Dear Jyoti,

These articles might help:

Article Deep learning-based landslide susceptibility mapping

Article Fuzzy-based multiple decision method for landslide susceptib...

Bests,

Hello Jyoti!

First of all - You have to measure the terrain before and after landslide debris. The best way is to use high-resolutuion DEM (like LiDAR or from UAV) from these two time moments. Next step is to use i.e. ArcGIS and the tool to calculating the volume (ArcToolbox - 3d Analyst Tools - Raster surface - Cut Fill)

Dear Jyoti

I found usefull the following article with an overview of existing methods:Article A review of methods used to estimate initial landslide failu...

Dear Jyoti Joshi

Basically you can use the following three methods to estimate the landslide volume (both zones of depletion and accumulation). Though, DEMs before and after failure are required, but not essential always.

1. Cut and fill method when you have both pre- and post-landslide DEMs.

https://ieeexplore.ieee.org/abstract/document/5440955

2. Cut and fill method when you have only pre-landslide DEM (which is mostly available) and a geomorphically reconstructed post-landslide DEM.

Article Debris volume estimation and monitoring of Phuktal river lan...

3. Empirically, using landslide area-volume scaling relationship.

https://www.nature.com/articles/ngeo1154/tables/1

Hope its helpful to you.

Tapas

Sir, I am sharing our current article. Please give your valuable opinion.

https://www.researchgate.net/publication/360917378_Landslide_susceptibility_mapping_of_Kalimpong_in_Eastern_Himalayan_Region_using_a_Rprop_ANN_approach