Estimation Combining L- and P-Band SAR Acquisitions
Previous Article in Special Issue
Growth of Retrogressive Thaw Slumps in the Noatak Valley, Alaska, 2010–2016, Measured by Airborne Photogrammetry
Article Menu
Issue 7 (July) cover image

Export Article

Open AccessFeature PaperArticle
Remote Sens. 2018, 10(7), 1152; https://doi.org/10.3390/rs10071152

Sentinel-1 InSAR Measurements of Elevation Changes over Yedoma Uplands on Sobo-Sise Island, Lena Delta

1,2,3,*
,
4
,
4,5
,
2
and
1,3,6,*
1
Institute of Space and Earth Information Science, The Chinese University of Hong Kong, 999077 Hong Kong, China
2
Earth System Science Programme, Faculty of Science, The Chinese University of Hong Kong, 999077 Hong Kong, China
3
Shenzhen Research Institute, The Chinese University of Hong Kong, 518172 Shenzhen, China
4
Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, 14473 Potsdam, Germany
5
Institute of Earth and Environmental Sciences, University of Potsdam, 14476 Potsdam, Germany
6
Department of Geography and Resource Management, The Chinese University of Hong Kong, 999077 Hong Kong, China
*
Authors to whom correspondence should be addressed.
Received: 31 May 2018 / Revised: 15 July 2018 / Accepted: 20 July 2018 / Published: 21 July 2018
(This article belongs to the Special Issue Remote Sensing of Dynamic Permafrost Regions)
Full-Text   |   PDF [4889 KB, uploaded 21 July 2018]   |  

Abstract

Yedoma—extremely ice-rich permafrost with massive ice wedges formed during the Late Pleistocene—is vulnerable to thawing and degradation under climate warming. Thawing of ice-rich Yedoma results in lowering of surface elevations. Quantitative knowledge about surface elevation changes helps us to understand the freeze-thaw processes of the active layer and the potential degradation of Yedoma deposits. In this study, we use C-band Sentinel-1 InSAR measurements to map the elevation changes over ice-rich Yedoma uplands on Sobo-Sise Island, Lena Delta with frequent revisit observations (as short as six or 12 days). We observe significant seasonal thaw subsidence during summer months and heterogeneous inter-annual elevation changes from 2016–17. We also observe interesting patterns of stronger seasonal thaw subsidence on elevated flat Yedoma uplands by comparing to the surrounding Yedoma slopes. Inter-annual analyses from 2016–17 suggest that our observed positive surface elevation changes are likely caused by the delayed progression of the thaw season in 2017, associated with mean annual air temperature fluctuations. View Full-Text
Keywords: Sentinel-1 InSAR; Yedoma uplands; Sobo-Sise Island; summer heave; permafrost thaw subsidence; active layer Sentinel-1 InSAR; Yedoma uplands; Sobo-Sise Island; summer heave; permafrost thaw subsidence; active layer
Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Chen, J.; Günther, F.; Grosse, G.; Liu, L.; Lin, H. Sentinel-1 InSAR Measurements of Elevation Changes over Yedoma Uplands on Sobo-Sise Island, Lena Delta. Remote Sens. 2018, 10, 1152.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Remote Sens. EISSN 2072-4292 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top