To kiwi, and to the other Kiwis (New Zealanders) on this forum, I offer my sincere condolences for what has occurred in Christchurch (and Lyttleton, and surrounds). I hope your (collective) families escaped the tragedy.
Having received the USGS notification of the quake I turned to the TV where we had live feeds from the streets of Christchurch without editing, it was truly challenging and heart-wrenching to watch. All Kiwis know we Aussies and they have a close "family like" relationship (probably born of the original Anzacs) and it's always saddening to see such a disaster unfold, let alone just across the Tasman. Speaking for all Aussies, we're thinking of you.
Regards, Dave.
chaye_d
Re: Electric Earthquakes
davesmith_au wrote: To kiwi, and to the other Kiwis (New Zealanders) on this forum, I offer my sincere condolences for what has occurred in Christchurch (and Lyttleton, and surrounds). I hope your (collective) families escaped the tragedy.
Having received the USGS notification of the quake I turned to the TV where we had live feeds from the streets of Christchurch without editing, it was truly challenging and heart-wrenching to watch. All Kiwis know we Aussies and they have a close "family like" relationship (probably born of the original Anzacs) and it's always saddening to see such a disaster unfold, let alone just across the Tasman. Speaking for all Aussies, we're thinking of you.
Regards, Dave.
Thanks Dave. Im up in Auckland watching it all live too and just feeling helpless. Looks like it will be our worst natural disaster. I went and donated blood today which is all can really do beside giving money. The Auusie search teams are already on the ground working which is fantastic, but there is some pretty grim news coming out now. We are a small country with 1/2 a degree of seperation and this affects us all in some way.
Thanks for your thoughts.
kiwi
Re: Electric Earthquakes
davesmith_au wrote: To kiwi, and to the other Kiwis (New Zealanders) on this forum, I offer my sincere condolences for what has occurred in Christchurch (and Lyttleton, and surrounds). I hope your (collective) families escaped the tragedy.
Having received the USGS notification of the quake I turned to the TV where we had live feeds from the streets of Christchurch without editing, it was truly challenging and heart-wrenching to watch. All Kiwis know we Aussies and they have a close "family like" relationship (probably born of the original Anzacs) and it's always saddening to see such a disaster unfold, let alone just across the Tasman. Speaking for all Aussies, we're thinking of you.
Regards, Dave.
Very decent of you Dave .... thanks on behalf of us all, hard to get the head around really, not use to seeing a modern society get a hammering like this.....
cheers fellow Digger
kiwi
Re: Electric Earthquakes
Phorce wrote: I hope the New Zealand people get all the help they can. Of course this is an example of why the Scientists that are linking earthquake prediction to electrical activity are doing such good work.
Thanks Phorce ... GNS mentioning gravity on their report?,... didnt catch it properly
kiwi
Re: Electric Earthquakes
Monday, February 28, 2011 at 01:29:25 UTC Sunday, February 27, 2011 at 10:29:25 PM at epicenter Time of Earthquake in other Time Zones
Location 37.268°S, 73.296°W Depth 20 km (12.4 miles) Region BIO-BIO, CHILE Distances 37 km (23 miles) S of Concepcion, Bio-Bio, Chile 69 km (43 miles) NE of Lebu, Bio-Bio, Chile 76 km (47 miles) WNW of Los Angeles, Bio-Bio, Chile 469 km (291 miles) SSW of SANTIAGO, Region Metropolitana, Chile
Location Uncertainty horizontal +/- 22.9 km (14.2 miles); depth +/- 1.2 km (0.7 miles) Parameters NST=220, Nph=221, Dmin=455.3 km, Rmss=0.72 sec, Gp=101°, M-type=teleseismic moment magnitude (Mw), Version=C Source USGS NEIC (WDCS-D)
Developers went ahead and built on areas of land that could turn into murky soup after an earthquake, despite legal opposition from the local council, the mayor of Christchurch says.
Christchurch City Council mayor Bob Parker said for the past 30 years his council has insisted Land Information reports record if homes are built on sandy soil deposits and subject to liquefaction. ......... "With the benefit of hindsight, you would probably have to say that the nature of the foundations were not designed to cope in the end with the type of earthquake that we had," said Mr Parker.
"In a number of cases, there are areas where council has indicated that it did not want residential development to go ahead. In a number of cases this has resulted in court cases and on some occasions the council has lost those court cases," Mr Parker said. ....... Mr Parker said a lot will be learned about liquefaction from the earthquake in Christchurch.
So this guy who does Earthquake Watch is suggesting that areas showing coronal holes or ejections correspond spherically to where we'll see seismic activity on the Earth?? Like a mirror image kind of thing? And he is successfully predicting seismic events from this??
That would be stupendously amazing if this were true! Anyone familiar with this?
Aardwolf
Re: Electric Earthquakes
Well there are several million earthquakes on Earth every year, and on average one every 3 days of the magnitude that hit Christchurch, so finding a correlation to other phenomena is relatively simple.
StefanR
Re: Electric Earthquakes
Aardwolf wrote: Well there are several million earthquakes on Earth every year, and on average one every 3 days of the magnitude that hit Christchurch, so finding a correlation to other phenomena is relatively simple.
Quite so, Aardwolf. Sometimes one has to do some digging around to find interesting things. Something like...:
GREENBRIER, Ark. – The central Arkansas town of Greenbrier has been plagued for months by hundreds of small earthquakes, and after being woken up by the largest quake to hit the state in 35 years, residents said Monday they're unsettled by the increasing severity and lack of warning.
The U.S. Geological Survey recorded the quake at 11 p.m. Sunday, centered just northeast of Greenbrier, about 40 miles north of Little Rock. It was the largest of more than 800 quakes to strike the area since September in what is now being called the Guy-Greenbrier earthquake swarm.
The activity has garnered national attention and researchers are studying whether there's a possible connection to the region's natural gas drilling industry. The earthquake activity varies each week, though as many as nearly two dozen small quakes have occurred in a day.
mharratsc wrote: So this guy who does Earthquake Watch is suggesting that areas showing coronal holes or ejections correspond spherically to where we'll see seismic activity on the Earth?? Like a mirror image kind of thing? And he is successfully predicting seismic events from this??
That would be stupendously amazing if this were true! Anyone familiar with this?
Hi Mike,... I spent quite a few years at sea, Ken Ring is pretty damn good at what he does, here is some info
As tags on household appliances warn, water conducts electricity extremely well. Now, scientists have found that enhanced electrical conductivity in parts of Earth's mantle may signal the presence of water far below our planet's surface.
The researchers created the first global three-dimensional map of electrical conductivity in the mantle. Results of their study are published this week in the journal Nature.
The areas of high conductivity coincide with subduction zones--places where tectonic plates are being subducted beneath the Earth's crust, say the Oregon State University (OSU) scientists who performed the research. They used electromagnetic induction sounding of the Earth's mantle in the study. The method is very sensitive to interconnecting pockets of fluid in rocks and minerals.Subducting plates are comparatively colder than surrounding mantle materials and should be less conductive, geologists have believed. However, the OSU scientists suggest, conductivity in these areas may be enhanced by water drawn downward during the subduction process.
"Many earth scientists thought that tectonic plates are not likely to carry much, if any, water deep into the Earth's mantle," said Adam Schultz, a geologist at OSU and a co-author of the Nature paper. "Our model, however, clearly shows a close association between subduction zones and high conductivity.The simplest explanation is water."
The study provides new insights into the fundamental ways in which our planet works, Schultz says. Despite advances in technology, scientists are still unsure how much water lies beneath the ocean floor--and how much of it makes its way into the mantle.
The implications are myriad. Water interacts with minerals differently at different depths, and small amounts of water may change the physical properties of rocks, alter the viscosity of materials in the mantle, assist in the formation of rising plumes of melted rock, and ultimately affect what flows out on the surface.
"In fact, we don't really know how much water there is on Earth," said Gary Egbert, an oceanographer at OSU and co-author of the paper. "There is some evidence that there is many times more water below the ocean floor than there is in all the oceans of the world combined. Our results may shed some light on this question."
There may be different explanations for how the water--if indeed the conductivity is reflecting water--got there.
"If it isn't being subducted down with the plates," Schultz said, "is it primordial, down there for four billion years? Or did it come down as the plates slowly subduct, suggesting that the planet may have been much wetter a long time ago? These are fascinating questions for which we don't yet have answers."
Anna Kelbert, a post-doctoral researcher at OSU and lead author of the paper, says that the next step is to replicate the experiment with newly available data from both ground observatories and satellites, then conduct further research to better understand the water cycle and how its interaction with deep-Earth minerals works.
Ultimately, the scientists hope to produce a model quantifying how much water may be in the mantle, locked up in its rocks.
Subducting plates are comparatively colder than surrounding mantle materials and should be less conductive, geologists have believed. However, the OSU scientists suggest, conductivity in these areas may be enhanced by water drawn downward during the subduction process.
