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New Zealand’s geothermal systems Scientists divide New Zealand’s geothermal systems into three main groups: •Large, intense systems associated with young volcanoes •Cooler systems associated with older or extinct volcanoes •Isolated warm springs associated with faultlines. The Taupō volcanic zone The major geothermal fields in the Taupō region give rise to the spectacular geysers, boiling springs, mud pools and fumaroles (steam or gas vents) throughout the region. These features are closely associated with active volcanoes. In volcanic zones such as Taupō the ground is heated by magma (molten rock) close to the surface. Because of this intense heat source, water temperatures in the deeper parts of a geothermal system may be greater than 300ºC. The waters are under great pressure, so can become superheated well above their normal boiling temperature (100ºC at sea level). Outside the Taupō region, the only other high-temperature geothermal system is at Ngāwhā, in Northland, which has been volcanically active in the last few thousand years. Cooler systems in volcanic zones Numerous other hot springs are associated with remnants of volcanic activity, particularly in Northland, Coromandel, the Hauraki Plains and the Bay of Plenty. Heat sources for these fields are diffuse rather than intense, producing fluid temperatures of less than 100ºC. These smaller systems are confined to the North Island. Banks Peninsula and Otago Peninsula in the South Island are ancient volcanoes, but there is no longer any volcanic heat flow underneath them. Springs associated with faultlines Warm springs (less than 70ºC) are found in non-volcanic areas of New Zealand. Faults – deep fractures in the rock – provide channels for warm water to rise rapidly from depths where it has been heated. Striking examples are the hot springs aligned along the Hope Fault, in North Canterbury, and the Alpine Fault, in the Southern Alps. At Hanmer, on the Alpine Fault, a range of thermal pools attract thousands every year. the diffuse heat source explains why the hot springs around Auckland (Waiwera, Parakai and Miranda) are a long way from the volcanoes
Originally posted by PurpleDog UK
Here's a thread which was on ATS only a week or so ago....
www.abovetopsecret.com...
It talks about possible eruptions and other issue in that area...
Might be of interest...
Regards
PDUK
I would still not consider that another massive earthquake is certain, in fact I think it’s more likely not to be the case in Christchurch. I can only repeat that other well-known earthquakes in NZ’s history have not, as a rule revisited the same site. // For another disastrous event, Christchurch may or may not be in the firing line again; it could be Wellington or anywhere, and it may not even happen. // The numbers of shakes do seem to be getting less and the distances greater between clusters. People are at last adjusting. // ...my guess is that these aftershocks will end soon for Christchurch, probably around the end of November. // it is reasonable to relax and assume that another devastating shake is unlikely to repeat anytime soon, despite a seismology-department knee-jerk reaction that a 6+ mag. earthquake aftershock could be arriving in the district at any time. // Nothing is achieved by the so-called earthquake experts warning of ever-impending doom, which may be an ongoing exercise in damage control to cover-up performance embarrassment. To proclaim afterwards that more and bigger shakes were to come [is a] distraction... perhaps they should admit to that, rather than make more claims about future events to come // There is no reason to suppose any aftershocks of significance will occur... // My business is only a bunch of opinions as I have wearily repeated. There is no claim on accuracy, proof or anything other than that I have opinions. // It indicates the Christchurch shake is not part of some lasting new development, reaffirming that the activity of the past couple of days has probably been just remnants of general global disturbance due to the recent lunar eclipse..//. In a day or so things should be back to normal...// Dolphin's send sonar signals to the moon.