DOI: 10.16904/envidat.48
title: UAV-derived Digital Surface Models and orthoimages for three alpine glaciers

description: UAV-derived DSMs and orthoimages
Unmanned Aerial Vehicle (UAV) surveys were conducted between 2015 and 2016 on the Sankt Annafirn, Findelen- and Griesgletscher, situated in the Swiss Alps. Three surveys at the Sankt Annafirn allowed for a full glacier coverage, four surveys at Griesgletscher allowed an almost full glacier coverage and seven surveys at Findelengletscher allowed for a partial coverage of the glacier tongue (see individual datasets for exact extent). For each survey, a high resolution orthoimage and a Digital Surface Model (DSM) was created.
 UAV surveys:
Prior flight, Ground Control Points (GCPs) were deployed on the glacier surface and measured with a differential GPS (Trimble R7 or Leica GPS 1200). They allowed precise georeferencing of the UAV-derived datasets. UAV flight plans were planned with the software *eMotion 2* and a SenseFly eBee was used as surveying platform. The images were then processed with the software Agisoft Photoscan Pro 1.1.6 .
The location and dates of each survey can be found in the table together with the number of flights performed (Nflights), the number of acquired images (Nimages), the number of GCPs set (NGCPs) and the surveyed area.
A folder for each dataset is available (see folder name in table), which contains:
- An orthoimage *glacier_date_photoscan_oi_CH1903+_LV95_0.1m.tif*
- A Digital Surface Model *glacier_date_photoscan_dsm_CH1903+_LV95_0.1m.tif*
- The Agisoft Photoscan automatic processing report *glacier_date_photoscan_report.pdf*
where:
- *glacier* is the name of the surveyed glacier
- *date* is the date of the UAV image acquisition
- *photoscan* is the name of the photogrammetric software
- *oi* or *dsm* the type of dataset
- *CH1903+_LV95* is the coordinate system and datum of the dataset
- *0.1m* is the resolution of the dataset in meter
- *.tif* is the extention of the dataset
 
Details about the UAV surveys, the image processing and the accuracy of the UAV-derived products can be found in this publication below.
Paper Citation:
 - _Gindraux et al. 2017. Accuracy Assessment of Digital Surface Models from Unmanned Aerial Vehicles’Imagery on Glaciers, Remote Sensing, 9, 186, 1-15, [doi: 10.3390/rs9020186](https://doi.org/10.3390/rs9020186)._
The folder UAV_flight_paths.zip contains all UAV flights performed on the Sankt Annafirn, Findelengletscher and Griesgletscher. The flights were planned with the software eMotion2 and have the .afp extention.
description: Resource Title: Bulk Data Access
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 Format: No Info
 URL: https://envicloud.wsl.ch/#/?prefix=doi/envidat.48
 Description: Link to the S3 bucket where all the data resources can be downloaded in bulk
description: Resource Title: datasets_overview
 Size: 1681404 bytes
 Format: .pdf
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.48/uav-datasets-for-three-alpine-glaciers/datasets_overview.pdf
 Description: This .pdf contains an orthoimage for each dataset as well as a Table which displays the number of flights made, image acquired, number of GCP set and the total area covered.
description: Resource Title: stanna_20150415
 Size: 780690371 bytes
 Format: .zip
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.48/uav-datasets-for-three-alpine-glaciers/stanna_20150415.zip
 Description: This .zip folder contains:

 - An orthoimage (oi) of 0.1m resolution

- A Digital Surface Model (dsm) of 0.1m resolution

- The Agisoft Photoscan automatic processing report 

for the UAV field campaign conducted on the Sankt Annafirn on the 15th of April 2015.
description: Resource Title: stanna_20150715
 Size: 813185979 bytes
 Format: .zip
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.48/uav-datasets-for-three-alpine-glaciers/stanna_20150715.zip
 Description: This .zip folder contains:

 - An orthoimage (oi) of 0.1m resolution

- A Digital Surface Model (dsm) of 0.1m resolution

- The Agisoft Photoscan automatic processing report 

for the UAV field campaign conducted on the Sankt Annafirn on the 15th of July 2015.
description: Resource Title: stanna_20150928
 Size: 957278925 bytes
 Format: .zip
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.48/uav-datasets-for-three-alpine-glaciers/stanna_20150928.zip
 Description: This .zip folder contains:

 - An orthoimage (oi) of 0.1m resolution

- A Digital Surface Model (dsm) of 0.1m resolution

- The Agisoft Photoscan automatic processing report 

for the UAV field campaign conducted on the Sankt Annafirn on the 28th of September 2015.
description: Resource Title: findelen_20150409
 Size: 2943574039 bytes
 Format: .zip
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.48/uav-datasets-for-three-alpine-glaciers/findelen_20150409.zip
 Description: This .zip folder contains:

 - An orthoimage (oi) of 0.1m resolution

- A Digital Surface Model (dsm) of 0.1m resolution

- The Agisoft Photoscan automatic processing report 

for the UAV field campaign conducted on the Findelengletscher on the 09th of April 2015.
description: Resource Title: findelen_20150721
 Size: 2465299515 bytes
 Format: .zip
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.48/uav-datasets-for-three-alpine-glaciers/findelen_20150721.zip
 Description: This .zip folder contains:

 - An orthoimage (oi) of 0.1m resolution

- A Digital Surface Model (dsm) of 0.1m resolution

- The Agisoft Photoscan automatic processing report 

for the UAV field campaign conducted on the Findelengletscher on the 21th of July 2015.
description: Resource Title: findelen_20160419
 Size: 2164463488 bytes
 Format: .zip
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.48/uav-datasets-for-three-alpine-glaciers/findelen_20160419.zip
 Description: This .zip folder contains:

 - An orthoimage (oi) of 0.1m resolution

- A Digital Surface Model (dsm) of 0.1m resolution

- The Agisoft Photoscan automatic processing report 

for the UAV field campaign conducted on the Findelengletscher on the 19th of April 2016.
description: Resource Title: findelen_20160830
 Size: 2101212707 bytes
 Format: .zip
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.48/uav-datasets-for-three-alpine-glaciers/findelen_20160830.zip
 Description: This .zip folder contains:

 - An orthoimage (oi) of 0.1m resolution

- A Digital Surface Model (dsm) of 0.1m resolution

- The Agisoft Photoscan automatic processing report 

for the UAV field campaign conducted on the Findelengletscher on the 30th of August 2016.
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 Size: 3002624298 bytes
 Format: .zip
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.48/uav-datasets-for-three-alpine-glaciers/findelen_20160922.zip
 Description: This .zip folder contains:

 - An orthoimage (oi) of 0.1m resolution

- A Digital Surface Model (dsm) of 0.1m resolution

- The Agisoft Photoscan automatic processing report 

for the UAV field campaign conducted on the Findelengletscher on the 22th of September 2016.
description: Resource Title: findelen_20150920
 Size: 3185830469 bytes
 Format: .zip
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.48/uav-datasets-for-three-alpine-glaciers/findelen_20150920.zip
 Description: This .zip folder contains:

 - An orthoimage (oi) of 0.1m resolution

- A Digital Surface Model (dsm) of 0.1m resolution

- The Agisoft Photoscan automatic processing report 

for the UAV field campaign conducted on the Findelengletscher on the 15th of September 2015.
description: Resource Title: findelen_20160702
 Size: 3135905280 bytes
 Format: .zip
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.48/uav-datasets-for-three-alpine-glaciers/findelen_20160702.zip
 Description: This .zip folder contains:

 - An orthoimage (oi) of 0.1m resolution

- A Digital Surface Model (dsm) of 0.1m resolution

- The Agisoft Photoscan automatic processing report 

for the UAV field campaign conducted on the Findelengletscher on the 2nd of July 2016.
description: Resource Title: gries_20150803
 Size: 3678514763 bytes
 Format: .zip
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.48/uav-datasets-for-three-alpine-glaciers/gries_20150803.zip
 Description: This .zip folder contains:

 - An orthoimage (oi) of 0.1m resolution

- A Digital Surface Model (dsm) of 0.1m resolution

- The Agisoft Photoscan automatic processing report 

for the UAV field campaign conducted on the Griesgletscher on the 3rd of August 2015.
description: Resource Title: gries_20160913
 Size: 3592468237 bytes
 Format: .zip
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.48/uav-datasets-for-three-alpine-glaciers/gries_20160913.zip
 Description: This .zip folder contains:

 - An orthoimage (oi) of 0.1m resolution

- A Digital Surface Model (dsm) of 0.1m resolution

- The Agisoft Photoscan automatic processing report 

for the UAV field campaign conducted on the Griesgletscher on the 13th of September 2016.
description: Resource Title: gries_20150926
 Size: 3793037626 bytes
 Format: .zip
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.48/uav-datasets-for-three-alpine-glaciers/gries_20150926.zip
 Description: This .zip folder contains:

 - An orthoimage (oi) of 0.1m resolution

- A Digital Surface Model (dsm) of 0.1m resolution

- The Agisoft Photoscan automatic processing report 

for the UAV field campaign conducted on the Griesgletscher on the 26th of September 2015.
description: Resource Title: gries_20160815
 Size: 3942636963 bytes
 Format: .zip
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.48/uav-datasets-for-three-alpine-glaciers/gries_20160815.zip
 Description: This .zip folder contains:

 - An orthoimage (oi) of 0.1m resolution

- A Digital Surface Model (dsm) of 0.1m resolution

- The Agisoft Photoscan automatic processing report 

for the UAV field campaign conducted on the Griesgletscher on the 15th of August 2015.
description: Resource Title: UAV_flight_paths
 Size: 5116350 bytes
 Format: .zip
 URL: https://os.zhdk.cloud.switch.ch/envicloud/doi/envidat.48/uav-datasets-for-three-alpine-glaciers/uav_flight_paths.zip
 Description: This folder contains all UAV flights paths that we created for the Sankt Annafirn, the Findelengletscher and Griesgletscher. They have been created with the software eMotion2, that was developped for the eBee platform from Sensefly.