Pre-event Gaofen-3 5 m SAR imagery

Original title西藏日喀则市吉隆县泥石流灾害（20260826）GF3 5m-SAR_before.zip

zip · 2.2 GiB · 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: GEOVIS Earth Big Data Center | GEOVIS Earth DataDailySource Recorded · source · catalogue contributor
Dataset family: Gaofen-3Source Recorded · source · catalogue dataset family
Linked file format: zipSource Recorded · source · catalogue file_format
Rights statement: No asset-specific licence or redistribution terms are stated.Source Recorded · source · catalogue rights_note
Source observation start: 2026-07-05Source Recorded · source · catalogue temporal_start
Source observation end: 2026-08-03Source Recorded · source · catalogue temporal_end
Source resolution: 5mSource Recorded · source · catalogue resolution; may describe source observation rather than linked file
Provider-stated file bytes: 2365001067Source Recorded · source · catalogue provider-stated size
HTTP response size: 2365001067Observed Http · source · HTTP HEAD Content-Length or Content-Range total; compressed transfer length may differ
Source identifier: 2d3c912c-ece5-412d-99f7-9985f2fc0d46Derived 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: 5 July 2026 to 3 August 2026
Temporal role: Pre Event Reference
Catalogue asset identifier: ast-2e6860f0-c172-5bc4-a2f6-85b43debf05d
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: Confirmed
Dataset or product family: Gaofen-3
Coordinate reference system: Not stated
Spatial resolution: 5m

Access result: Reachable without registration
Access checked: 6 September 2026
Media type: application/zip
File format: zip
File size: 2.2 GiB
Licence: Not verified — No asset-specific licence or redistribution terms are stated
Redistribution: Redistribution not authorized
Catalogue status: Reviewed

Host or aggregator: National Cryosphere Desert Data Center
Listed contributor: 中科星图地球大数据中心 & 数据来源平台：GEOVIS Earth DataDaily 星图地球今日影像
Normalized contributor: GEOVIS Earth Big Data Center | GEOVIS Earth DataDaily
Source role: GEOVIS Center Listed Contributor | GEOVIS Earth DataDaily Listed Source Platform
Upstream source: GEOVIS Earth DataDaily is the listed source platform; filename identifies Gaofen-3
Upstream evidence: Source Platform And Mission Family Established; Exact Scene Lineage 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 3 members; formats .gz (2), [no extension] (1)