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This is Volume 2 of the Ministry of Defence report 'Unidentified Aerial Phenomena in the UK Air Defence Region', Defence Intelligence Staff Scientific and Technical Memorandum 55/2/00, dated February 2000 and received 7 December 2000. It gathers 25 working papers on natural and man-made phenomena, meant as a reference for analysing UAP reports. The papers cover ball lightning, radar detection, balloons, satellites, mirages, plasma and similar subjects. One paper compares magnetic field experiments on human volunteers with close encounter reports. It concludes that effects from such fields are 'uncannily similar' to what witnesses describe.
“Sea”13 pages
# UNCLASSIFIED SECRET UK RESTRICTED ## EFFECTS ON EQUIPMENT AND OBJECTS 1. The reported effects, which seem to be due to electrical charges, magnetic and microwave energy are known to have caused: - Overheating of car batteries. - Metallic objects rising in temperature. - Magnetisation, which is sometimes retained. ## MAGNETIC EFFECTS 2. Objects close to reported UAP sightings have been subject to: - Permanent magnetism (fences, flag poles). This seems to imply DC or very slowly varying magnetic fields. - Radio interference. Radios can appear to off-tune (or go off their stations, since presumably, they move to a non-receiving wavelength). This is possibly due to the magnetisation of the ferrites used as the antenna cores (i.e. part of the tuning loop) in modern communications/radio receivers. - Interference with magnetic compasses. 3. In the latter case compass rotation rates have been noted. The effect (and speed) can be replicated by exposing the compass to an appropriate pulsed or varying magnetic field. 4. France is known to have measured magnetic field strengths in the vicinity of sightings as early as the 1950s when an extensive field measurement system (network of sensors) was set up for nuclear effects and the earth's geomagnetic field. Measurements to 1 part in 1000 established the change in field (in the presence of a UAP) and extraordinarily high magnetic fields were sensed. When this level was translated (i.e. scaled) to a reported distance of a few hundred metres between UAPs and radio receivers, from other reports elsewhere, the magnetic flux was consistent with the levels needed to cause the radio receiver effects reported. 5. High frequency magnetic fields presumably from nearby UAPs, are reported as causing battery acid heating (conducting medium), and other conductors to warm-up, while non-conductors, e.g. rubbers, plastics have reportedly remained cold to the touch. 6. French reports suggest that the slowly varying magnetic fields suspected do not appear to noticeably cause any body-currents in humans. The effects of EM fields on humans is covered at Annex F. 7. A report from Finland in 1977, which involved 170 troops on the Finnish border reported RF equipment 'jammed' and no telephones.
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