Free Newsletters - Space - Defense - Environment - Energy - Solar - Nuclear
..
. 24/7 Space News .




NUKEWARS
Researchers See Ionospheric Signature of North Korean Nuclear Test
by Staff Writers
Fredericton, Canada (SPX) Feb 20, 2013


File image.

The explosion of an underground nuclear device by North Korea this week disturbed the Earth's ionosphere. The blast generated infrasonic waves that propagated all the way to the upper atmosphere causing small variations in the density of electrons there.

By analyzing the signals from GPS satellites collected at ground-based monitoring stations in South Korea and Japan, scientists at the California Institute of Technology's Jet Propulsion Laboratory, Purdue University, and the Korea Advanced Institute of Science and Technology independently confirmed the ionospheric disturbance generated by the North Korean test.

The researchers used the same GPS signals that are used by surveyors for precise positioning. These signals are slightly perturbed as they transit the ionosphere, and by processing the collected data with sophisticated software, the researchers were able to detect the small effect that the explosion-induced atmospheric waves had on the distribution of the ionosphere's electrons.

The same technique is being used by the researchers and others to study the ionospheric effects from natural hazards such as tsunamis, earthquakes, and volcanic eruptions.

.


Related Links
Geodetic Research Laboratory
Learn about nuclear weapons doctrine and defense at SpaceWar.com
Learn about missile defense at SpaceWar.com
All about missiles at SpaceWar.com
Learn about the Superpowers of the 21st Century at SpaceWar.com






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





NUKEWARS
N. Korea envoy warns S. Korea of 'final destruction'
Geneva (AFP) Feb 19, 2013
South Korea faces "final destruction" if Seoul and its allies continue to push for tougher UN resolutions against North Korea's nuclear programme, Pyongyang warned Tuesday. "We have never recognised the propagandist resolutions on sanctions by the UN Security Council," North Korean envoy Jon Yong Ryong told a session of the UN Conference on Disarmament. "As the saying goes, 'a newborn pu ... read more


NUKEWARS
Building a lunar base with 3D printing

US, Europe team up for moon fly-by

Russia to Launch Lunar Mission in 2015

US, Europe team up for moon fly-by

NUKEWARS
Rover finds gray rock beneath Red Planet's surface

Bleach could hamper Mars life search

At the mouth of the red valley

NASA's MAVEN Mission Completes Assembly

NUKEWARS
NASA plant study headed to space station

NASA Spinoff 2012 Features New Space Tech Bettering Your Life Today

Orion Lands Safely on Two of Three Parachutes in Test

Supersonic skydiver even faster than thought

NUKEWARS
Welcome Aboard Shenzhou 10

Reshuffle for Tiangong

China to launch 20 spacecrafts in 2013

Mr Xi in Space

NUKEWARS
Temporary Comm Loss Interrupts Crew's Day

Low-Gravity Flights Will Aid ISS Fluids and Combustion Experiments

Progress docks with ISS

NASA to Send Inflatable Pod to International Space Station

NUKEWARS
Another Sea Launch Failure

ILS Concludes Yamal 402 Proton Launch Investigation

Ariane 5 delivers record payload off back-to-back launches this week

Eutelsat and Arianespace sign new multi-year multiple launch services agreement

NUKEWARS
Earth-like planets are right next door

Direct Infrared Image Of An Arm In Disk Demonstrates Transition To Planet Formation

Kepler Data Suggest Earth-size Planets May Be Next Door

Earth-like planets may be closer than thought: study

NUKEWARS
'Explorers' to don Google Internet glasses

Sony pressured to change game with PS4 console

Researchers strain to improve electrical material and it's worth it

Explosive breakthrough in research on molecular recognition




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement