Pre-event HJ-2B CCD imagery

Original title西藏日喀则市吉隆县泥石流灾害（20260826）HJ2B-CCD_before.zip

zip · 3.0 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: National Cryosphere Desert Data Center | National Satellite Ocean Application ServiceSource Recorded · source · catalogue contributor
Dataset family: HJ-2BSource Recorded · source · catalogue dataset family
Linked file format: zipSource Recorded · source · catalogue file_format
Rights statement: No asset-specific licence was found.Source Recorded · source · catalogue rights_note
Source observation start: 2026-02-18Source Recorded · source · catalogue temporal_start
Source observation end: 2026-08-25Source Recorded · source · catalogue temporal_end
Provider-stated file bytes: 3230870212Source Recorded · source · catalogue provider-stated size
HTTP response size: 3230870212Observed Http · source · HTTP HEAD Content-Length or Content-Range total; compressed transfer length may differ
Source identifier: f0c78b62-3411-47e9-8482-e7301f1ef6fdDerived 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: 18 February 2026 to 25 August 2026
Temporal role: Pre Event Reference
Catalogue asset identifier: ast-bcce873b-7815-5879-9c49-4d91713448ba
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: HJ-2B
Coordinate reference system: Not stated
Spatial resolution: Not stated

Host or aggregator: National Cryosphere Desert Data Center
Listed contributor: 国家冰川冻土沙漠科学数据中心；国家卫星海洋应用中心
Normalized contributor: National Cryosphere Desert Data Center | National Satellite Ocean Application Service
Source role: NCDC Listed Contributor | NSOAS Listed Contributor Or Distributor
Upstream source: National Satellite Ocean Application Service is the listed contributor/distributor; the filename identifies HJ-2B
Upstream evidence: Listed Contributor 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 (3)