Scientific-data emergency response service for the 26 August 2026 debris-flow disaster in Gyirong County, Shigatse, Xizang

Completed catalogue assessment

Eligibility decision

Include · Include

Assessment date

28 September 2026

Decision reason

The native provider table identifies a heterogeneous, event-specific public emergency collection with file-level contributor attribution and a documented no-cost access/application pathway. Retain the 69 inventoried file records with individual decisions; do not add newly listed files after the fixed search cutoff or imply a common acquisition date, method or validation status.

Metadata corrections

["Replace stale 72-asset wording with the 69 inventoried assets and their assessment counts; live listing size is a separate mutable quantity.","Replace permanent direct_open access claim with time-limited anonymous access followed by the documented application route.","Do not infer DEM source/epoch or post-event acquisition from event-prefixed filenames."]

• https://www.ncdc.ac.cn/portal/emergency?eid=674669dd-ea53-4433-8c2b-e839e86d721c
• https://www.ncdc.ac.cn/portal/about/cc_by_4_0
• https://www.ncdc.ac.cn/portal/about/data_aggregation_collection

View the complete assessment and exclusion ledger.

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

28 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]View in map

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. Preserve per-file uncertainty; do not assign blanket CC BY 4.0 or unrestricted redistribution.

Access and reuse

Access

Direct Open; open access route

Licence

Not verified

Redistribution

Unclear

Catalogue status

Included

Provider page

Open authoritative resource page

Authoritative metadata sources

• Source 1: www.ncdc.ac.cn
• Source 2: www.ncdc.ac.cn
• Source 3: www.ncdc.ac.cn