Pre-event Sentinel-1 GRD high-resolution descending imagery
Chinese西藏日喀则市吉隆县泥石流灾害（20260826）Sentinel-1_GRD-HD-DESCENDING-before.zip
Earth Observation Imagery Or Product
Dataset Specifications
| Packaged contents | 6 files in archive Member formats: |
|---|---|
| Spatial extent | Parent resource coverage: Gyirong County and Port, Shigatse, Xizang; the Nepal side and China–Nepal transport corridor are referenced by the provider. |
| Temporal coverage | 19 August 2026 to 24 August 2026Pre Event Reference · Period: 2026–2026 |
| Source & contributor | National Cryosphere Desert Data Center | GEOVIS Earth Big Data Center | GEOVIS Earth DataDailyOriginal provider: 国家冰川冻土沙漠科学数据中心；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Host platform: National Cryosphere Desert Data Center |
| Parent collection | Scientific-data emergency response service for the 26 August 2026 debris-flow disaster in Gyirong County, Shigatse, Xizang |
| Format & size | ZIP · 3.7 GiB · application/zip |
| Licence & access | Initial Public Window Then Provider Application · No Asset Specific Reuse Grant Established — No individual emergency-file licence is confirmed. General NCDC policy refers to a CC BY default while also listing other CC variants and controlled-access exceptions; upstream contributors retain relevant rights |
| Lineage & documentation | Not stated at asset level |
Catalogue assessment and metadata evidenceAssessment recorded
Completed catalogue decisions are recorded separately from technical inspection and scientific validation. Access and metadata evidence retain their original dates and scope.
Completed catalogue assessment
- Eligibility decision
- Include · Include
- Assessment date
- 28 September 2026
- Decision reason
- The exact file ID and native title occur in the original event-specific provider table. The endpoint returns an archive/spreadsheet content type. Include for the documented earth observation imagery or product role; technical accessibility does not validate the underlying measurements or interpretations.
- Information role
- Earth Observation Imagery Or Product
- Scientific validation
- not_performed_by_catalogue_review
- Access assessment
- Provider states anonymous downloads during first 30 days, then an application recording identity, institution, use category and reason. No application submitted. Current HEAD responses do not demonstrate authorization for reuse.
- Rights assessment
- No individual emergency-file licence is confirmed. General NCDC policy refers to a CC BY default while also listing other CC variants and controlled-access exceptions; upstream contributors retain relevant rights.
- Assessment evidence
Included baseline · Metadata assessed 6 September 2026
Authorization required; general access not established · Provider Application · checked 6 September 2026