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Saturday, October 8, 2022

10/8/22 Report - Multibeam Sonar Project Locates Hundreds of Shipwrecks. Ancient Stone Spheres Found. More On Predicting Erosion.

 

Written by the TreasureGuide for the exclusive use of the Treasure Beaches Report.

Predicted Path for Julia.
Source: nhc.noaa.gov.

There is a storm out there that is supposed to become a hurricane, but as you can see above, it is snot coming our way.

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Using state-of-the art multibeam sonar, researchers at Bangor University have finally been able to positively identify the wreck and have revealed her position for the first time. 

For the marine archaeologist, multibeam sonar has the potential to be as impactful as the use of aerial photography was for landscape archaeology. Multibeam sonar enables seabed mapping of such detail that superstructure details can be revealed on the sonar images.

The SS Mesaba was one among 273 shipwrecks lying in 7500 square miles of Irish Sea, which were scanned and cross-referenced against the UK Hydrographic Office’s database of wrecks and other sources. 

It was thought that 101 wrecks were unidentified, but the number of newly identified wrecks was far higher, as many, the SS Mesaba included, had been wrongly identified in the past...

Here is the link for the rest of that article.

Finding the ship that sent out a warning to The Titanic | Bangor University

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Archaeologists from the University of Bristol have suggested that mysterious stone spheres found at various ancient settlements across the Aegean and Mediterranean could be playing pieces from one of the earliest ever board games.

There has been quite a lot of speculation around these spheres found at sites on Santorini, Crete, Cyprus, and other Greek Islands with theories around their use including being for some sort of sling stones, tossing balls, counting/record-keeping system or as counters/pawns.

Previous research by the same team from the University of Bristol indicated that there was variability in sphere size within specific clusters and collections of spheres. Following on from this the team wanted to explore potential patterning within these sphere concentrations, to help give an insight into their potential use...

Here is the link for that article.


This article is about stone spheres, but it has much broader implications. It is about how people assess information and derive conclusions.  Spheres are very simple, and, therefore, common shapes.  One definition defines a sphere as a round solid figure, or its surface, with every point on its surface equidistant from its center.  If you stick to the definition and measure very precisely, you'll find fewer spheres. For example. is a golf ball a sphere. In general shape, maybe yes, but if you don't ignore the indentations, a golf ball is not a sphere. It depends to some extent about how precise you attempt to be.  Very often we ignore deviations, such as those on the golf ball, and consider it to be spherical or round.  Some people tend to be more exacting than others in the way they look at and think about the world.

The objects in this article are referred to as spheres, but they probably are spheres only in a general sense.  They could be used as weapons or projectiles, for hunting or keeping records, or other uses.  When an object does not have an obvious use, archaeologists often seem to use use the category of gaming pieces or religious objects.   I'm think those categories are used too often for unidentified objects.  It would seem to me there are many other possibilities.

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Not too long ago - it was just before the big south wind and recent beach erosion - I did a post on predicting beach erosion.  People always talk about the water and factors such as the size of the surf and the tides, but they often ignore the shape and characteristics of the beach.

Beaches aren't straight lines and they don't run exactly north to south.  They are curved and the general direction of most Treasure Coast beaches is a little northwest to southeast, and there are a lot of bends or curves.  That means that an east swell will not be hitting the beach at a 90 degree angle. A slight northeast swell will hit much of the Treasure Coast at a 90 degree angle, but the angle will vary with the curves of the shoreline.  Areas that face more north will tend to erode at different times than those areas where the shoreline faces more south.  

The recent south wind that caused erosion most everywhere along the Treasure Coast almost parallel to the beach and was at an oblique angle to most of the beaches and was not affected much by slight curves or deviations in the angle of the shoreline.

Another factor that is often overlooked, is the amount of sand in front of the beach and other submerged features such as reefs or rocks that will affect how the water force hits the beach.

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Source: MagicSeaWeed.com.

The tides are still high, but the surf is back to very small.

Good hunting,

TreasureGuide@comcast.net