Written by the TreasureGuide for the exclusive use of treasurebeachesreport.blogspot.com.
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| Source: nhc.noaa.gov |
The one behind Harvey (red) is the one that looks to be headed towards Florida. At this point it has a 70% chance of developing into a cyclone in the next 48 hours.
As you can see, the third will probably head north and out into the North Atlantic.
There is a good chance that the one behind Harvey will affect out beaches. We haven't had much of anything to stir up the beaches all year.
MagicSeaWeed predicts an increase in the surf up to three or four feet by Tuesday. We'll see.
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If you've done much detecting around the Treasure Coast, you might have noticed that there are some places where your detector becomes very erratic or noisy. There is a place like that south of Turtle Trail. There is another south of the Rio Mar beach access. There is another north of Amber Sands beach access. And there are times when Pepper Park can produce some electrical interference, but not as consistently or as much as the other sites that I mentioned.
Wikipedia says, Electromagnetic interference (EMI), also called radio-frequency interference (RFI) when in the radio frequency spectrum, is a disturbance generated by an external source that affects an electrical circuit by electromagnetic induction, electrostatic coupling, or conduction. The disturbance may degrade the performance of the circuit or even stop it from functioning. In the case of a data path, these effects can range from an increase in error rate to a total loss of the data. Both man-made and natural sources generate changing electrical currents and voltages that can cause EMI: automobile ignition systems, mobile phones, thunderstorms, the sun and the Northern Lights. EMI frequently affects AM radios. It can also affect mobile phones, FM radios and televisions, as well as observations for radio astronomy.
You can also get electrical interference from electrical lines, underground utility cables and train engines. The interference can be significant enough that you won't be able to detect some locations. Some metal detectors will be more sensitive to a specific source of interference than other detectors. Some detectors will allow you to detect much closer to overhead electrical lines or other sources of electrical interference than others. That can be an advantage.
Some detectors have adjustments you can make that will allow you to work around various sources of interference. Just the other day I took my Ace 250 and ATX to a yard that had overhead electrical lines as well as underground cables that caused interference. Without making adjustments, the Ace could work much closer to the cables than the ATX, however the ATX has a Frequency Scan function that helped with that situation.
When working in the middle of the yard, the ATX was very noisy and sensitivity was severely reduced, but he ATX Frequency Scan function was able to find a frequency that eliminated much of the noise. It then worked very well where there was previously way too much interference.
On the ATX you hold the searchcoil steady and away from any metal, and push the button to activate the Frequency Scan function. It takes 35 seconds for the ATX to complete the scan and select a quiet operating frequency. It worked well.
At the beach I've seldom used the Frequency Scan function, except a few times at some of the locations mentioned above. There aren't as many sources of interference at the beach, but you'll find a good number in urban areas or residential neighborhoods.
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Darrel S. said the weight found by Grant of the Capitana a few days ago, Matches the weight found on Green Cabin Wreck several years, ago. It had 6M on it, and this one 4M.
Thanks Darrel. I didn't remember that.
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I noticed that in my videos and previous posts I kept typing Ace 150 when it should have been Ace 250. I made those corrections.
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Here is a scientific article on cross-shore suspended sand and bed load transport on beaches. It is very technical and difficult to read.
Here is the link.
http://onlinelibrary.wiley.com/doi/10.1029/2007JC004203/full
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Keep watching for weather news and a possible change in beach detecting conditions.
Happy hunting,
TreasureGuide@comcast.net
