| Project: | Opportunistic Mapping of the Izu-Bonin Trench |
| Instrument: | Kongsberg EM124 |
| All Bathy/Relief | Coastal | DEM Portal | Fishing | Global | Lakes | Multibeam | NOS |
| Ship Name: | Pressure Drop |
| Chief Scientist: | Bongiovanni, Cassie Caladan Oceanic LLC |
| Source Organization: | Caladan Oceanic LLC |
| Start Date: | 2020-07-21 |
| End Date: | 2020-07-28 |
Multibeam Bathymetry

| Project: | Opportunistic Mapping of the Izu-Bonin Trench |
| Instrument: | Kongsberg EM124 |

| Number of Files: | 160 |
| Number of Records: | 12748 |
| BATHYMETRY DATA | Quantity | Percentage |
|---|---|---|
| Number of Beams | 6526976 | 100% |
| Number of Good Beams | 6117977 | 93.73% |
| Number of Zero Beams | 0 | 0% |
| Number of Flagged Beams | 408999 | 6.27% |

| Total Time: | 72.5908 hours |
| Total Track Length: | 1303.7592 km |
| Average Speed: | 17.96 km/hr (9.6976 knots) |

| Northern Extent: | 35.805138 |
| Southern Extent: | 24.453955 |
| Western Extent: | 141.85336 |
| Eastern Extent: | 143.48729 |

| Minimum Sonar Depth | 0 | Maximum Sonar Depth | 0 |
| Minimum Altitude | 3.28 | Maximum Altitude | 9804.791 |
| Minimum Depth | 2772.9709 | Maximum Depth | 11379.6514 |
File Information


| Files | File Size | Description |
|---|---|---|
| IzuBonin_95Uncrt.xyz.gz | 56.50MB | xyz grid file provided by the originator |
| IzuBonin_Trench_100m.bag.gz | 259.39MB | Bathymetric Attributed Grid |
| IzuBonin_Trench_100m.bag.xml.gz | 16.2KB | Product Specific Metadata |
| IzuBonin_Trench_100m.tif.gz | 6.78MB | GeoTIFF survey image |
| IzuBonin_Trench_100m.xyz.gz | 109.44MB | xyz grid file provided by the originator |
| IzuBonin_mosaic_55m.tiff.gz | 30.69MB | GeoTIFF survey image |

| Files | File Size | Description |
|---|---|---|
| DSSVPD_IzuBonin_DAPR.pdf | 4.68MB | PDF metadata file |
| DSSVPD_IzuBonin_DR.pdf | 1.58MB | PDF metadata file |
| PD20IB02.txt | 0.8KB | Informal metadata text |

| Files | File Size | Description |
|---|---|---|
| soundspeed_raw.tar.gz | 32.2KB | Ancillary Data Files |
| qpd_projects.tar.gz | 178.58MB | Ancillary Data Files |
| qps_projects.tar.gz | 3899.23MB | Ancillary Data Files |
| soundspeed_processed.tar.gz | 4.1KB | Ancillary Data Files |