Nessie Sightings - Seiche Phenomenon
Subscribe to Naked Science - http://goo.gl/wpc2Q1 Every other Wednesday we present a new video, so join us to see the truth laid bare... Sceptics such as members of the Loch Ness Project believe that the unique topography of Loch Ness gives rise to some sightings. Loch Ness researcher Adrian Shine suggests there are two factors in creating illusions on the loch. First, the lock is like a wind tunnel, because it’s aligned with the prevailing southwest to northeast winds. Second, because of its great depth the loch water never gets too warm in summer, nor too cold in the winter, in fact the loch never freezes. In winter the relatively warm water meets colder air producing unexpected mirages on the surface, and the winds of late summer meeting the warmer less dense top layer of the water can induce an extraordinary process, called a seiche. A seiche is a large oscillation of a lake, caused by water reverting to its natural level after being blown to one end of the lake, resulting in a standing wave. The legend of the Loch Ness monster dates back 1500 years. Since then thousands of eye witnesses, countless photographs, sonar records and films have testified to the existence of a Loch Ness monster. A profile has gradually emerged of ‘Nessie’ having three humps, a long neck, rough-textured skin and being over 10 feet in length. Every year tourists from all over the world flock to see it. Yet despite decades of tireless exploration, observation and scientific analysis, still no real evidence has been discovered. Clip taken from the Naked Science documentary “Loch Ness”. Watch it here - Coming soon!