Digital elevation models, ortho images and outlines of Yala Glacier, Langtang Valley, Nepal Himalaya

Datasets related to article "Up-glacier propagation of surface lowering of Yala Glacier, Langtang Valley, Nepal Himalaya". The data includes three digital elevation models (DEM), two ortho images and five outlines of Yala Glacier between 1981 and 2015.

Description of files:
1) DEM and ortho image

- 1981Yala_dem_20_-10_bias_cor.tif: 10 m resolution digital elevation model derived from a map that was generated using ground phogogrammetry images that were acquired in 1981 (Yokoyama, 1984; Fujita and Nuimura).

- 2007Yala_dem_0_-4_bias_cor.tif: 2 m resolution digital elevation model derived from 14 oblique photographs that were acquired by a private jet with handheld cameras in 2007.
- 2007Yala_ortho.tif: an ortho images derived by the same data in 2007.

- 2015Yala_dem_0_0_bias_cor.tif: 1 m resolution digital elevation model derived from 519 photographs that were acquired by a UAV-based photogrammetric survey in 2015.
- 2015Yala_ortho.tif: an ortho images derived by the same data in 2015.

2) Glacier boundary (shapefile Files)

- Yala_area_1981: 
- Yala_area_2007:
- Yala_area_2009:
- Yala_area_2012:
- Yala_area_2015:

Please see the related journal article for details on datasets.

Sunako, S., Fujita, K., Izumi, T., Yamaguchi, S., Sakai, A., & Kayastha, R. (2023). Up-glacier propagation of surface lowering of Yala Glacier, Langtang Valley, Nepal Himalaya. Journal of Glaciology, 69(274), 425-432. doi:10.1017/jog.2022.118