Thermal search from Explorations Unknown
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Thread: Thermal search from Explorations Unknown

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  1. #1
    br
    Jul 2018
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    Thermal search from Explorations Unknown

    Just saw the episode where they are in S Africa. They wait for the ground to cool, and send up a thermal camera attached to a drone. It shows the heat signature, with GPS coordinates, and they search the site.
    The find a pistol, horseshoes, and other artefacts.

    This seems a reasonable search method. Has anyone tried this? Does it actually work?
    1637, AARC and T.C. like this.
    I love the taste of water, frozen into squares, and surrounded by rum

  2. #2
    us
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    Quote Originally Posted by xaos View Post
    Just saw the episode where they are in S Africa. They wait for the ground to cool, and send up a thermal camera attached to a drone. It shows the heat signature, with GPS coordinates, and they search the site.
    The find a pistol, horseshoes, and other artefacts.

    This seems a reasonable search method. Has anyone tried this? Does it actually work?
    It's the cost/benefit that really kills some of these methods.
    Like GPR, it's cool and works well but not exactly budget friendly.
    “During the gold rush its a good time to be in the pick and shovel business.” Mark Twain

  3. #3
    Charter Member
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    Pirate of the Martires

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    Quote Originally Posted by Icewing View Post
    not exactly budget friendly.
    Thermal camera: $115.
    https://www.ebay.com/itm/HT175-1024-...F0ay:rk:1:pf:0
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  4. #4
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    that was a great show.and i liked the one where they used lidar.he sure gets to use some cool stuff
    PetesPockets55 likes this.

  5. #5
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    Wood Butcher

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    I have a subcontractor I use to find water leaks with a thermal camera. $30,000 and it's 4(?) years old. And as the size is reduced to fit on a drone the cost probably increases. If I remember correctly it picks up temp differences of 1/10 of a degree (Not sure if it used C or F)
    It probably is limited to a certain depth depending on the mass of the object.

    Wonder if the drone thermal unit is used for larger items mostly?

  6. #6
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    ARC

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    So... where is the shipwreck ?

    Au_Dreamers likes this.
    DETECT WITH RESPECT - Have permission... Fill holes... Dispose of trash. - The Random Chat Thread - http://www.treasurenet.com/forums/ev...en-24-7-a.html

  7. #7
    br
    Jul 2018
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    So... where is the shipwreck ?
    Well now, that is the $Billion question!

    Given the size of the drone, this was not that special of a camera. The premise is interesting, as this same concept showed up in some of the original IR photographs taken by balloon in the early 1900's. The thermal differences showed up in the fields with the old river beds.

    I dont know how successful this would be over water, but I doubt it would be as good as land. Like everything else, it has a place, that is for sure.

    I am thinking perhaps voids and tunnels, artefacts, and other differences in temperature such as old river beds and roads.

    will look at the episode again, to see if the camera is noted.

    Like GPR, it's cool and works well but not exactly budget friendly.
    What about a SBP?

    I am surprised that some of you are not using your humminbirds on land....same concept!

    GPR used market
    Last edited by xaos; Jan 21, 2019 at 12:33 PM.
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    I love the taste of water, frozen into squares, and surrounded by rum

  8. #8
    us
    Dec 2010
    back on the 1715!!
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    They were looking for shipwrecks?
    AARC likes this.
    "The finding of a great treasure from the days of the Spanish Main is not the cherished dream of only the United States and Florida citizens; countless peoples from other lands have shared such thoughts. It would amaze and surprise most citizens of this country, when their dream, at the greatest of costs, was realized, the agents of respective governments would, on the most flimsy grounds, lay claim to the treasure."
    ---Judge William O.Mehrtens
    1978 Ruling Against the State of Florida

  9. #9
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    "Is that a Geiger Counter?"

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    They were in Africa on pretty sparse soil. It probably would not work on any region that had moist soil and cover vegetation. And it won't know a rock from metal - just that the area stays warm longer that the surrounding soil.

    What you need is a small thermal imaging Wi-Fi camera ($1,000?) and some way to track it real time, like a laptop. Without a GPS feed you'd have a hard time figuring what you had flown over as a target. Then the drone - like a DJI Mavic or Phantom Pro (I think the latter is what they were using) - $1,400.

    https://www.dronezon.com/learn-about...imaging-works/

    Here is the DJI Thermal Drone all as a $2,700 package (I have no idea if this vendor is reputable - but it gives you the idea and info).

    https://www.adorama.com/djim2entdual...iABEgLYt_D_BwE
    America was founded by tough hell-raisers. Rugged citizens who evaded taxes, spoke strongly against tyranny, grew tobacco, brewed beer, distilled spirits, and smuggled weapons. And it will be saved by those same types of citizens.

  10. #10
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    ARRG

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    I used to work for the local fire department, we used thermal imaging cameras. They do not go past glass or into water. They are super sensitive. They can show foot prints when someone walks on concrete with shoes on. If you just touch a wall for a quick touch. It shows. If a woman has breast implants it shows. They are pretty neat things. We used them to find fire in walls, bad fluorescent ballasts, hot spots in wiring etc.
    PetesPockets55 likes this.

  11. #11
    us
    Feb 2004
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    Plastic mine detectors work similar to thermal cameras.Theres a company that makes them in orlando and i talked to the owner one day about how they work.The cameras can see down into the ground to about 5 feet and its a hot and cold thing.They use them when the sun goes down.They are not thermal cameras.The cameras have a special filter on them that has titanium dust imbedded in the glass.A friend got 2 of these detectors by accident at a military surplus auction and had to destroy both of them being they were classified items.He still has the lenses so i may try and get them from him to play around with on one of my special CCD cams.I kept trying to get him to take one to the beach to find some treasure but the feds were keeping tabs on him and wanted them both destroyed as soon as possible with proof of destruction.
    Millions of dollars of Spanish treasure await those who would dare brave the eye of the hurricane.

  12. #12
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    The continuing adventures of Ropesfish -

    Jun 2007
    Sebastian, Florida
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    Disclaimer - I was lucky enough to go back to engineering school after I became interested in treasure salvage and therefore could kind of pick out the parts that might most affect my chosen avocation, so I am just sharing my understanding of stuff, not trying to be a lecturer. With that said:
    There is a thing called thermal inertia...
    From Wikipedia:
    Definition of thermal inertia. : the degree of slowness with which the temperature of a body approaches that of its surroundings and which is dependent upon its absorptivity, its specific heat, its thermal conductivity, its dimensions, and other factors.
    Why is it important to us? Thermal Inertia is the tendency to resist temperature changes. Because of its heat capacity, seawater temperature doesn't rise or fall much. (Nor does fresh water, very humid air or damp/wet sand or dirt.
    so in an arid environment the air cools quickly and the sand/dirt does too. All the heavy materials, rocks and metals for instance cool at a slower rate and will show a thermal image from the surface...I would guess that the availability of aerial helicopter or hexacopter drones has really kick-started this...
    Anyway...Water is very dense, very thermally conductive and very mobile so unless the water is very very clear, very very shallow and very very still, there would not be much chance of the heat of (for instance) a ballast pile absorbing much more solar energy during the day than the surrounding sand, coral or rock bottom and then being detectable through the water. It can pick out a drug running submarine on the surface though!
    At least that's the way I see it.
    PetesPockets55 likes this.
    Bill Black
    Search and Salvage/Caribbean Treasure Salvors
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    ropesfish@gmail.com

    Subcontractor on the 1715 Plate Fleet "C-31"
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  13. #13
    br
    Jul 2018
    486
    597 times
    All Types Of Treasure Hunting
    Ropefish,

    Concur. Only chance would be near shore when tide is out. That being said, there is a lot of stuff that has been carried inland and buried. Given that the camera was picking up small items such as horseshoes, a buckle and a pistol...is is certainly something to consider.
    ropesfish and PetesPockets55 like this.
    I love the taste of water, frozen into squares, and surrounded by rum

 

 

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