-Caveat Lector-
-Original Message-
From: Charlie Plyler [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, February 27, 2001 4:44 PM
To: [EMAIL PROTECTED]
Subject: [Elfrad-Group] Openletter
Please forward this letter to others if you wish.
ELFRAD
114 Artist Ln
Statesville, NC 28677
To whom this may concern:
This is an open letter to all that are interested in the research
of extremely low frequency signals, which propagate through the
earth and the study, by ELFRAD concerning earthquake precursor
activity.
I founded ELFRAD in the year of 1984 for the purpose of
conducting a study to determine the feasibility of predicting
earthquakes with an unconventional method of detecting extremely
low frequency signals, which are related to seismic activity.
Using a direct electrical connection to the earth, rather than an
antenna designed to receive electromagnetic signals, we have
accomplished this goal.
This will come as a surprise to most of you, who are familiar
with seismic detection techniques, because earthquake forecasting
is the Holy Grail of the seismic world. Independent researchers
have discovered that sometimes, ULF signals in the range of .01
to .04 hertz can be detected in close proximity to a seismic
fault line, hours or days before the actual event. This is
accomplished using various types of antennae designed to capture
this signal radiating through the atmosphere. This type of system
has its limits however, because electromagnetic signals decrease
logarithmically with distance. For instance, if a detection
device receives 10 millivolts of signal located from a source 10
feet distant, you would receive 2.5 millivolts at 20 feet. 1.25
millivolts at 40 feet and so forth. This rule is called the
Inverse Square Law. All radiated electromagnetic energy through
free space must conform to this law.
The propagation of seismic electrical signals through the earth
however does not conform to this rule, and the losses are more
linear. I have found that by using current detection between two
ground points connected directly to earth, the reception of these
ULF currents and voltages may be detected hundreds of miles from
the source. Due to the long periods of time for completion of
one cycle and the length of the waveform, I have found it
impossible to construct an antenna array of the dimensions
needed, to perform directional calculations, to determine the
source of the signal.
The ELFRAD detection system uses a different method to locate the
source of seismic ULF transmissions. Due to the ability of being
able to detect ULF signals from longer distances, we have
discovered the amplitude of the detected frequency is variable
relating to the nearness of the source. We have also found there
are other signals with the same frequency which are generated by
celestial objects such as the Sun during solar flares, and CMEs
which cause magnetic fluctuations which appear to be from
electrical seismic sources. Some of our receive sites are
located on or near areas of high seismic activity while others
are in quiet areas in remote locations. When an unusual signal
indicating activity in the frequencies of interest, by obtaining
data continuously from many receive sites, we are able to
determine the geographical location with the highest amplitude.
This data is received at a central location and analyzed.
We are in the process of constructing ELFRAD standardized,
monitoring sites in as many areas as possible, on a global basis.
By standardized, I mean that all equipment, and software, which
is used at all of the sites, is to be identical. This is a must
in order to analyze and make use of the data.
A typical ELFRAD monitor site contains the following:
1. An antenna array, which consists of two underground points
which, are used as the input for the receiver. Each array is
spaced at least 100 meters from the other in a North-South
orientation. 2. A ULF receiver designed by ELFRAD, which has a
band pass from 0 to 25 hertz. This receiver is totally
electrically isolated from the other equipment. 3. A 16-bit
analog to digital interface card to be used by Data computer. 4.
Data computer which is dedicated to collecting and storing data
from the receiver. Also functions as network interface to main
computer. 5. Main computer which is used as network interface to
data computer. This unit also performs initial analysis of
received data. Connects to Central ELFRAD computer via dial up
phone line. Also equipped for polling data requests. 6. Dial up
phone line to be used to transmit data to Central Office. Also
used for incoming data requests.
At this point in time, all of the equipment has been designed,
tested, and has been operational in ELFRAD monitoring locations
for three years. I needed to be sure this concept was sound, and
would perform as expected. I am now satisfied with the results
and am ready to take the next step.
I have funded this entire project and all expenses concerning the
research,
