Animation of Ocean Models
Using ocean current models provided by the OurOcean group at JPL, we created an animated GIF, which shows where objects starting near the Farallons on the afternoon Jim disappeared would drift over the next 13 days. Relevant satellite and aerial imagery were obtained 2.6, 4.8, 5.1, and 5.8 days after the adopted zero point in time (Jan 29, 00:00 GMT). We are now reanalyzing the imagery that covers the convergence zones in the current models.
http://skydev.pha.jhu.edu/nieto/Tenacious/
The JHU group
Note: In addition to the movie, we have added the data as suggested by Igor Carron
February 14th, 2007 at 9:11 pm
Wow. That is very impressive. Hopefully you can get someone to go out there and look now. Keep up the amazing work…here’s to hoping he’s still on his boat eating canned goods.
February 15th, 2007 at 5:21 am
Jeff and Maria:
Can you please make available the gps coordinates of each of these crosses with time ?
Thanks,
Igor.
February 15th, 2007 at 7:59 am
Jeff and Maria:
I did some eyeball comparison based on the Radarsat data which because the cloud situation I think are a good starting point (just my point of view)
http://nuit-blanche.blogspot.com/2007/02/finding-jim-gray-approximate-data.html
Igor.
February 15th, 2007 at 9:41 am
Greate job !
February 15th, 2007 at 11:45 am
just for example, i guess we can use this type of imaging to find tenacious…
http://earth.esa.int/images/INSI/IIB/ERS1_32466_ERS2_12793_333_621/
February 16th, 2007 at 6:39 am
Query as “objects”.
Some objects such as a demasted yacht would drift differently than seat cushions, styrofoam cups and the like. Ofcourse a satellite is not going to spot a styrofoam cup and any such object would not be susceptible of being linked to a particular source. Life preservers would float for a long time, seat cushions eventually would become water logged or might have been well lashed down.
If the yacht is not visible and debris is not visible, I can not believe the 12,000 volunteers searching the images all missed things.
February 16th, 2007 at 8:35 am
With regards to multispectral data I just added some more evidence of the potential for using them:
http://nuit-blanche.blogspot.com/2007/02/finding-jim-gray-result-of-search-on.html
in particular, since the clouds were so bad, it looks like only Feb 3 provided some good imagery:
http://nuit-blanche.blogspot.com/2007/02/finding-jim-gray-result-of-search-on.html
in other words, it would provide a way of figuring out if any of the data of the drift model going south are legitimate items. I do not have access to landsat 7 images. I would guess that any remote sensing group working for the state of california would have a free access to those. The USGS route, not only involves payment but also a LONG delay as far as I recall.
Now, with regards to the other imagery:
astronaut acquired photographs:
http://nuit-blanche.blogspot.com/2007/02/finding-jim-gray-astronaut-acquired.html
my efforts have not yielded anything, so if somebody has an inside track there, please go ahead. My feedback has been that since the power went off on ISS this week-end and they are only three, very little activity could be unplanned.
With regards to Envisat (and the much coarser resolution), I do not have an inside track in that either and then there is the additional cloud issue:
http://nuit-blanche.blogspot.com/2007/02/finding-jim-gray-why-radar-should-be.html
yet I recall that Feb 12 yielded a less than 90 percent cloud cover. Once again, with multispectral data, we are really looking for high contrast detection, nothing like resolving the boat.
Igor.
February 16th, 2007 at 3:03 pm
Nice work Igor and others, in keeping the forward movement on imagery analysis and cross-correlation.
February 17th, 2007 at 9:00 am
Dear Igor & colleagues:
Do you or others see any radarsat, landsat, or other imagery hits in the vicinity of 350 nautical miles northwest of the Farallon Islands at a compass heading of about 325 degrees magnetic?
This approximate location seems to align with some of the drift modeling, just based on eyeballing what has been posted.
Thank you for any correlation info you may have.
Pls feel free to email me direct as well as post.
Fred Wood, fbwood@hotmail.com, cell 703-615-4910