ITW2007: P. Campus Tokyo, 13-16 November 2007 The IMS Infrasound Network: detection of a large...
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Transcript of ITW2007: P. Campus Tokyo, 13-16 November 2007 The IMS Infrasound Network: detection of a large...
![Page 1: ITW2007: P. Campus Tokyo, 13-16 November 2007 The IMS Infrasound Network: detection of a large variety of events, including volcanic eruptions Dr. Paola.](https://reader035.fdocuments.in/reader035/viewer/2022070410/56649f2a5503460f94c438aa/html5/thumbnails/1.jpg)
ITW2007: P. Campus Tokyo, 13-16 November 2007
The IMS Infrasound Network: detection of a large variety of events, including volcanic
eruptionsDr. Paola Campus,
Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) IMS, Installation and Certification Group, Acoustic Monitoring Project
e-mail: [email protected]
ITW2007: P. Campus Tokyo, 13-16 November 2007
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Examples of infrasound signals
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ITW2007: P. Campus Tokyo, 13-16 November 2007
The International Monitoring
System (IMS) Infrasound Network
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Earthquakes
Irian Jaya, 2002/10/10, Mw=7.5IS07, Warramunga, NT, Australia:
~2000km
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Irian Jaya, 2002/10/10, Mw=7.5IS07
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Irian Jaya, 2002/10/10, Mw=7.5IS07
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Irian Jaya, 2002/10/10, Mw=7.5IS07: seismic waves
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Irian Jaya, 2002/10/10, Mw=7.5IS07: seismic waves
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Irian Jaya, 2002/10/10, Mw=7.5IS07: infrasound waves
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Irian Jaya, 2002/10/10, Mw=7.5IS07: infrasound waves
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Infrasound might help complement the information about earthquakes especially
when, for local events, local seismic networks are very sparse or non existing
Earthquakes
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Bolides
Chicago fireball, 2003/03/27
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ITW2007: P. Campus Tokyo, 13-16 November 2007
A few minutes after midnight (local time) on March 27, 2003, a huge bolide entered
the atmosphere, moving across Ohio, Illinois, Indiana and Wisconsin and
producing a luminous blue flash.
Fragments of the bolide hit an inhabited area of about 10 km, located south of
Chicago.
Chicago fireball
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Chicago fireball, IS10, Lac du Bonnet, Canada: ~1170km
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Chicago fireball, IS10, Lac du Bonnet, Canada: ~1170km
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Chicago fireball, IS10, Lac du Bonnet, Canada: ~1170km
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Two different bolides following two different trajectories?
Chicago fireball, IS10, Lac du Bonnet, Canada: ~1170km
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Chicago fireball, IS10, Lac du Bonnet, Canada: ~1170km
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Chicago fireball, IS10, Lac du Bonnet, Canada: ~1170km
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Movements of glaciers and calving of icebergs
IS18, Qaanaaq, Northern Greenland, Danemark
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ITW2007: P. Campus Tokyo, 13-16 November 2007
IS18, Qaanaaq, Northern Greenland
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ITW2007: P. Campus Tokyo, 13-16 November 2007
IS18, Qaanaaq, Northern Greenland
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ITW2007: P. Campus Tokyo, 13-16 November 2007
IS18, infrasound signals: freq. 0.4-6 Hz
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ITW2007: P. Campus Tokyo, 13-16 November 2007
IS18: long duration infrasound signal freq. 0.4-6 Hz
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Slow movement of glacier or tide associated to it?
IS18: long duration infrasound signal freq. 0.4-6 Hz
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ITW2007: P. Campus Tokyo, 13-16 November 2007
IS18: short duration infrasound signal 1: freq. 0.4-6 Hz
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ITW2007: P. Campus Tokyo, 13-16 November 2007
IS18: short duration infrasound signal 1: freq. 0.4-6 Hz
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ITW2007: P. Campus Tokyo, 13-16 November 2007
IS18: short duration infrasound signal 2: freq. 0.4-6 Hz
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ITW2007: P. Campus Tokyo, 13-16 November 2007
IS18: short duration infrasound signal 2: freq. 0.4-6 Hz
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ITW2007: P. Campus Tokyo, 13-16 November 2007
IS18: short duration infrasound signal 3: freq. 0.4-6 Hz
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ITW2007: P. Campus Tokyo, 13-16 November 2007
IS18: short duration infrasound signal 3: freq. 0.4-6 Hz
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Infrasound might help monitor the effects of global warming through the systematic observation of movements of glaciers and
calving of icebergs
Movements of glaciers and calving of icebergs
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Volcanoes
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Volcanic hazard: a serious threat to
-Nearby settlements-Civil Aviation
The IMS Infrasound Network can contribute to volcano monitoring
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ITW2007: P. Campus Tokyo, 13-16 November 2007
The increased number of IMS Infrasound Stations allows us to monitor several active volcanic
areas around the world
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Aleutian Islands
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ITW2007: P. Campus Tokyo, 13-16 November 2007
AUGUSTINE Alaska, Aleutian Islands,
Kamishak Bay, Southern Cook Inlet 59.363N, 153.43W; summit elev. 1,252 m
Augustine is the most active volcano of the eastern Aleutian arc.
On January 13, 2006 the volcano entered a period of repetitive and explosive eruptions. Each event produced
ash plumes, mudflows, and pyroclastic flows
Volcanoes
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ITW2007: P. Campus Tokyo, 13-16 November 2007
AUGUSTINE, 59.363N, 153.43W, 1252m
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ITW2007: P. Campus Tokyo, 13-16 November 2007
AUGUSTINE, 59.363N, 153.43W, 1252m
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ITW2007: P. Campus Tokyo, 13-16 November 2007
IS53: Dist. ~ 675 km; Prop.Time ~00:37
Frequency band: 0.4-8 Hz
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ITW2007: P. Campus Tokyo, 13-16 November 2007
IS53: Dist. ~ 675 km; Prop.Time ~00:37
Frequency band: 0.4-8 Hz
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ITW2007: P. Campus Tokyo, 13-16 November 2007
Kamchatka Peninsula
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ITW2007: P. Campus Tokyo, 13-16 November 2007
KARYMSKY Kamtchatka Peninsula, Russian Federation 54.05°N, 159.43°E; summit elev. 1,536 m
Karymsky is the most active volcano of the eastern volcanic zone of Kamtchatka.
Growth of the lava dome since the end of 2005. Several ash explosions on the beginning of 2006.
First example: ash plumes registered on 2006/01/12. No origin time was available
Volcanoes
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ITW2007: P. Campus Tokyo, 13-16 November 2007
KARYMSKY, 54.0N, 159.5E, 4875m
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ITW2007: P. Campus Tokyo, 13-16 November 2007
IS44, Petropavlovsk-Kamchatski, Russian Federation
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ITW2007: P. Campus Tokyo, 13-16 November 2007
IS44: Dist.~154km; Prop.Time ~00:08
Frequency band: 0.4-6 Hz
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ITW2007: P. Campus Tokyo, 13-16 November 2007
IS44: Dist.~154km; Prop.Time ~00:08
Frequency band: 0.4-6 Hz
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ITW2007: P. Campus Tokyo, 13-16 November 2007
IS44: Dist.~154km; Prop.Time ~00:08
Frequency band: 0.4-6 Hz
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ITW2007: P. Campus Tokyo, 13-16 November 2007
KARYMSKY
Two events close in time, with no significant variation in the meteorological conditions
(wind speed, wind direction, temperature):
the difference in the waveforms can be associated to differences in the source
Volcanoes
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ITW2007: P. Campus Tokyo, 13-16 November 2007
KARYMSKY
From 07 May to 14 May the seismicity was above background levels, with 330-450 shallow
earthquakes per day. Based on seismic data, possible ash and gas explosions.
No origin time was available
Volcanoes
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ITW2007: P. Campus Tokyo, 13-16 November 2007
IS44: Dist.~154km; Prop.Time ~00:08
Frequency band: 0.4-8 Hz
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ITW2007: P. Campus Tokyo, 13-16 November 2007
IS44: Dist.~154km; Prop.Time ~00:08
Frequency band: 0.4-8 Hz
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ITW2007: P. Campus Tokyo, 13-16 November 2007
The presence of an infrasound station in a volcanic area can be extremely useful to
monitor the beginning of an eruption and to define its origin time. In addition, an
infrasound station can be used both as a unique volcano monitoring tool in case other
monitoring systems are not available (or cannot be used), and as a complementary tool to other, already existing, monitoring systems.
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ITW2007: P. Campus Tokyo, 13-16 November 2007
The IMS Infrasound Network is not only a powerful tool to monitor nuclear explosions, but it can also provide a significant contribution to monitor natural events:•Complement or provide information about earthquakes •Complement or provide information about bolides, meteorites, auroras•Monitor effects of global warming•Complement or provide information about volcanic eruptions (origin time, source characteristics)
Conclusions