Hearing some strange noises?
Useful hypothesis for the investigator/researcher of anomalous sounds to consider.
By: Robin Pyatt Bellamy
Consider the possibility that
it’s not only normal, but natural. Studies indicate that limestone plates (especially those, which are not deep in the earth,) have pouching effects when moist. This moisture can be as simple as a good rain, even if it has been
a couple of days previous. The top ground water seeps into crevices in the limestone, causing some small movement in the rock to accommodate the water.
As the plates of rock move against each other it can provide a variety of sounds, from high pitched squeal-like sounds to more of a low moan. As the water evaporates or leeches out to ground springs the noise stops. Noise activity happens during both the swelling/pouching phase and the evaporation/leeching phase, which may or may not be immediately concurrent.
This presents some interesting considerations for ghost researchers.
To accurately substantiate the difference between ghost activity and natural phenomenon many traditional devices are rendered useless. Sound recordings, while helpful for documenting the occurrence, do not prove anything other than the fact that something was heard and that it did not come from living human sources or from atmospheric sources as typically noted (traffic, wind in the trees, machinery)but does not rule out spatial echoes in the aquifer. Additionally, since limestone is active in electromagnetic field propagation, the standard or even advanced EMF detectors commonly used in the field must be discounted as well, as EMF would be considered a ‘normal’ reading on sites which are rich in limestone.
Before attempting to theorize on a site of this nature, it is advisable to check the geology of the area. An overall knowledge of what sediments are found locally is imperative, and if the area is found to be
relatively rich in limestone it would be prudent for the thorough researcher to acquire the specific geological data on the exact property in question, as well as any immediately nearby properties to assess if any changes in
the bedrock or near bedrock could have increased water absorbency or plate movement.
A thorough study of atmospheric condition (including relative humidity) for the dates and times of the sound reports should also be included in case notes.
Please note that the limestone plates need not be large.
Even some as small as a dinner plate, when moved with force against another of the same size, will give off a discernable sound. Sensitive ears may hear every movement. As an interesting aside, a similar occurrence happens in mass graves that are thousands of years oldthe bones degenerate into limestone deposits which could conceivably generate the same phenomenon with sound.
Further Reading And Study:
A quantitative appraisal of airborne and ground-based transient electromagnetic (TEM) measurements in Denmark
http://www.geo-online.org/manuscripts/christiansen01127.pdf
A large selection of links on geological, seismic and radial studies is available here:
http://www.eegs-es.org/e-06.htm
Geotechnics, ground water, and mining
http://www.eegs-es.org/torino.pdf
The hydrologic cycle
http://www.specialedprep.net/MSAT%20SCIENCE/Atmosphere.htm
Soil Electrical Conductivity Variability
http://www.bae.uky.edu/~precag/PrecisionAg/Reports/Soil_EC_Var/soil_electrical_conductivit
y_var.htm
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