Scientific-data emergency response service for the 26 August 2026 debris-flow disaster in Gyirong County, Shigatse, Xizang | Publicly Available Data Resources for the 2026 Nepal Glacier-Related Hazard Cascade

Identity and coverage

Catalogue identifier: res-92c8700c-d78d-54d9-a26c-5573d754767a
Original-title language: Chinese
English-title status: Not verified
Persistent identifier: 674669dd-ea53-4433-8c2b-e839e86d721c
Resource version: Mutable emergency collection; state observed 3 September 2026
Publication date: 26 August 2026
Last updated: 2 September 2026
Metadata reviewed: 3 September 2026
Language: Chinese
Geographic coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.
Bounding box (WGS 84): [84.34294264, 28.05127696, 86.3342723, 29.50568309]
Temporal coverage: Until 1 September 2026; Mixed
Themes: Earth Observation, Cryosphere, Terrain, Hydrology, Hazards, Exposure, Field Observations, Reference Geography

Method and provenance

Production method: No common production method is stated for the collection. Asset titles identify selected missions, sensors, resolutions, dates, and product types; methods vary by asset.
Provenance: NCDC hosts and aggregates the emergency collection. Forty-one of the 72 listed assets explicitly name at least one non-NCDC contributor. The exact upstream lineage and processing history are not stated consistently at asset level.
Validation: Unclear
Uncertainty: Acquisition dates, processing levels, accuracy, validation, and upstream lineage are incomplete or unstated for many assets. Four large archives did not expose an interpretable ZIP end record through bounded range inspection.
Limitations: The collection is heterogeneous and mutable. One listed endpoint returned HTTP 404 at the recorded check. Collection-wide and asset-specific reuse terms were not established, so no redistribution permission is inferred from access or from NCDC's general policy.

Access and reuse

Access: Direct Open; open access route
Licence: Not verified
Redistribution: Unclear
Catalogue status: Reviewed
Provider page: Open authoritative resource page

Assets

Historical earthquake epicentres (magnitude 3 and above)

WGS 84 bounding box: [85.18, 28.36, 85.8, 29.14]

zip · 3.6 KiB · Hazard Reference · Reachable without registration

Open asset Metadata assessed

Topographic factors

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 206.6 MiB · Terrain Or Elevation · Reachable without registration

Open asset Metadata assessed

Potential geohazard sites

WGS 84 bounding box: [84.67805556, 28.27944444, 85.65333333, 29.17916667]

zip · 11.0 KiB · Hazard Reference · Reachable without registration

Open asset Metadata assessed

Pre-event Landsat imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 6.3 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

26 August 2026 disaster-site location

WGS 84 bounding box: [85.33, 28.16, 85.3777, 28.27954]

zip · 1.7 KiB · Location Or Reference Geometry · Reachable without registration

Open asset Metadata assessed

Post-event HJ-2B CCD imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 2.0 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Basic geographic reference layers

WGS 84 bounding box: [85.07960537, 28.77587314, 85.63736566, 29.14445748]

zip · 84.0 KiB · Location Or Reference Geometry · Reachable without registration

Open asset Metadata assessed

Post-event PlanetScope 3 m digital orthophoto

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 602.6 MiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Post-event Gaofen-1C imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 5.6 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Post-event Gaofen-3B LJ1 imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 8.2 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Pre-event Gaofen-3C LJ1 imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 2.0 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Pre-event Gaofen-3 5 m SAR imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 2.2 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Post-event Gaofen-3C LJ1 imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 11.8 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Historical landslide locations

WGS 84 bounding box: [85.2324, 28.280278, 85.378889, 28.549225]

zip · 2.9 KiB · Hazard Reference · Reachable without registration

Open asset Metadata assessed

Post-event Gaofen-7 imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 7.9 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Pre-event ZY-1 02E imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 4.4 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

26 August 2026 debris-flow comparison map

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 21.7 MiB · Interpreted Comparison Product · Previously found to be an invalid archive

Follow-up needed

Pre-event Gaofen-2 PMS imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 1.0 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Township-level socioeconomic statistics, Gyirong County, 2020–2024

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

xlsx · 11.8 KiB · Population Or Socioeconomic Exposure · Reachable without registration

Open asset Metadata assessed

Pre-event MODIS imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 261.3 MiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Pre-event CBERS-04A MUX imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 135.3 MiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Post-event HJ-2E KSC imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 2.5 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Post-event CBERS-04A WPM imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 3.9 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Post-event Gaofen-3C KSC imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 6.0 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

China–Nepal corridor geohazard field surveys, 2021–2022 — spreadsheet archive

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 55.7 KiB · Field Observation · Reachable without registration

Open asset Metadata assessed

Post-event Gaofen-3B KSC imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 19.0 GiB · Earth Observation Imagery Or Product · Unavailable at the recorded check

Follow-up needed

Pre-event HJ-2A CCD imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 6.0 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Pre-event Sentinel-1 SLC ascending imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 4.3 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Land use, 2025 (10 m)

WGS 84 bounding box: [84.42944208, 28.23438601, 86.16496379, 29.34251619]

zip · 2.9 MiB · Land Or Soil Baseline · Reachable without registration

Open asset Metadata assessed

AVHRR snow-cover phenology, 1980–2020

WGS 84 bounding box: [84.45096599, 28.22570283, 86.200744, 29.3251787]

zip · 173.2 KiB · Cryosphere · Reachable without registration

Open asset Metadata assessed

Hydrological observations

WGS 84 bounding box: [84.45416669, 28.25437807, 86.15833335, 29.32104474]

zip · 424.5 KiB · Hydrology Or Surface Water · Reachable without registration

Open asset Metadata assessed

Pre-event Gaofen-3C imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 640.2 MiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Socioeconomic statistics, Gyirong County, 2020–2024

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

xlsx · 11.3 KiB · Population Or Socioeconomic Exposure · Reachable without registration

Open asset Metadata assessed

Post-event ZY-1 02F imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 2.1 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Post-event ZY-1 02E imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 8.8 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Post-event Gaofen-3C KSC imagery, 1 September 2026

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 6.3 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Post-event BC2 (Chaohu-1) imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 2.2 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

30 m digital elevation model

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 13.9 MiB · Terrain Or Elevation · Reachable without registration

Open asset Metadata assessed

Pre-event Sentinel-2A imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 154.7 MiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

MODIS daily cloud-free 500 m snow-cover area, 2025

WGS 84 bounding box: [84.455, 28.255, 86.16, 29.325]

zip · 2.5 MiB · Earth Observation Imagery Or Product | Cryosphere · Reachable without registration

Open asset Metadata assessed

Glacier inventory

WGS 84 bounding box: [84.474, 28.263, 86.137, 29.18]

zip · 861.8 KiB · Cryosphere · Reachable without registration

Open asset Metadata assessed

Post-event Gaofen-3C LJ1 imagery, 1 September 2026

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 11.4 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Post-event HJ-2F KSC imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 1.2 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Post-event Gaofen-1B PMS imagery, 1 September 2026

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 3.8 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Post-event Gaofen-6 WFV imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 7.5 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Pre-event Gaofen-3 KSC imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 8.6 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Pre-event Gaofen-7 imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 3.1 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Pre-event Sentinel-1 GRD high-resolution descending imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 3.7 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Pre-event 0.5 m digital orthophoto

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 2.6 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Pre-event Sentinel-1 GRD high-resolution ascending imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 3.8 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Pre-event Sentinel-1 SLC descending imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 8.6 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Pre-event Gaofen-1 PMS imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 708.2 MiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Pre-event HJ-2B CCD imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 3.0 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Post-event BC5 (Shenqi-02) imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 2.9 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Pre-event Gaofen-6 PMS imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 14.4 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

MODIS snow-cover phenology, 2000–2020

WGS 84 bounding box: [84.45274365, 28.25296485, 86.15780416, 29.32299271]

zip · 1.2 MiB · Earth Observation Imagery Or Product | Cryosphere · Reachable without registration

Open asset Metadata assessed

Post-event Gaofen-3 KSC imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 23.0 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Soil data

WGS 84 bounding box: [84.34294264, 28.05127696, 86.3342723, 29.50568309]

zip · 96.8 KiB · Land Or Soil Baseline · Reachable without registration

Open asset Metadata assessed

90 m digital elevation model

WGS 84 bounding box: [84.45552451, 28.25549414, 86.15635785, 29.32049414]

zip · 1.6 MiB · Terrain Or Elevation · Reachable without registration

Open asset Metadata assessed

12.5 m digital elevation model

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 70.3 MiB · Terrain Or Elevation · Reachable without registration

Open asset Metadata assessed

8 m digital elevation model

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 57.0 MiB · Terrain Or Elevation · Reachable without registration

Open asset Metadata assessed

Surface-water classification

WGS 84 bounding box: [84.455, 28.25531296, 86.15666667, 29.3211463]

zip · 23.9 KiB · Hydrology Or Surface Water · Reachable without registration

Open asset Metadata assessed

Pre-event Gaofen-4 PMI imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 643.5 MiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Seventh population census, Gyirong County

WGS 84 bounding box: [84.45079017, 28.25579656, 86.158269, 29.32171149]

zip · 43.2 KiB · Population Or Socioeconomic Exposure · Reachable without registration

Open asset Metadata assessed

Glacial-lake inventory

WGS 84 bounding box: [84.53373573, 28.13447172, 86.225605, 29.26336419]

zip · 97.7 KiB · Cryosphere · Reachable without registration

Open asset Metadata assessed

Pre-event CBERS-04 MUX imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 412.6 MiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Pre-event Gaofen-3B imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 499.8 MiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Post-event L-SAR 01A imagery (LT-1A)

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 9.2 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Pre-event Sentinel-2C imagery

Asset bounding box not stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.

zip · 4.4 GiB · Earth Observation Imagery Or Product · Reachable without registration

Open asset Metadata assessed

Identity and coverage

Method and provenance

Access and reuse

Assets

Authoritative metadata sources