Pre-event Gaofen-4 PMI imagery

Original title西藏日喀则市吉隆县泥石流灾害（20260826）GF4_PMI-before.zip

zip · 643.5 MiB · National Cryosphere Desert Data Center

Screening and metadata review

Baseline candidate · Metadata assessed 6 September 2026

Reachable without registration · Direct Open · checked 6 September 2026

Screening findings and extracted metadata

Automated metadata and technical review. Resource eligibility and manuscript inclusion are separate decisions.

Inspection basis: Metadata And Structure Reviewed
Temporal assessment: Pre Event
Provider: National Cryosphere Desert Data CenterSource Recorded · source · catalogue contributor
Dataset family: Gaofen-4Source Recorded · source · catalogue dataset family
Linked file format: zipSource Recorded · source · catalogue file_format
Rights statement: No asset-specific licence is stated on the event page.Source Recorded · source · catalogue rights_note
Source observation start: 2026-02-16Source Recorded · source · catalogue temporal_start
Source observation end: 2026-02-16Source Recorded · source · catalogue temporal_end
Provider-stated file bytes: 674777873Source Recorded · source · catalogue provider-stated size
HTTP response size: 674777873Observed Http · source · HTTP HEAD Content-Length or Content-Range total; compressed transfer length may differ
Source identifier: d35c4bbb-864e-4653-b490-97e4af6844f8Derived From Metadata · source · Source URL component identifier; not a DOI or independent scene identity
File coordinate system: Not stated
File pixel spacing: Not stated
Source bounds (west, south, east, north): Not stated
Licence identifier: Not stated

Earlier structure findings are retained with their inspection date; the current HTTP check does not establish byte-for-byte identity with that earlier file.

Geographic coverage: No asset-level bounding box is stated. Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider.
Temporal coverage: 16 February 2026
Temporal role: Pre Event Reference
Catalogue asset identifier: ast-d8f0fac7-8aa5-5e3d-97f2-85e1ec9dff28
Parent resource: Scientific-data emergency response service for the 26 August 2026 debris-flow disaster in Gyirong County, Shigatse, Xizang
Original-title language: Chinese
English-title status: Not verified
Dataset or product family: Gaofen-4
Coordinate reference system: Not stated
Spatial resolution: Not stated

Access result: Reachable without registration
Access checked: 6 September 2026
Media type: application/zip
File format: zip
File size: 643.5 MiB
Licence: Not verified — No asset-specific licence is stated on the event page
Redistribution: Redistribution not authorized
Catalogue status: Reviewed

Host or aggregator: National Cryosphere Desert Data Center
Listed contributor: 国家冰川冻土沙漠科学数据中心
Normalized contributor: National Cryosphere Desert Data Center
Source role: NCDC Listed Contributor
Upstream source: not stated or not resolved
Upstream evidence: Unresolved
Relationship to resource: event-specific pre-event or post-event imagery package; exact scene/product relationship not stated
Provenance: Not verified
Method documentation: Not Stated At Asset Level On Event Page
Metadata reviewed: 3 September 2026
Technical inspection: Archive directory lists 2 members; formats .gz (1), [no extension] (1)