Tenacious Search
Database pioneer Dr. Jim Gray is missing off the coast of Northern California. He set out alone on Sunday, January 28, 2007, intending to scatter his mother's ashes near the Farallon Islands. He was reported missing by his wife Sunday evening when he failed to return and did not respond to cell phone calls. The search is on for his 40-foot sail boat, the Tenacious. The last ping from his cell phone arrived at 11:50am, probably as he sailed out of range outbound to the Farallons. The last possible sighting was by a U.S. Fish and Wildlife intern who saw a "reddish" sailboat "sometime in the early afternoon" on Sundary between Southeast Farallon and Middle Farallon islands. The observer indicated that the boat appeared to be heading either north or west and was NOT "heading south or on a course that would have brought it back around the south side of the island".
CSR has created a map of this scenario showing the locations of Southeast and Middle Farallon islands and the drift track of the buoy dropped in the vicinity by the US Coast Guard on Monday, 1/29/2007.
New for Tuesday, 3/6/2007
New: Search Area Boundaries and Imagery Extents - a 24-in by 30-in poster showing the outlines for the total USCG search and the total extent for each imagery acquisition. Available as a PDF (915 KB) or a JPG (3343 KB)
New: Search Vectors and Imagery Footprints - a 24-in by 30-in poster showing the USCG search patterns and the footprints for each imagery acquisition. Available as a PDF (919 KB) or a JPG (4567 KB).
Recent Updates
2/13/2007: Added a new section for links
2/13/2007: Added new shapefiles for search-related vector data
2/13/2007: The planning graphic shows the boundary of the US Coast Guard search area from 2/1 and the footprint extents of DG QuickBird, RSI Radarsat and NASA ER-2 DCS imagery currently available from SDSC. The graphic also shows the footprint extents of GeoEye IKONOS imagery that was captured on 2/2. PDF (191 KB) JPEG (640 KB)
Data for Search Efforts
- DigitalGlobe has posted QuickBird natural color imagery captured around 11:42am PDT Saturday, 02/03/2007. The data are distributed as 0.6-meter GeoTIFF files (approx. 200 MB each).
- Shapefile of points showing the drift of a buoy dropped by the US Coast Guard on 1/29/2007. Data run through 16:30Z on 2/2/2007. Created by CSR from USCG tabular data.
- Shapefile of US Coast Guard search vectors from 2/1/2007. Created by CSR from USCG image.
- Shapefiles of search-related vector data:
- DigitalGlobe has posted two versions of QuickBird imagery captured Thursday 02/
01/2007:
- Visible color 0.6-meter GeoTIF tiles (approx. 1.2 GB each)
- Panchromatic 0.82-meter GeoTIF tiles (approx. 130 MB each)
- RSI has provided access to two RADARSAT datasets from which CSR has created filtered RADARSAT products:
Summary of the image footprints from the released aerial and satellite sensor collections: ER-2 aerial photography (purple), DigitalGlobe QuickBird satellite imagery for 2/1/2007 (yellow) DigitalGlobe QuickBird satellite imagery for 2/1/2007 (light blue) and RSI RADARSAT satellite imagery from 1/31/2007 (pink) and 2/3/2007 (red). New DigitalGlobe QuickBird data were collected on 2/2 (solid orange) and are undergoing processing. US Coast Guard search vectors for 1/29/2007 are shown in dark blue.
RSI RADARSAT imagery collected on Saturday, 2/3/2007
Description: Synthetic aperture radar satellite data; Resolution: 12.5-meters; Format: GeoTIFF; Projection: UTM Zone 10, NAD 83
CSR has filtered the synthetic aperture radar data using an enhanced Lee filter and created an image mosaic of the results. Download the filtered product as a GeoTIF (292 MB) or as GeoJPEG2000 (200 MB).
The image below shows the 02/03/2007 RADARSAT image tiles in relation to the San Francisco Bay Area. Click on a tile to download the filtered GeoTIF product (approx. 450 MB) from the Center for Space Research.
RSI RADARSAT imagery collected on Wednesday, 1/31/2007.
Description: Synthetic aperture radar satellite data; Resolution: 12.5-meters; Format: GeoTIFF; Projection: UTM Zone 10, NAD 83
CSR has filtered the synthetic aperture radar data using an enhanced Lee filter and created an image mosaic of the results. Download the filtered product as a GeoTIF (381 MB) or as GeoJPEG2000 (281 MB).
The image below shows the 01/31/2007 RADARSAT image tiles in relation to the San Francisco Bay Area. Click on a tile to download the filtered GeoTIF product (approx. 450 MB) from the Center for Space Research.
Download DigitalGlobe QuickBird visible color imagery.
Description: 0.6-meter visible color satellite imagery; Format: GeoTIFF; File-size: 1.20 GB
The image below shows the DigitalGlobe QuickBird image tiles in relation to the San Francisco Bay area and the Farallon Islands. Click on a tile to download the TIF image (approx. 1.2 GB) from the San Diego Supercomputer Center.
Download DigitalGlobe QuickBird visible color imagery.
Description: 0.6-meter visible color satellite imagery; Format: GeoTIFF; File-size: 1.20 GB
The image below shows the DigitalGlobe QuickBird image tiles in relation to the northern Channel Islands. Click on a tile to download the TIF image (approx. 1.2 GB) from the San Diego Supercomputer Center.
Download DigitalGlobe QuickBird panchromatic imagery.
Description: 0.82-meter panchromatic satellite imagery; Format: GeoTIFF; File-size: 120 MB
The image below shows the DigitalGlobe QuickBird image tiles in relation to the northern Channel Islands. Click on a tile to download the TIF image (approx. 130 MB) from the San Diego Supercomputer Center.
Links
Analysis
- Results of image and flow analyses at Johns Hopkins University
Search Efforts
- Tenacious search blog
- Search for Jim - help by hanging a poster.
- Location of Jim Gray MISSING posters.