# Event-SAR sample gallery

[Back to the dataset](https://huggingface.co/datasets/GFM-Bench/Event-SAR)

Six display-only samples: three earthquake and three volcano examples, one per existing review tier: Fair, Good, and Excellent. These are descriptive labels for the original reviewer ratings, not new measurements or coverage categories. Within each tier, selection uses the middle shared-coverage rank among remaining distinct events. This is an illustrative selection, not a random statistical sample.

Each image shows all five acquisition-pair stages and all available orbits. Columns are stages; rows are reference VV, secondary VV, coherence, and wrapped phase. Checkerboards mark missing pixels. Shared coverage intersects VV, coherence and phase over every saved stage and orbit; panel labels are individual raster coverage.

VV uses one shared 2nd–98th percentile linear stretch per patch. Coherence uses 0–1 (viridis); phase uses −π–π (cyclic twilight). Previews are downsampled with nearest-neighbor sampling and JPEG encoded for display; the released arrays remain lossless. VH, DEM, slope and incidence are included in the dataset but omitted from this gallery.

### Review rating distribution

Counts cover the full released dataset, not just the six examples. Review ratings and valid coverage are separate measures.

![Patch counts by review rating for earthquakes and volcanoes](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/review_counts.png)

| Event type | Fair | Good | Excellent | Total |
|---|---:|---:|---:|---:|
| Earthquake | 97 | 82 | 135 | 314 |
| Volcano | 23 | 52 | 27 | 102 |

[Download SVG](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/review_counts.svg) · [Counts CSV](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/review_counts.csv)


## Earthquake — Fair · us2000bqsn

Patch `r3440:c2040:s1024` · sample `000000000186` · shared coverage **99.8483%**

![earthquake us2000bqsn five-stage SAR preview](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/images/000000000186.jpg)

## Earthquake — Good · us7000irp8

Patch `r5976:c4108:s1024` · sample `000000000296` · shared coverage **99.8646%**

![earthquake us7000irp8 five-stage SAR preview](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/images/000000000296.jpg)

## Earthquake — Excellent · us20003k7w

Patch `r5032:c5448:s1024` · sample `000000000124` · shared coverage **99.9266%**

![earthquake us20003k7w five-stage SAR preview](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/images/000000000124.jpg)

## Volcano — Fair · gvp_312030_22129

Patch `event_center_s1024` · sample `000000000392` · shared coverage **99.8590%**

![volcano gvp_312030_22129 five-stage SAR preview](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/images/000000000392.jpg)

## Volcano — Good · gvp_273010_22151

Patch `event_center_s512` · sample `000000000357` · shared coverage **99.8589%**

![volcano gvp_273010_22151 five-stage SAR preview](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/images/000000000357.jpg)

## Volcano — Excellent · gvp_252120_22319

Patch `event_center_s512` · sample `000000000320` · shared coverage **99.8020%**

![volcano gvp_252120_22319 five-stage SAR preview](https://huggingface.co/datasets/GFM-Bench/Event-SAR/resolve/main/previews/images/000000000320.jpg)