Geology and Archaeology:
NB Sonic phenomena in the Salisbury area are likely to have been generated by the movement of subterranean water and the sedimentation of sound within alluvial deposits:
The city of Salisbury is built on Alluvium overlying Valley Gravels at the confluence of the rivers Avon, Nadder, and Bourne. These were part of the Solent river system which was eroded down through the floodplains to create a series of river terraces in the Quaternary period some 2.6 million years ago.
In the more recent periods the city has extended up onto Upper Chalk and Plateau Gravels towards Old Sarum in the north and Harnham Hill in the south. The site of Medieval Salisbury is very low - lying within the valley, giving rise to floods in the city, for example in 1836, 1841 and 1883.
Two branches of the Hampshire Avon (East and West) both rise in the Vale of Pewsey, north of Salisbury, and the river flows southwards through Salisbury centre. Within and around Salisbury, there is the confluence of five main river systems: Avon, Nadder, Wylye, Bourne and Ebble.
The bedrock geology of the Salisbury area comprises mainly of Chalk, with a small area of Palaeogene deposits. The Wittering Formation is mainly brownish grey laminated clays; sands with clay bands; clayey sands; and beds of glauconitic sands. London Clay underlies the Wittering Formation and outcrops along the axis of the Alderbury – Mottisfont Syncline. It comprises of grey or brown (olive green when unweathered), commonly micaceous silty clay, known to become more sandy and pebbly towards its base. It outcrops on the gentle dip slope behind the minor Reading Formation escarpment.
Structurally, Salisbury sits within the Wessex Basin, which comprises a system of post-Variscan extensional sedimentary basins and ‘highs’ that covered much of southern England, south of the London Platform and Mendip Hills, during Permian to Mesozoic times
Possible contributing factors:
The cathedral has the tallest church spire in the United Kingdom (123m/404 ft) – could this be acting as some sort of giant focusing antenna that channels electromagnetic frequencies into the ground, releasing dormant resonances in the manner of a lightning conductor? Geometry within the construction of the cathedral itself may also be a factor here. Cooke and Kidson identify ratios of the square roots of 2, 3 and 5 in the generation of the plan of Salisbury from Old Sarum Cathedral, within a mystical numerical principle known in mediaeval Christendom as ad triangulem.
The Salisbury cathedral clock dating from about AD 1386 is supposedly the oldest working modern clock in the world. The clock has no face because all clocks of that date were sonic timepieces that rang out the hours on a bell.
Old Sarum started as a huge Iron Age hillfort and subsequently saw occupation by the Romans, Saxons and Normans. As well as its commanding position, some suggest that another reason for Old Sarum's occupation was due to the Earth Energies that run through the site. Dowsers have demonstrated that a strong, powerful leyline runs from Stonehenge, through Old Sarum, Salisbury Cathedral and on to Clearbury Ring. It is also said that new Sarum's street layout mirrors these lines of energy.
Sir Norman Lockyer (Astronomer-Royal), was the first 'respectable' person to recognize geometry in the ancient English landscape. He noticed the geometric alignment between Stonehenge, Grovely (Grove-ley) castle and Old Sarum (The site where the original Salisbury cathedral was built). The three form an equilateral triangle with sides 6 miles long, with the Stonehenge-Old Sarum line continuing another 6 miles to the site of the present Salisbury Cathedral, and beyond.
The ley passes marginally to the East of the outstanding 404 foot spire which marks an exceptionally powerful blind spring. On a number of occasions a fire alarm has resulted from the appearance of dense clouds of flying ants swarming around the spire, which were taken for smoke, attracted like certain other creatures to blind springs. The spire also seems to attract the mysterious White Birds of Salisbury Plain - large albatross-like birds, dazzlingly white, which are said to appear whenever a bishop of Salisbury is dying. They were certainly seen in 1911, accurately foretelling the death of the then bishop.
Crop Circles: Patterns suddenly appear in the corn fields of our countryside. Are they simply an elaborate hoax or are they caused by U.F.O s, earth energies or plasma vortexes?
Sonic phenomena are also associated with these features. Crop circles in Wiltshire often occur around the heart of the county in and around Stonehenge and Avebury, usually first appearing in April and continuing into the summer months - dozens of geometric symbols, mandalas and beautiful patterns appear in the farmers growing crop fields each and every year.
A key research question for our study is the degree to which these circles may be formed as a result of geological vibration from below ground.
Salisbury is on the edge of an area called the Warminster Triangle, an area associated with strange sounds, celestial lights, crop circles, electromagnetic effects, ghosts, black dogs, energy lines, ancient sites, UFO landings and geophysical strata. Some of these effects may be attributed to Aeolian Phenomena - the activation of sound through the action of the wind or other environmental forces - on natural materials.
Warminster's long and controversial UFO history began early on Christmas Day, 1964. Arthur Shuttlewood writes, in The Warminster Mystery: “The air was brazenly filled with a menacing sound. Sudden vibrations came overhead, chilling in intensity. They tore the quiet atmosphere to raucous rags and descended upon her savagely. Shockwaves pounded at her head, neck and shoulders." Other such "sonic attacks" which occurred at around the same time in different locations around the town were later reported.
Earth energy – Geomancy:
 IMPORTANT NOTE: A committee decision is proposed as to the degree to which NISG should associate itself with Geomantic colleagues, given as they are to non-scientific notions of ‘mystery’ ‘spirituality’ and the ‘arcane’.
Claims have been made that henge locations near to Salisbury, such as Stonehenge and Avebury were chosen by Neolithic peoples because of powerful energies that exist deep within the landscape. Generations ago, our ability to tune into our sixth sense was heightened - in the same way that today's Aboriginals can find water deep undergound in the Australian bush or navigate over long distances without map or compass. It has been argued that the Neolithic temples, henges, burial mounds and long barrows of Salisbury Plain are constructed at locations where these natural energies were more focused, and easily detected by our predecesors, perhaps through sonic vibration. Did those who built Stonehenge, for example, chose the area because they located a concentration of earth energy deep underground together with an alignment with the sun, moon and stars, something that would have been hugely significant to Neolithic man, in-tune, as he was, with the natural cycle of the world?

The Rifles Museum in Salisbury, also known as The Wardrobe, also has a long history of paranormal activity, with reports of books flying from shelves, heavy footsteps from empty rooms and the apparition of a Grey Lady. The house dates back to the 1540s. People have reported windows slamming shut of their own accord. There has been a building on this land since the 13th Century. Staff have seen the figure of a Cavalier within the building and there have been reports of bright light anomalies and significant temperature drops in sealed rooms, wailing noises and a strange humming sound that emanates from nowhere.