Some atmospheric and magnetospheric effects possibly related to the Vitim bolide impact
E.A. Kasatkina and O.I. Shumilov
Institute of North Industrial Ecology Problems, Kola Science Centre RAS, 184209 Apatity,
Russia
Sensors aboard US Department of Defence satellites detected the impact of a bolide
on 24 September 2002 at 16:49 UT. The bolide had disappeared at an altitude of
30 km above the Vitim river, Siberia (58.21N, 113.46E). The total radiated energy
was 8.6x10ˆ11 Joules. An unusual infrasonic event with a 30-minute duration has
been detected by the Apatity infrasonic array at Kola Peninsula (67.3N, 33.3E) on
September 24, 2002 at 22:20 UT. The infrasonic signal had been detected by three
spatially separated microbarographs operating in the passband from 0.0001 to 1 Hertz
at a distance of 4000 km from the source. Estimates of the local infrasound velocity
and the direction of the signal arrival seem to be in agreement with the acoustic travel
velocity and the source azimuth. We cannot exclude that the Vitim bolide (or minicomet)
effects were as well appeared at some other atmospheric and magnetospheric
phenomena, e.g. in magnetic disturbances at high latitude stations, cosmic radionoise
absorption, variations of air conductivity. These effects are compared with some other
similar effects related to different bolides like Tunguska and Brasilian ones. A possible
nature of the effects is discussed.
The work was partially supported by Russian Foundation for Basic Research (grant N
05-06-97528) and also by RAS program "Electric processes and radiophysical methods
of investigations". http://www.cosis.net/abstracts/EGU05/00257/EGU05-J-00257.pdf
Geophysical Research Abstracts, Vol. 7, 00257, 2005
SRef-ID: 1607-7962/gra/EGU05-A-00257
© European Geosciences Union 2005
29 June 2009
Russia Past Super Bolide News- Tunguska 101 29JUN09
Soviet Academy of Science 1927 expedition led by Leonid Kulik
Tunguska 101th anniversary 30JUN09
Tomorrow, Tuesday June 30, 2009 marks the one-hundred-first anniversary of the Tunguska impact event in Russia of June 30, 1908. Wikipedia has a very good report on Tunguska:
... At around 7:17 a.m. local time, Tungus natives and Russian settlers in the hills northwest of Lake Baikal observed a column of bluish light, nearly as bright as the Sun, moving across the sky. About 10 minutes later, there was a flash and a sound similar to artillery fire. Eyewitnesses closer to the explosion reported the sound source moving east to north. The sounds were accompanied by a shock wave that knocked people off their feet and broke windows hundreds of miles away. The majority of eyewitnesses reported only the sounds and the tremors, and not the sighting of the explosion. Eyewitness accounts differ as to the sequence of events and their overall duration. ... (more)
http://en.wikipedia.org/wiki/Tunguska_event
28 June 2009
Spanish Meteorite News- 28JUN09
Vida y fosilización en el desierto antártico
Revista Abril de 2005
Revista Abril de 2005
| |
Vida y fosilización en el desierto antártico.
Carmen Ascaso, Centro de Ciencias Medioambientales, CSIC, y Jacek Wierzchos, Universitat de Lleida. Artículo publicado en la revista El Ecologista nº 43, primavera 2005
Los estudios llevadas a cabo por los autores en la Antártida están sirviendo para sentar las bases sobre las técnicas que permitan detectar formas y restos de vida en Marte o en los meteoritos. ...(more)
Vietnamese Meteorite News- 29JUN09
Tìm hiểu nguồn gốc trái đất qua nghiên cứu thiên thạch
Một phần vật liệu cấu tạo nên trái đất là thiên thạch có nguồn gốc trong vũ trụ. Theo học giả Phipipp Heck đến từ Đại học Chicago và các đồng sự của mình, những thiên thạch đó trẻ hơn so với các dự đoán của các lý thuyết hiện hành. ...(more)
http://www.khoahoc.com.vn/khampha/kham-pha/24173_Tim_hieu_nguon_goc_trai_dat_qua_nghien_cuu_thien_thach.aspx
Cập nhật lúc 09h36' ngày 28/06/2009
Một phần vật liệu cấu tạo nên trái đất là thiên thạch có nguồn gốc trong vũ trụ. Theo học giả Phipipp Heck đến từ Đại học Chicago và các đồng sự của mình, những thiên thạch đó trẻ hơn so với các dự đoán của các lý thuyết hiện hành. ...(more)
http://www.khoahoc.com.vn/khampha/kham-pha/24173_Tim_hieu_nguon_goc_trai_dat_qua_nghien_cuu_thien_thach.aspx
27 June 2009
Meteorite News- Rocks From Space by Michael Johnson 28JUN09
SIKHOTE-ALIN
A shower of fireballs rained down on the forest of Sikhote-Alin Mountains on February 12, 1947 at around 10:30 am. Pieces were blasted in every direction. Some were even found embedded in trees. MORE: www.sikhote-alin.org WWW.SPACEROCKSINC.COM
Australia Meteorite News- Spider Impact Crater 27JUN09
Spider Crater, Western Australia
download large image (6 MB, JPEG)
Over the Kimberley Region of northern Western Australia, satellite sensors and airplane passengers alike can see a giant arachnid sprawling over the arid landscape. This spider’s not just big, it’s old. This prehistoric monster crawls out of the past as if to remind us of the destructive power of the cosmos.
The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA’s Terra satellite captured this image of Spider Crater and its surroundings on August 11, 2000. In this false-color image, the arid landscape appears in varying shades of crimson. Water appears blue-black, namely in the meandering river near the bottom edge of the image. Vegetation appears in shades of red. While vegetation looks sparse throughout the area, the intense red dots along the river indicate fairly lush—if intermittent—vegetation lining the riverbanks.
Near the center of the image is the Spider, sunlight giving an oddly ghostlike appearance to the steep ridges that form its legs. Geologists long puzzled over what this structure was, but found an important clue in the 1970s. They found shatter cones—cone-shaped, grooved rocks known only to appear in craters left by meteor or asteroid impacts. Other clues to the structure’s origin appeared in the form of strongly deformed layers of sedimentary rock that showed evidence of extraterrestrial trauma.
Spider Crater rests in a depression some 13 by 11 kilometers (8 by 7 miles) across. Meteorite craters often have central areas of uplift, and Spider Crater fits this pattern, with a central dome roughly 500 meters (1,640 feet) in diameter. Radiating from this central dome are features unusual in impact craters in general, but important in giving this crater its nickname. Overlapping beds of tough sandstone that have weathered the elements far better than the surrounding rocks form the spider’s “legs.” So while Spider Crater sits in a depression and has a central uplift area characteristic of impact craters, it shows extreme differences in erosion, giving it a unique appearance.
The age of Spider Crater is uncertain, but its formation has been estimated to fall between 900 and 600 million years ago. If this age estimate is correct, the crater formed from an impact that occurred during the Neoproterozoic, a period of geologic history when, some geologists hypothesize, Earth underwent a series of global ice ages nicknamed “Snowball Earth.”
- References
- McHone, J.F., Roddy, D.J., Shoemaker, C.S., Williams, K.K., Klemaszewski, J.E. (2002). Spider impact structure, Western Australia imaged with Space Shuttle radar. Thirty-third Lunar and Planetary Science Conference.
- Wikipedia. (2007, September 29). Spider Crater. Accessed March 27, 2008.
NASA image created by Jesse Allen, using data provided courtesy of NASA/GSFC/METI/ERSDAC/JAROS, and U.S./Japan ASTER Science Team. Caption by Michon Scott.
Source: http://earthobservatory.nasa.gov/IOTD/view.php?id=8607
Massachusetts Meteorite News- NASA Samples in West Bridgewater Library 27JUN09
Brockton area libraries expect surge of patrons this summer during bad economy
... West Bridgewater, Massachusetts: Display of lunar rock and meteorite samples from NASA beginning July 13 in Library ...
http://www.enterprisenews.com/news/x1836449549/Brockton-area-libraries-expect-surge-of-patrons-this-summer-during-bad-economy
Meteorite News- NASA to Open Moon Vault 27JUN09
NASA GIVES MEDIA, PUBLIC LOOK INSIDE APOLLO MOON ROCK VAULT
HOUSTON -- NASA will offer reporters an unprecedented chance to
conduct interviews with scientists inside the lab that stores moon
rocks Apollo astronauts collected during their six missions. The July
2 interview opportunities from the Apollo Lunar Sample Processing Lab
and Storage Vaults at NASA's Johnson Space Center in Houston will
take place nearly 40 years after humans first walked on the moon.
Using the NASA Television's Live Interview Media Outlet satellite
channel, news organizations will have a chance to talk with
scientists who study the lunar samples. The interviews will originate
from inside the lunar sample vault, amid the trays of moon rocks and
soil samples. Among the samples are those Apollo 11 astronauts Neil
Armstrong and Buzz Aldrin brought back to Earth in July 1969.
Live interview opportunities will be available from 6 a.m. to 8 a.m.
and 2 p.m. to 4 p.m. CDT with lunar sample scientists Gary Lofgren
and Andrea Mosie. Lofgren is the lunar curator at Johnson and has
been with the lab since the Apollo era. Mosie has been a scientist in
the current lab since it opened in 1979.
To participate in the interviews, journalists should contact Victor
Scott at 281-483-4942 or victor.j.scott@nasa.gov no later than noon,
July 1.
The public also will have an opportunity to take a virtual tour of the
lunar sample lab and ask the scientists questions via Ustream and
Twitter from 12 p.m. to 1 p.m. The public can submit questions to
Johnson's Twitter account, @NASA_Johnson, beginning today and via
Ustream live during the event. The tour and the question-and-answer
session also will be broadcast live on NASA TV.
To view the live broadcast on Ustream and submit questions, visit:
http://www.ustream.tv/channel/nasa-live
Between 1969 and 1972, six Apollo spaceflight missions brought back
842 pounds and 22,000 separate samples of lunar rocks, core samples,
pebbles, sand and dust from the lunar surface. The majority of the
samples are stored at the Apollo Lunar Sample Processing Lab and
Storage Vaults at Johnson, with a small subset held at the White
Sands Space Harbor in New Mexico. The samples continue to be studied
by scientists around the world. The work has provided invaluable
knowledge as NASA prepares to return to the moon.
The NASA Live Interview Media Outlet satellite channel will be used
for the event. The channel is a digital satellite C-band downlink by
uplink provider Americom. It is on satellite AMC 6, transponder 5C,
located at 72 degrees west, downlink frequency 3785.5 Mhz based on a
standard C-band 5150 Mhz L.O., vertical polarity, FEC is 3/4, data
rate is 6.00 Mhz, symbol rate is 4.3404 Mbaud, transmission DVB,
minimum Eb/N0 is 6.0 dB. For NASA TV streaming video, downlink and
schedule information, visit:
http://www.nasa.gov/ntv
For more information about the Apollo lunar samples and lab, visit:
http://curator.jsc.nasa.gov/lunar/index.cfm
NASA is planning a number of activities and events in 2009 as the 40th
anniversary of the first moon landing on July 20 approaches. The
events will celebrate the Apollo Program, its accomplishments, and
the benefits to our lives today. For more information, visit:
http://www.nasa.gov/apollo40th
HOUSTON -- NASA will offer reporters an unprecedented chance to
conduct interviews with scientists inside the lab that stores moon
rocks Apollo astronauts collected during their six missions. The July
2 interview opportunities from the Apollo Lunar Sample Processing Lab
and Storage Vaults at NASA's Johnson Space Center in Houston will
take place nearly 40 years after humans first walked on the moon.
Using the NASA Television's Live Interview Media Outlet satellite
channel, news organizations will have a chance to talk with
scientists who study the lunar samples. The interviews will originate
from inside the lunar sample vault, amid the trays of moon rocks and
soil samples. Among the samples are those Apollo 11 astronauts Neil
Armstrong and Buzz Aldrin brought back to Earth in July 1969.
Live interview opportunities will be available from 6 a.m. to 8 a.m.
and 2 p.m. to 4 p.m. CDT with lunar sample scientists Gary Lofgren
and Andrea Mosie. Lofgren is the lunar curator at Johnson and has
been with the lab since the Apollo era. Mosie has been a scientist in
the current lab since it opened in 1979.
To participate in the interviews, journalists should contact Victor
Scott at 281-483-4942 or victor.j.scott@nasa.gov no later than noon,
July 1.
The public also will have an opportunity to take a virtual tour of the
lunar sample lab and ask the scientists questions via Ustream and
Twitter from 12 p.m. to 1 p.m. The public can submit questions to
Johnson's Twitter account, @NASA_Johnson, beginning today and via
Ustream live during the event. The tour and the question-and-answer
session also will be broadcast live on NASA TV.
To view the live broadcast on Ustream and submit questions, visit:
http://www.ustream.tv/channel/nasa-live
Between 1969 and 1972, six Apollo spaceflight missions brought back
842 pounds and 22,000 separate samples of lunar rocks, core samples,
pebbles, sand and dust from the lunar surface. The majority of the
samples are stored at the Apollo Lunar Sample Processing Lab and
Storage Vaults at Johnson, with a small subset held at the White
Sands Space Harbor in New Mexico. The samples continue to be studied
by scientists around the world. The work has provided invaluable
knowledge as NASA prepares to return to the moon.
The NASA Live Interview Media Outlet satellite channel will be used
for the event. The channel is a digital satellite C-band downlink by
uplink provider Americom. It is on satellite AMC 6, transponder 5C,
located at 72 degrees west, downlink frequency 3785.5 Mhz based on a
standard C-band 5150 Mhz L.O., vertical polarity, FEC is 3/4, data
rate is 6.00 Mhz, symbol rate is 4.3404 Mbaud, transmission DVB,
minimum Eb/N0 is 6.0 dB. For NASA TV streaming video, downlink and
schedule information, visit:
http://www.nasa.gov/ntv
For more information about the Apollo lunar samples and lab, visit:
http://curator.jsc.nasa.gov/lunar/index.cfm
NASA is planning a number of activities and events in 2009 as the 40th
anniversary of the first moon landing on July 20 approaches. The
events will celebrate the Apollo Program, its accomplishments, and
the benefits to our lives today. For more information, visit:
http://www.nasa.gov/apollo40th
Canada Meteorite News- Riding with Meteorites 27JUN09
Riding with Meteorites - opens June 27 at Canadian Museum of Nature
Ottawa Start (press release)
Riding with Meteorites, a special temporary exhibition, opens at the Canadian Museum of Nature on Saturday, June 27. This fun, interactive exhibit will ...
26 June 2009
Meteorite News- Vestan Granite 26JUN09
The Complicated Geologic History of Asteroid 4 Vesta
--- Meteorites from asteroid 4 Vesta show that it contains patches of granite-like rock.Written by G. Jeffrey Taylor
Hawai‘i Institute of Geophysics and Planetology
Planetary scientists are pretty sure that almost all of the HED meteorites come from the fourth-largest asteroid, 4 Vesta. HED stands for the three types of rocks that make up the group. As cosmochemists have studied the meteorites over the years, their view of the geologic history of the asteroid has become progressively more complicated. Jean-Alix Barrat and Marcel Bohn (CNRS and University of Brest, France), Philippe Gillet (CNRS and Ecole Normale Supérieure de Lyon, France), and Akira Yamaguchi (National Institute of Polar Research, Tokyo, Japan) have found that Vesta is even more complicated--and interesting--than we thought. ... (more) http://www.psrd.hawaii.edu/June09/Vesta.granite-like.html
Meteor/Meteorite News 26JUN09
Milestone birthday approaches for Wetumpka
Prattville Progress - - Jun 24, 2009... over 80 million years ago by a large meteor that struck the area -- it remains the lone confirmed meteorite crater in the entire state of Alabama. ...- The cause of the Tunguska explosion of 1908 has long been debated – a new study based on the behaviour of the space shuttle's exhaust suggests a comet was to blameNew Scientist - Jun 25 9:39 AM
- Want more Straight Dope? Robbers in Barren Times Cecil cashes in on notorious money-makers. Posted: June 10, 2009 NASA Sucks at Product Placement Cecil again goes over why Tang didn't make the gov't rich.Washington City Paper - Jun 24 3:12 PM
-
Volcanoes and Meteoroids Make Materials Harder Than Diamond
Discover Magazine - - Jun 24, 2009Lonsdaleite forms only under the extreme pressure and heat accompanying meteorite impacts, while wurtzite boron nitride is a by-product of intense volcanic ... -
A library of the world's most unusual compounds
Financial Times - - Jun 19, 2009He wants to travel to a remote village in northern Bosnia-Herzegovina to recover a meteorite that smashed through the roof of a farmhouse there, ...
25 June 2009
Southern Arizona Bolide- Sierra Vista has Reports 23JUN09 - 25JUN09
Meteor lights up the sky
Loud boom heard, bright streak seen across the region late Tuesday
By Derek Jordan and Ted Morris
Herald/Review
Published/Last Modified on Thursday, Jun 25, 2009 - 02:18:09 am MST
SIERRA VISTA — A number of southeastern Arizona residents reported seeing a bright meteor in the night sky Tuesday, followed by a loud explosion-like sound as it fell to Earth. ... more
http://www.svherald.com/articles/2009/06/25/news/doc4a430805ea916104103851.txt
Arizona Meteor News- Video and Update on 23JUN Meteor 25JUN09
Fireball Seen Over Tucson June 23
Tucson CitizenWednesday, June 24th, 2009
Numerous people called in to news stations and police last night, around 9:20 pm, when a bright fireball lit up the skies over Tucson. It may have been a chunk of cosmic debris, or it could have been a satellite or pieces of space junk burning up in the atmosphere. ... (more)
http://tucsoncitizen.com/lizard/tag/arizona-meteor/
A security camera captured the terminal burst:
http://tinyurl.com/nnv39d
Geoff Notkin interview with Tucson TV station KOLD 13 on morning news:
http://tinyurl.com/luaoc5
24 June 2009
Pennsylvania Meteor/Meteorite History- Chicora Meteor 24JUN1938 24JUN09
updated posting- 24JUN2014 - Click Link-
http://lunarmeteoritehunters.blogspot.jp/2014/06/june-24-1938-500-ton-meteorite-falls.html
Numerous reports of the Chicora Meteor mention that a cow was struck and injured by a falling stone; other accounts say that the cow was in fact killed by the stone.
The meteor was an olivine-hypersthene chondrite. Its remains were split between the Carnegie Museum of Natural History and the Smithsonian Institution.
The sound and light of the exploding meteor were initially mistaken for an explosion in the powder magazine at West Winfield, and was compared by investigators FW Preston, EP Henderson and James R Randolph as comparable to with the Halifax explosion of 1917 in destructive power. "If it had landed on Pittsburgh there would have been few survivors", they stated.[3]
Source: http://en.wikipedia.org/wiki/Chicora,_Pennsylvania
http://lunarmeteoritehunters.blogspot.jp/2014/06/june-24-1938-500-ton-meteorite-falls.html
Chicora Meteor
On June 24, 1938 a meteorite fell in the vicinity of Chicora,Pennsylvania. Named the "Chicora Meteor", the 450+ tonne meteor exploded approximately twelve miles above the Earth's surface. Only two fragments of the meteorite were found following initial investigations. They had masses 242g and 61g, and were discovered some miles short of the calculated point of impact of the main mass - which is yet to be found. Two more small fragments were found nearby in 1940.Numerous reports of the Chicora Meteor mention that a cow was struck and injured by a falling stone; other accounts say that the cow was in fact killed by the stone.
The meteor was an olivine-hypersthene chondrite. Its remains were split between the Carnegie Museum of Natural History and the Smithsonian Institution.
The sound and light of the exploding meteor were initially mistaken for an explosion in the powder magazine at West Winfield, and was compared by investigators FW Preston, EP Henderson and James R Randolph as comparable to with the Halifax explosion of 1917 in destructive power. "If it had landed on Pittsburgh there would have been few survivors", they stated.[3]
Source: http://en.wikipedia.org/wiki/Chicora,_Pennsylvania
Arizona Meteor News- Southern Arizona Fireball 24JUN09
Southern Arizona Fireball – June 23
Southern Arizona Fireball – June 23, 2009 ... From Loretta: “I saw a giant meteor june 23 about 915 or 920. It was in the southern sky and went from ...transientsky.wordpress.com/.../23/southern-arizona-fireball-june-23/
22 June 2009
France Meteorite News- Ensisheim Meteorite Fair 2009 22JUN09
02:45 -
Opening ceremony. ... meteorite ensisheim ...
youtube.com
Italy Meteorite News- Italian Fireball 22JUN09
Un meteorite sopra San Martino
(A meteorite over Saint Martino )Tuscia Web - Viterbo - 22 giugno 2009
Il meteorite è stato descritto dai testimoni come un oggetto luminoso che volava ad alta velocità sopra San Martino e che probabilmente è caduta a qualche ... (more)
Meteorite News- Rock Bands Spin an Oxygen Record 22JUN09
Rock Bands Spin an Oxygen Record
Astrobiology Magazine - Michael Schirber
... compare these results to other carbonaceous-mineral associations known to be of non-biological origin, including minerals found in a Martian meteorite. ... (more)
http://www.astrobio.net/index.php?option=com_exclusive&task=detail&id=3162
Astrobiology Magazine - Michael Schirber
... compare these results to other carbonaceous-mineral associations known to be of non-biological origin, including minerals found in a Martian meteorite. ... (more)
http://www.astrobio.net/index.php?option=com_exclusive&task=detail&id=3162
20 June 2009
Meteorite News- Meteorite-related Videos 20JUN09
Huge Crater on Earth!
02:03 -
Meteor Crater is perhaps the best-known example of a small impact crater on the Earth.
youtube.com
02:03 -
Meteor Crater is perhaps the best-known example of a small impact crater on the Earth.
youtube.com
multimedia.boston.com
Space scientist Rob Matson shows Neil deGrasse Tyson his favorite meteorite hunting ground. This video podcast was produced by Julia Cort and Susan K. Lewis and edited by ...
youtube.com
03:00 - Ruben Garcia made this video about meteorites and meteorite hunting for the sole purpose of entering it into a video contest.
youtube.com
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