Saturday, August 29, 2015

8/30/15 Report. Erika Gone. Supermoon Last Night. More on Trigger and Drop Points. Flying Aircraft Carrier Sunk.

Written by the TreasureGuide for the exclusive use of

Two Disturbances
Erika has disappeared.  However, the remnants are just off of Cuba formed from the remnants of Erika.  At the time of the 8 PM update, this disturbance only had a ten percent chance of becoming a cyclone in the next 48 hours.  We will get a lot of rain from it.

There is another disturbance coming off Africa.  It has already turned into a tropical depression.

Erika fizzled out like Danny did.  The surfing web site are predicting something like a three to four foot surf on the Treasure Coast tomorrow.  Then it is supposed to decrease again on Monday.


Last night was a supermoon, the first of three supermoons to occur this Fall
...In fact, the term ‘supermoon’ is not astronomical. Scientists call this event a ‘perigee moon’: it takes place when the full Moon reaches the closest point to Earth on its oval orbit. This point is called perigee and it is about 50,000 km closer to our planet than the opposite side of the Moon’s elliptical path – apogee...

Here is a link for more about that.
You might recall that it was worried that Erika would arrive during a supermoon.


I received the following email from Brian H.

I have been reading your blog and thought what if we had T-Shirts with Environmental Clean up Crew printed on them. Would make a great conversation point.

I have been studying your blog mainly on how objects move in the sand, fresh water lakes act different than the ocean but the fluid dynamics are the same. I do have the Great Lake Michigan in my back yard and it acts like an ocean.

I will hit a hot spot of 60's era flip tops and think no one has been here before? Then I will get into bottle cap heaven and dig like a hundred of them. One day I saw one in the water scooting across the surface of the sand and I started thinking differently.

It is when I get into the coins and nickels that I normally find the gold rings. Birds of a feather?

The weather on the lake for tomorrow will change to a Northeast and a Super Moon.

I will take a couple of machines and watch the sand movement.

Brian is right.  The water dynamics are the same.  Anywhere there is running water, even rain runoff, watch for the same basic principles at work.  Thanks Brian.  

Watching junk can tell you a lot.  Junk can help tell you how things are being distributed and therefor also where the good and bad areas are.


I really learned a lot about escudos lately.  It happened primarily as a result of looking at the recent Treasure Coast finds.

In the past couple of years I have also learned a lot more about how sand and objects move on beaches.  That is something I've studied for a long time, but I just made some new breakthroughs that help explain a lot. The more you learn, the more knowledge you have to build on, and that leads to learning new things.

A diver told me he was pretty sure that at least some of the escudos that were found this year down in the pot holes and cracks were up on the slabs before the blowers removed the sand.  A lot of the escudos were found on top of the slabs even after the blowers removed the sand.  That information was important to me for several reasons.  Basically it confirmed some things I suspected but was not absolutely sure about.

One of the books I mentioned the other day said that Frogfoot Weller wanted his blowers to run no faster than 600 rpm.  That was so the coins would settle down in the hole instead of being blowing around.

That provides an excellent example of how what I have named "trigger points" are important.  In case you haven't read what I've said about trigger points, a trigger point is the amount of water movement or force needed to get different objects to start moving.

Little force is needed to move silt or fine sand and more force is needed to move small pebbles and even more force is needed to move things like gold coins.  Every object has its trigger point.  If you know where each object lies on the scale, you know in what order things will be moved as the amount of force increases.  If you think about that continuum and how the various trigger points are  met as the amount of force increases, you'll understand how some objects are moved and others left behind as different amounts of force are produced.

The other important thing is the "drop point," which refers to the point at which different items drop out of moving water and settle.  As water movement decreases, different objects settle out at different times.

An important thing to watch is when and where the amount of force changes.  For example, there will be a lot of force directly in front of a breaking wave and less as the water goes up the slope on the front of the beach.  If the trigger point for an object, such as a coin was exceeded at the base of the slope, the "drop point" might be reached at some point as the water slows as it goes up the slope. Objects that are less easily moved will generally settle out first, but it is not a straight line function.

It gets more complicated since you also have to take into account such as back flow, which may have enough force to move sand or other objects back down the slope again.

Up to 600 rpm the force produced by Frogfoot's blowers moved the sand, but above 600 rpm the coins were also being blown around.  What they wanted was to blow the sand but not the coins, which would then tend to settle down into the hole.


Flying Aircraft Carrier
Source: see link below.
As early as 1916 the Navy had begun designing lighter-than-air (LTA) rigid airships, and by 1926 the focus had shifted to airships that could support aerial scouting missions. The first flying aircraft carrier, USS Akron (ZRS-4), was commissioned in 1931 – and after several incidents in two years, the airship crashed and sank off the coast of New Jersey in 1933...

I thought that was pretty interesting -  a flying aircraft carrier.  Note the size of the planes below the airship.  In the article there was is a picture of how the old planes were attached.  Really interesting idea that evidently didn't work out.

Here is the link.


Happy hunting,