What question did this study set out to answer?

To evaluate landslide hazards and monitor active slope deformation in the complex mountainous terrain of the Jinsha River Batang reach using integrated InSAR methods.

August 20, 2026Remote SensingOpen Access

Integrating Ascending–Descending SBAS and PS-InSAR to Monitor Landslide Deformation in the Jinsha River Batang Reach, China

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Authors

FRFengling RenChengdu University of Technology YLYan‐Song LiuNorthwestern Polytechnical University YHYubin HaoChengdu University of Technology

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Implication

Remote sensing analysis reveals extensive active landslide deformation in mountainous canyon terrain, indicating critical risks for regional river blockages and infrastructure.

Key Points

To evaluate landslide hazards and monitor active slope deformation in the complex mountainous terrain of the Jinsha River Batang reach using integrated InSAR methods.
Analyzed Sentinel-1A SAR imagery using small baseline subset InSAR (SBAS-InSAR) and persistent scatterer InSAR (PS-InSAR) frameworks.
Mapped spatial-temporal deformation patterns against geological factors including fault proximity, slope gradient, rainfall seasonality, and engineering activities.
SBAS-InSAR achieved a measurement point density of 697 points/km², providing 6.28 times the density of PS-InSAR in steep canyon terrain.
Identified 38 active landslides—including 5 rapidly deforming hazards, 17 with river blockage risks, and 10 with building burial risks—with a maximum downslope deformation rate of −89.56 mm/yr.
Found that approximately 70% of annual cumulative deformation occurs during the rainy season, with active zones clustered within 500 m of faults and on slopes steeper than 30°.

Cite This Study

Ren et al. (2026) studied this question.

synapsesocial.com/papers/6a86b5eb8a91293e6a1cd864 https://doi.org/10.3390/rs18162786

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Implication

Remote sensing analysis reveals extensive active landslide deformation in mountainous canyon terrain, indicating critical risks for regional river blockages and infrastructure.

Integrating Ascending–Descending SBAS and PS-InSAR to Monitor Landslide Deformation in the Jinsha River Batang Reach, China

Discussion

Member takes

Implication

Key Points

Cite This Study

Integrating Ascending–Descending SBAS and PS-InSAR to Monitor Landslide Deformation in the Jinsha River Batang Reach, China

Discussion

Member takes

Implication

Key Points

Cite This Study

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