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OT-: Mystery Bulge in Oregon Still Growing
http://www.livescience.com/forcesofn...ers_bulge.html Mystery Bulge in Oregon Still Growing By The Associated Press posted: 06 September 2005 09:02 am ET BEND, Ore. (AP) -- A recent survey of a bulge that covers about 100 square miles near the South Sister indicates the area is still growing, suggesting it could be another volcano in the making or a major shift of molten rock under the center of the Cascade Range. Recent eruptions at nearby Mount St. Helens in Washington state have rekindled interest in the annual Sisters survey and its findings. Oregon has four of the 18 most active volcanoes in the nation -- Mount Hood, Crater Lake, Newberry and South Sister. A recent U.S. Geological Survey report said monitoring is inadequate at all of them, with only basic monitoring at about half of the active volcanoes. Unlike the volcanoes, the bulge gets an extensive annual survey to track its growth. Spread out across an area nearly as big as the city of Portland, It's centered about three miles southwest of the South Sister, about 25 miles from Bend. The results of the late August survey won't be ready for weeks, but scientists have reached some conclusions about the bulge from past monitoring. They say it probably began growing in 1997 and has been rising ever since at a rate of about 1.4 inches a year. It was first observed from space using a relatively new imaging technology known as radar interferometry that can measure changes in the Earth's surface. The likely cause of the bulge is a pool of magma that, according to Deschutes National Forest geologist Larry Chitwood, is equal in size to a lake 1 mile across and 65 feet deep. The magma lake is rising 10 feet each year, under tremendous pressure, and it deforms the Earth's surface as it expands, causing the bulge. Other causes could be anything from the birth of a new volcano -- a fourth Sister in the making -- to a routine and anticlimactic pooling of liquid rock, researchers say. "The honest and shortest answer is, we don't know,'' said Dan Dzurisin, a USGS geologist. Dzurisin recently led a three-person leveling crew on a slow walk across the top of the bulge. They were hoping to detect any change in its surface using survey equipment accurate to one-sixteenth of an inch for every mile measured. Dzurisin's survey data, in concert with space imaging and satellite positioning measurements from two dozen fixed points on the bulge, give scientists an idea of the bulge's depth and size. Additional information from seismographs and chemical monitoring of area springs reveal movement of the magma underground. A swarm of 350 small earthquakes in March 2004 indicated magma was on the move, but the bulge has been quiet ever since. Whether the magma will move again or ever reach the surface is a mystery. But if it did, geological history suggests it would result only in small cinder cones that spew ash and lava. The good news is that such an eruption likely would not seriously affect any population centers, Chitwood said. Such cones are the most common volcanic features on Earth, he added. Central Oregon has about 600. Basalt flows have occurred in the area of the bulge every 1,000 to 1,500 years for the past 4,000 years, he said. And the area is due for another. "The bulge is on time,'' Chitwood said. "The bus has arrived.'' end This makes sense. The ring of fire around the Pacific Ocean, has gaps, of activity, between Mt St. Helens, and Mexico City. I am expecting the Long Valley Caldera to become active, within a few million years, but also, the area of Mojave VAlley, CA, and the Colorado River area near Las Vegas, and also Pheonix,AZ. How do I get to this? If you locate the subduction zone along the Washington - Oregon coast line, then measure the distance to the volcanoes Mt. Baker, Mt. Rainer, M. St. Helens, etc. (See: http://vulcan.wr.usgs.gov/Volcanoes/...ade_range.html) Now find the San Andreas Fault in California, then measure the same distance, to the east and draw a line parallel to the SAF, and you get the general location of possible volcanic activity in the future. AS the Pacicfic tectonic plate subducts beneath the American plate, the material of the Pacific plate is forced down and into the molten magma inside the Earth. This material is lighter(lower specific gravity) than the magma, and it coagulates and floats upward. Eventually you have volcanic activity, at or near the surface. Got volcano insurance? Gunner "Pax Americana is a philosophy. Hardly an empire. Making sure other people play nice and dont kill each other (and us) off in job lots is hardly empire building, particularly when you give them self determination under "play nice" rules. Think of it as having your older brother knock the **** out of you for torturing the cat." Gunner |
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Gunner Asch wrote:
http://www.livescience.com/forcesofn...ers_bulge.html Mystery Bulge in Oregon Still Growing By The Associated Press posted: 06 September 2005 09:02 am ET BEND, Ore. (AP) -- A recent survey of a bulge that covers about 100 square miles near the South Sister indicates the area is still growing, suggesting it could be another volcano in the making or a major shift of molten rock under the center of the Cascade Range. Recent eruptions at nearby Mount St. Helens in Washington state have rekindled interest in the annual Sisters survey and its findings. Oregon has four of the 18 most active volcanoes in the nation -- Mount Hood, Crater Lake, Newberry and South Sister. A recent U.S. Geological Survey report said monitoring is inadequate at all of them, with only basic monitoring at about half of the active volcanoes. Unlike the volcanoes, the bulge gets an extensive annual survey to track its growth. Spread out across an area nearly as big as the city of Portland, It's centered about three miles southwest of the South Sister, about 25 miles from Bend. The results of the late August survey won't be ready for weeks, but scientists have reached some conclusions about the bulge from past monitoring. They say it probably began growing in 1997 and has been rising ever since at a rate of about 1.4 inches a year. It was first observed from space using a relatively new imaging technology known as radar interferometry that can measure changes in the Earth's surface. The likely cause of the bulge is a pool of magma that, according to Deschutes National Forest geologist Larry Chitwood, is equal in size to a lake 1 mile across and 65 feet deep. The magma lake is rising 10 feet each year, under tremendous pressure, and it deforms the Earth's surface as it expands, causing the bulge. Other causes could be anything from the birth of a new volcano -- a fourth Sister in the making -- to a routine and anticlimactic pooling of liquid rock, researchers say. "The honest and shortest answer is, we don't know,'' said Dan Dzurisin, a USGS geologist. Dzurisin recently led a three-person leveling crew on a slow walk across the top of the bulge. They were hoping to detect any change in its surface using survey equipment accurate to one-sixteenth of an inch for every mile measured. Dzurisin's survey data, in concert with space imaging and satellite positioning measurements from two dozen fixed points on the bulge, give scientists an idea of the bulge's depth and size. Additional information from seismographs and chemical monitoring of area springs reveal movement of the magma underground. A swarm of 350 small earthquakes in March 2004 indicated magma was on the move, but the bulge has been quiet ever since. Whether the magma will move again or ever reach the surface is a mystery. But if it did, geological history suggests it would result only in small cinder cones that spew ash and lava. The good news is that such an eruption likely would not seriously affect any population centers, Chitwood said. Such cones are the most common volcanic features on Earth, he added. Central Oregon has about 600. Basalt flows have occurred in the area of the bulge every 1,000 to 1,500 years for the past 4,000 years, he said. And the area is due for another. "The bulge is on time,'' Chitwood said. "The bus has arrived.'' end This makes sense. The ring of fire around the Pacific Ocean, has gaps, of activity, between Mt St. Helens, and Mexico City. I am expecting the Long Valley Caldera to become active, within a few million years, but also, the area of Mojave VAlley, CA, and the Colorado River area near Las Vegas, and also Pheonix,AZ. How do I get to this? If you locate the subduction zone along the Washington - Oregon coast line, then measure the distance to the volcanoes Mt. Baker, Mt. Rainer, M. St. Helens, etc. (See: http://vulcan.wr.usgs.gov/Volcanoes/...ade_range.html) Now find the San Andreas Fault in California, then measure the same distance, to the east and draw a line parallel to the SAF, and you get the general location of possible volcanic activity in the future. AS the Pacicfic tectonic plate subducts beneath the American plate, the material of the Pacific plate is forced down and into the molten magma inside the Earth. This material is lighter(lower specific gravity) than the magma, and it coagulates and floats upward. Eventually you have volcanic activity, at or near the surface. Got volcano insurance? Gunner This will be Bush's fault too. Welfare state participants covered in ash, asking where are the rescue people, why didn't I get a limo to save me? Got to be Bus's fault! Michael |
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When I am able to see the bulge, I will begin to worry. Actually,
prevailing winds will take any ash away to the SE. Lava flow would have a long time getting to either Bend or Redmond. I suppose the environmentalists will have a fit because it will destroy more spotted owl and bull trout habitat! Paul in Redmond, OR |
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"Dave Hinz" wrote in message ... On 14 Sep 2005 12:01:48 -0700, wrote: When I am able to see the bulge, I will begin to worry. Actually, prevailing winds will take any ash away to the SE. Lava flow would have a long time getting to either Bend or Redmond. I suppose the environmentalists will have a fit because it will destroy more spotted owl and bull trout habitat! But man, think of the advances in computing that would happen if lava _did_ take out Redmond. Redmond Oregon is far from Redmond Washington. |
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Scott wrote:
"Dave Hinz" wrote in message ... On 14 Sep 2005 12:01:48 -0700, wrote: When I am able to see the bulge, I will begin to worry. Actually, prevailing winds will take any ash away to the SE. Lava flow would have a long time getting to either Bend or Redmond. I suppose the environmentalists will have a fit because it will destroy more spotted owl and bull trout habitat! But man, think of the advances in computing that would happen if lava _did_ take out Redmond. Redmond Oregon is far from Redmond Washington. And a far nicer place to live. Especially if you like skiing and high desert. |
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On Wed, 14 Sep 2005 13:07:23 -0700, Scott wrote:
"Dave Hinz" wrote in message ... But man, think of the advances in computing that would happen if lava _did_ take out Redmond. Redmond Oregon is far from Redmond Washington. Sorry, my bad. I will modify my statement to specify the northern of the two. |
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In article .com,
wrote: When I am able to see the bulge, I will begin to worry. Actually, prevailing winds will take any ash away to the SE. Lava flow would have a long time getting to either Bend or Redmond. I suppose the environmentalists will have a fit because it will destroy more spotted owl and bull trout habitat! Due to the new environmental regulations concerning wood and paper products, former Charmin/Northern/etc. customers are advised to begin wiping their asses with spotted owls. -- Don Bruder - - New Email policy in effect as of Feb. 21, 2004. Short form: I'm trashing EVERY E-mail that doesn't contain a password in the subject unless it comes from a "whitelisted" (pre-approved by me) address. See http://www.sonic.net/~dakidd/main/contact.html for full details. |
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On Wed, 14 Sep 2005 15:39:01 GMT, Michael
wrote: This will be Bush's fault too. Found those "WMDs" yet? snicker -- Cliff |
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On Wed, 14 Sep 2005 16:07:47 -0400, Cliff wrote:
On Wed, 14 Sep 2005 15:39:01 GMT, Michael wrote: This will be Bush's fault too. Found those "WMDs" yet? They'll turn up, Cliff. |
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"Dave Hinz" wrote in message
... They'll turn up, Cliff. Please stop quoting his insanity. |
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On Wed, 14 Sep 2005 13:56:03 -0700, Scott wrote:
"Dave Hinz" wrote in message ... They'll turn up, Cliff. Please stop quoting his insanity. Ah, is that the same cliff people complain about, who usually massively crossposts? I only see very few posts, probably because he almost never doesn't crosspost. I can fix the filters if this is the same entity. Let me know. |
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On Wed, 14 Sep 2005 13:56:03 -0700, "Scott"
wrote: "Dave Hinz" wrote in message ... They'll turn up, Cliff. Where & when? Please stop quoting his insanity. Found those "WMDs"? -- Cliff |
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On Wed, 14 Sep 2005 15:39:01 GMT, Michael
wrote: This will be Bush's fault too. Crossposting troll. -- Cliff |
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On Wed, 14 Sep 2005 06:44:35 GMT, Gunner Asch
wrote: A recent U.S. Geological Survey report said monitoring is inadequate at all of them, with only basic monitoring at about half of the active volcanoes. Science is all faith-based now under the wingers, right? And what actual "libertarian" would pay for any of it anyway? -- Cliff |
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Must be some kind of sensor that can spot a 28 mm movement. Of course my wife can get a
headache before I can raise half that distance. ..... It said OT! Gunner Asch wrote: http://www.livescience.com/forcesofn...ers_bulge.html Mystery Bulge in Oregon Still Growing By The Associated Press posted: 06 September 2005 09:02 am ET BEND, Ore. (AP) -- A recent survey of a bulge that covers about 100 square miles near the South Sister indicates the area is still growing, suggesting it could be another volcano in the making or a major shift of molten rock under the center of the Cascade Range. Recent eruptions at nearby Mount St. Helens in Washington state have rekindled interest in the annual Sisters survey and its findings. Oregon has four of the 18 most active volcanoes in the nation -- Mount Hood, Crater Lake, Newberry and South Sister. A recent U.S. Geological Survey report said monitoring is inadequate at all of them, with only basic monitoring at about half of the active volcanoes. Unlike the volcanoes, the bulge gets an extensive annual survey to track its growth. Spread out across an area nearly as big as the city of Portland, It's centered about three miles southwest of the South Sister, about 25 miles from Bend. The results of the late August survey won't be ready for weeks, but scientists have reached some conclusions about the bulge from past monitoring. They say it probably began growing in 1997 and has been rising ever since at a rate of about 1.4 inches a year. It was first observed from space using a relatively new imaging technology known as radar interferometry that can measure changes in the Earth's surface. The likely cause of the bulge is a pool of magma that, according to Deschutes National Forest geologist Larry Chitwood, is equal in size to a lake 1 mile across and 65 feet deep. The magma lake is rising 10 feet each year, under tremendous pressure, and it deforms the Earth's surface as it expands, causing the bulge. Other causes could be anything from the birth of a new volcano -- a fourth Sister in the making -- to a routine and anticlimactic pooling of liquid rock, researchers say. "The honest and shortest answer is, we don't know,'' said Dan Dzurisin, a USGS geologist. Dzurisin recently led a three-person leveling crew on a slow walk across the top of the bulge. They were hoping to detect any change in its surface using survey equipment accurate to one-sixteenth of an inch for every mile measured. Dzurisin's survey data, in concert with space imaging and satellite positioning measurements from two dozen fixed points on the bulge, give scientists an idea of the bulge's depth and size. Additional information from seismographs and chemical monitoring of area springs reveal movement of the magma underground. A swarm of 350 small earthquakes in March 2004 indicated magma was on the move, but the bulge has been quiet ever since. Whether the magma will move again or ever reach the surface is a mystery. But if it did, geological history suggests it would result only in small cinder cones that spew ash and lava. The good news is that such an eruption likely would not seriously affect any population centers, Chitwood said. Such cones are the most common volcanic features on Earth, he added. Central Oregon has about 600. Basalt flows have occurred in the area of the bulge every 1,000 to 1,500 years for the past 4,000 years, he said. And the area is due for another. "The bulge is on time,'' Chitwood said. "The bus has arrived.'' end This makes sense. The ring of fire around the Pacific Ocean, has gaps, of activity, between Mt St. Helens, and Mexico City. I am expecting the Long Valley Caldera to become active, within a few million years, but also, the area of Mojave VAlley, CA, and the Colorado River area near Las Vegas, and also Pheonix,AZ. How do I get to this? If you locate the subduction zone along the Washington - Oregon coast line, then measure the distance to the volcanoes Mt. Baker, Mt. Rainer, M. St. Helens, etc. (See: http://vulcan.wr.usgs.gov/Volcanoes/...ade_range.html) Now find the San Andreas Fault in California, then measure the same distance, to the east and draw a line parallel to the SAF, and you get the general location of possible volcanic activity in the future. AS the Pacicfic tectonic plate subducts beneath the American plate, the material of the Pacific plate is forced down and into the molten magma inside the Earth. This material is lighter(lower specific gravity) than the magma, and it coagulates and floats upward. Eventually you have volcanic activity, at or near the surface. Got volcano insurance? Gunner "Pax Americana is a philosophy. Hardly an empire. Making sure other people play nice and dont kill each other (and us) off in job lots is hardly empire building, particularly when you give them self determination under "play nice" rules. Think of it as having your older brother knock the **** out of you for torturing the cat." Gunner |
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On Wed, 14 Sep 2005 18:22:38 -0400, Bill Alliston
wrote: Must be some kind of sensor that can spot a 28 mm movement. Of course my wife can get a headache before I can raise half that distance. ..... It said OT! The state of the art today in such mesurements is around .5 mm over 20 miles. They use lasers among other things. Some fascinating stuff. I live within 5 miles of the San Andreas Fault, and about 40-60 miles as the crow flies from Parkfield, California, the most active place in the US. Ive taken the tours etc. Really interesting stuff. Gunner Gunner Asch wrote: http://www.livescience.com/forcesofn...ers_bulge.html Mystery Bulge in Oregon Still Growing By The Associated Press posted: 06 September 2005 09:02 am ET BEND, Ore. (AP) -- A recent survey of a bulge that covers about 100 square miles near the South Sister indicates the area is still growing, suggesting it could be another volcano in the making or a major shift of molten rock under the center of the Cascade Range. Recent eruptions at nearby Mount St. Helens in Washington state have rekindled interest in the annual Sisters survey and its findings. Oregon has four of the 18 most active volcanoes in the nation -- Mount Hood, Crater Lake, Newberry and South Sister. A recent U.S. Geological Survey report said monitoring is inadequate at all of them, with only basic monitoring at about half of the active volcanoes. Unlike the volcanoes, the bulge gets an extensive annual survey to track its growth. Spread out across an area nearly as big as the city of Portland, It's centered about three miles southwest of the South Sister, about 25 miles from Bend. The results of the late August survey won't be ready for weeks, but scientists have reached some conclusions about the bulge from past monitoring. They say it probably began growing in 1997 and has been rising ever since at a rate of about 1.4 inches a year. It was first observed from space using a relatively new imaging technology known as radar interferometry that can measure changes in the Earth's surface. The likely cause of the bulge is a pool of magma that, according to Deschutes National Forest geologist Larry Chitwood, is equal in size to a lake 1 mile across and 65 feet deep. The magma lake is rising 10 feet each year, under tremendous pressure, and it deforms the Earth's surface as it expands, causing the bulge. Other causes could be anything from the birth of a new volcano -- a fourth Sister in the making -- to a routine and anticlimactic pooling of liquid rock, researchers say. "The honest and shortest answer is, we don't know,'' said Dan Dzurisin, a USGS geologist. Dzurisin recently led a three-person leveling crew on a slow walk across the top of the bulge. They were hoping to detect any change in its surface using survey equipment accurate to one-sixteenth of an inch for every mile measured. Dzurisin's survey data, in concert with space imaging and satellite positioning measurements from two dozen fixed points on the bulge, give scientists an idea of the bulge's depth and size. Additional information from seismographs and chemical monitoring of area springs reveal movement of the magma underground. A swarm of 350 small earthquakes in March 2004 indicated magma was on the move, but the bulge has been quiet ever since. Whether the magma will move again or ever reach the surface is a mystery. But if it did, geological history suggests it would result only in small cinder cones that spew ash and lava. The good news is that such an eruption likely would not seriously affect any population centers, Chitwood said. Such cones are the most common volcanic features on Earth, he added. Central Oregon has about 600. Basalt flows have occurred in the area of the bulge every 1,000 to 1,500 years for the past 4,000 years, he said. And the area is due for another. "The bulge is on time,'' Chitwood said. "The bus has arrived.'' end This makes sense. The ring of fire around the Pacific Ocean, has gaps, of activity, between Mt St. Helens, and Mexico City. I am expecting the Long Valley Caldera to become active, within a few million years, but also, the area of Mojave VAlley, CA, and the Colorado River area near Las Vegas, and also Pheonix,AZ. How do I get to this? If you locate the subduction zone along the Washington - Oregon coast line, then measure the distance to the volcanoes Mt. Baker, Mt. Rainer, M. St. Helens, etc. (See: http://vulcan.wr.usgs.gov/Volcanoes/...ade_range.html) Now find the San Andreas Fault in California, then measure the same distance, to the east and draw a line parallel to the SAF, and you get the general location of possible volcanic activity in the future. AS the Pacicfic tectonic plate subducts beneath the American plate, the material of the Pacific plate is forced down and into the molten magma inside the Earth. This material is lighter(lower specific gravity) than the magma, and it coagulates and floats upward. Eventually you have volcanic activity, at or near the surface. Got volcano insurance? Gunner "Pax Americana is a philosophy. Hardly an empire. Making sure other people play nice and dont kill each other (and us) off in job lots is hardly empire building, particularly when you give them self determination under "play nice" rules. Think of it as having your older brother knock the **** out of you for torturing the cat." Gunner "Pax Americana is a philosophy. Hardly an empire. Making sure other people play nice and dont kill each other (and us) off in job lots is hardly empire building, particularly when you give them self determination under "play nice" rules. Think of it as having your older brother knock the **** out of you for torturing the cat." Gunner |
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"Bill Alliston" wrote in message ... Must be some kind of sensor that can spot a 28 mm movement. Of course my wife can get a headache before I can raise half that distance. ..... It said OT! This reminds me of the guy that comes home, carefully opens and closes the front door, removes his shoes, and heads to the bed room stopping off first in the bath room and gets a couple of aspirin. He then moves silently into his bedroom to find his sleeping wife. He then gently pushes her moth and pops the aspirin into her mouth. She wakes spitting and angrily asks what are you doing? He replied "Aspirin dear, for your headache" "But I don't have a headache." She said. Good!" He replied. -- __ Roger Shoaf Important factors in selecting a mate: 1] Depth of gene pool 2] Position on the food chain. |
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