Butangbunasi landslide and landslide-dammed lake outlines based on Landsat time series with respect to typhoons
Authors/Creators
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1.
University of Salzburg
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2.
National Cheng Kung University
Description
This repository contains an updated version of the data created and described by Hölbling et al. (2020), specifically the landslide and landslide-dammed lake outlines mapped using an object-based image analysis (OBIA) workflow, summary statistics and further information regarding the landslide and lake mapping, and a table with the typhoons and tropical storms selected for the study of the evolution of the Butangbunasi landslide in Taiwan from 1984 to 2018.
The update consists of the addition of a landslide and lake outline for the year 2021 following the tropical storm Lupit.
Further information on the methodology and data used are explained in Hölbling et al. (2020).
Landslide and landslide-dammed lake outlines
Convention for file naming:
Butangbunasi_YYYY or Butangbunasi_YYYY_MM_DD when several mappings per year were carried out.
YYYY corresponds to the year of the Landsat satellite imagery.
Cartographic specifications:
Cartographic projection: WGS 84 / UTM zone 51N (EPSG: 32651)
Vector data format: GeoPackage
OBIA statistics (Butangbunasi_OBIA_statistics.csv)
Column descriptions:
| satellite_sensor | Satellite from which the outlines were generated |
| date | Acquisition date of the satellite imagery |
| landslide_area_ha | Total area in hectares of the landslide |
| lake_area_ha | Total area in hectares of the landslide-dammed lake |
| file | File name corresponding to the landslide and lake mapping summary |
Typhoons (Butangbunasi_typhoons.csv)
Table derived from the International Best Track Archive for Climate Stewardship (IBTrACS) v.4 dataset.
Includes the location per storm closest to the Butangbunasi landslide study area.
These typhoons were identified as the ones causing a significant change in landslide area, based on visual inspection of pre- and post-event satellite imagery.
Typhoon dates were used as a marker to find and select satellite imagery for subsequent mapping.
Column descriptions:
| SID | Storm Identifier |
| NAME | Name provided by the agency. IBTrACS ignores most names that include digits or abbreviations |
| SEASON | Year |
| USA_SSHS | Saffir-Simpson Hurricane Scale information based on the wind speed provided by the US agency wind speed (US agencies provide 1-minute wind speeds) -5 = Unknown [XX] -4 = Post-tropical [EX, ET, PT] -3 = Miscellaneous disturbances [WV, LO, DB, DS, IN, MD] -2 = Subtropical [SS, SD] Tropical systems classified based on wind speeds [TD, TS, HU, TY,, TC, ST, HR] -1 = Tropical depression (W<34) 0 = Tropical storm [34<W<64] 1 = Category 1 [64<=W<83] 2 = Category 2 [83<=W<96] 3 = Category 3 [96<=W<113] 4 = Category 4 [113<=W<137] 5 = Category 5 [W >= 137] |
| ISO_TIME | ISO Time provided in Universal Time Coordinates (UTC). Format is YYYY-MM-DD HH:mm:ss |
| DIST2LAND | Distance (km) to land from the current position. The land dataset includes all continents and any islands larger than 1400 km^2. The distance is the nearest at the present time in any direction |
| maxSSHS | The maximum SSHS category recorded during the storm trajectory |
| dist2aoi_km | Distance (km) to the Butangbunasi landslide site |
Files
Butangbunasi_OBIA_statistics.csv
Additional details
Funding
Dates
- Other
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1984-12-12/2021-08-28Date of first and last landslide and landslide-dammed lake delineation
References
- Hölbling, D., Abad, L., Dabiri, Z., Prasicek, G., Tsai, T.-T., & Argentin, A.-L. (2020). Mapping and Analyzing the Evolution of the Butangbunasi Landslide Using Landsat Time Series with Respect to Heavy Rainfall Events during Typhoons. Applied Sciences (Switzerland), 10(2), Artikel 630. https://doi.org/10.3390/app10020630
- Hölbling, D., Dabiri, Z., Tsai, T.-T., Prasicek, G., Tsui , C. Y., Schäffer, L., Argentin, A.-L. M., & Abad, L. (2019). Mapping the Evolution of the Butangbunasi Landslide, Taiwan, using Landsat Time Series. in 27th IUGG General Assembly: Abstract Book https://www.czech-in.org/cmPortalV15/CM_W3_Searchable/iugg19/normal#!abstractdetails/0000728040
- Prasicek, G., Hölbling, D., Argentin, A.-L. M., Abad, L., & Dabiri, Z. (2021). Detection and analysis of landslide-induced river course changes and lake formation (RiCoLa): Final Project Report. Verlag der Österreichischen Akademie der Wissenschaften. https://doi.org/10.1553/ESS-RiCoLa