Infrasonic Observations of Some Atmospheric Phenomena Ludwik Liszka Swedish Institute of Space Physics, SE-901 87, Umeå, Sweden.

Slides:



Advertisements
Similar presentations
Forecasting the weather Weather: The state of the atmosphere at a specific time and plac e. Meteorologist: scientists who study the atmosphere Weather.
Advertisements

Piezoceramic Sensors and Infrasound Technology
Atmospheric Internal Solitary Waves observed by MERIS/ASAR in the Mozambique Channel, Africa. Jorge Magalhães J. C. da
THE AUSTRALIAN NATIONAL UNIVERSITY Infrasound Technology Workshop, November 2007, Tokyo, Japan OPTIMUM ARRAY DESIGN FOR THE DETECTION OF DISTANT.
TRANSMISSION FUNDAMENTALS Review
Statistical detection of meteor showers using data from the Swedish infrasound network Ludwik Liszka Swedish Institute of Space Physics SLU Umea,
Phase Coherence on Open Field Lines Associated with FLRs Abiyu Nedie, Frances Fenrich & Robert Rankin University of Alberta Edmonton, Alberta, Canada 2011.
Atmospheric phase correction for ALMA Alison Stirling John Richer Richard Hills University of Cambridge Mark Holdaway NRAO Tucson.
Approaches to the infrasound signal denoising by using AR method N. Arai, T. Murayama, and M. Iwakuni (Research Dept., Japan Weather Association) 2008.
RESEARCH RESULTS ON ATMOSPHERIC ELECTRIC FIELD AT OBSERVATORY PARATUNKA IN KAMCHATKA. V.V. Kuznetsov, N.V. Cherneva, G.I. Druzhin, I.Y. Babahanov. Institute.
Dr. Jie Zou PHY 1151G Department of Physics1 Chapter 14 Waves and Sound.
Asymmetry Reversal in Solar Acoustic Modes Dali Georgobiani (1), Robert F. Stein (1), Aake Nordlund (2) 1. Physics & Astronomy Department, Michigan State.
Where does background noise in the ocean come from? ORE 654 Guest Lecture Fred Duennebier October 21, 2011.
V. M. Sorokin, V.M. Chmyrev, A. K. Yaschenko and M. Hayakawa Strong DC electric field formation in the ionosphere over typhoon and earthquake regions V.
THE AUSTRALIAN NATIONAL UNIVERSITY Infrasound Technology Workshop, 3-7 November 2008, Bermuda WIND NOISE REDUCTION AT IMS INFRASOUND STATIONS Douglas R.
An Introduction to Helioseismology (Local) 2008 Solar Physics Summer School June 16-20, Sacramento Peak Observatory, Sunspot, NM.
The TIDDBIT HF Doppler Radar G. Crowley and F. Rodrigues
Chapter 3 Radiation. Units of Chapter Information from the Skies 3.2 Waves in What? The Wave Nature of Radiation 3.3 The Electromagnetic Spectrum.
Ionospheric-magnetospheric VLF Wave Propagation: RPI/IMAGE-HAARP Correlative Study RPI/IMAGE-HAARP Correlative Study V. Paznukhov, B. Reinisch, G. Sales,
Guided Notes on Gathering Weather Data
Acoustics. Acoustics is the interdisciplinary science that deals with the study of all mechanical waves in gases, liquids, and solids including vibration,
An Intro to Waves Hz are units of: A. amplitudeB. frequency C. periodD. wavelength In a sound wave, rarefactions are areas of: A. high amplitude B. low.
SPATIAL AND TEMPORAL MONITORING OF THE INTERMITTENT DYNAMICS IN THE TERRESTRIAL FORESHOCK Péter Kovács, Gergely Vadász, András Koppán 1.Geological and.
Solar Atmosphere A review based on paper: E. Avrett, et al. “Modeling the Chromosphere of a Sunspot and the Quiet Sun” and some others [Alexey V. Byalko]
Thunderstorms and Tornadoes Last Lecture: We looked at severe weather events in the lower latitudes Principal weather event is the formation and movement.
Multi-level observations of magneto- acoustic cut-off frequency Ding Yuan Department of Physics University of Warwick Coventry CV4 7AL, UK
An Introduction to Helioseismology (Global) 2008 Solar Physics Summer School June 16-20, Sacramento Peak Observatory, Sunspot, NM.
Detection, Propagation, and Modeling Infrasound Technology Workshop Bermuda, 2008.
THE ANALYSIS OF THE INFRASOUND SIGNALS FROM MAY 12 EARTHQUAKE WENCHUAN CHINA Wang Xiaohang Signal Processing Department North China Institute of Computing.
Noise and Sensitivity of RasClic 91
Changes in the Performance of the IMS Infrasound Network due to Seasonal Propagation Effects David Norris and Robert Gibson BBN Technologies 1300 N. 17.
On the Role of Electric Field Changes when Calculating Thunderstorm Currents Yu.V. Shlugaev, V.V. Klimenko, E.A. Mareev Institute of Applied Physics RAS,
Acoustic-gravity wave monitoring for global atmospheric studies Elisabeth Blanc 1 Alexis Le Pichon 1 Lars Ceranna 2 Thomas Farges 1 2- BGR / B3.11, Hannover,
Infrasound Technology Workshop – Tokyo, November The Buncefield Explosion: A benchmark for infrasound analysis in Europe L. Ceranna, D. Green, A.
Infrasounds and Background Free Oscillations Naoki Kobayashi [1] T. Kusumi and N. Suda [2] [1] Tokyo Tech [2] Hiroshima Univ.
Systems Check. Milton Garces and Claus Hetzer Infrasound Laboratory, University of Hawaii, Manoa PMCC analyses of signals from the North American and.
Chapter 3 Radiation. Units of Chapter Information from the Skies 3.2 Waves in What? The Wave Nature of Radiation 3.3 The Electromagnetic Spectrum.
1 Location and Characterization of Infrasonic Events Roger Bowman 1, Greg Beall 1, Doug Drob 2, Milton Garces 3, Claus Hetzer 3, Michael O’Brien 1, Gordon.
Infrasound from lightning Jelle Assink and Läslo Evers Royal Netherlands Meteorological Institute Seismology Division ITW 2007, Tokyo, Japan.
Waves and Properties of Light
LWG, Destin (Fl) 27/1/2009 Observation representativeness error ECMWF model spectra Application to ADM sampling mode and Joint-OSSE.
Infrasound Technology WS – Bermuda, November 6 th, Microbarom signals recorded in Antarctica - a measure for sudden stratospheric warming? L. Ceranna,
Periodic Motion Common Example: Pendulum Some elements of periodic motion we can describe –Oscillation or Cycle –Period, T –Frequency, f –Amplitude, A.
ON EXPERIENCE IN USING THE PSEUDODIFFERENTIAL PARABOLIC EQUATION METHOD TO STUDY THE PROBLEMS OF LONG-RANGE INFRASOUND PROPAGATION IN THE ATMOSPHERE Sergey.
A Study on Characteristics of Seasonally Dependent Infrasound Propagation Based on the Ground-Truth Events from a Long- Term Experiment at a Quarry mine.
Analysis of regional infrasound signals at IMS infrasound array in Mongolia a RCAG/MAS P.O.B-152, Ulaanbaatar-51Mongolia b CEA/DASE BP12, Bruyeres-le-Chatel,
High Trace Velocity (HTV) infrasonic signals Possible origin.
Real-time infrasound localization on active Italian volcanoes E. Marchetti, M. Ripepe, G.Ulivieri and G. Lacanna Dipartimento di Scienze della Terra, Università.
Radio and Space Plasma Physics Group Tracking solar wind structures from the Sun through to the orbit of Mars A.O. Williams 1, N.J.T. Edberg 1,2, S.E.
Estimates of a relative delay time of signals through analysis of their forms Sergey Kulichkov, Aleksey Chulichkov Dmitrii Demin A.M.Oboukhov Institute.
Continuous wavelet transform of function f(t) at time relative to wavelet kernel at frequency scale f: "Multiscale reconstruction of shallow marine sediments.
LECTURE3 NET /11/ Lect3 NET 301. LAN DATA TRANSMISSION Layer1 Physical Layer:  Electronic, Electrical, mechanical and procedural aspects.
Infrasound Technology Workshop – Tokyo, November Listen to the Sounds of the Antarctic Atmosphere L. Ceranna, A. Le Pichon & E. Blanc BGR / B3.11,
Matthew Lagor Remote Sensing Stability Indices and Derived Product Imagery from the GOES Sounder
Milton Garces, Claus Hetzer, and Mark Willis University of Hawaii, Manoa Source modeling of microbarom signals generated by nonlinear ocean surface wave.
Efforts in Distributed Arrays for Infrasound Measurements Kevin Dillion Wheeler Howard Doug Shields Jere Singleton Miltec Nov. 3, 2008 Approved for Public.
Lecture Outlines Astronomy Today 8th Edition Chaisson/McMillan © 2014 Pearson Education, Inc. Chapter 3.
Seismic phases and earthquake location
Ct1303 LAN Rehab Alfallaj.
  Robert Gibson1, Douglas Drob2 and David Norris1 1BBN Technologies
Ct1303 LAN Rehab Alfallaj.
NET 301 LECTURE3 30/11/1436 Lect3 NET 301.
1-D Mississippi embayment sediment velocity structure and anisotropy: constraint from ambient noise analysis on a dense array Chunyu,Liu1; Charles A. Langston1.
Refinement of Bolide Characteristics from Infrasound measurements
Instrument Considerations
Infrasonic detection of meteoroid entries
Weather Analysis.
Summary of 2003 Infrasound Technology Workshop
Time-distance: methods and results
Infrasonic observations of chemical explosions
Presentation transcript:

Infrasonic Observations of Some Atmospheric Phenomena Ludwik Liszka Swedish Institute of Space Physics, SE , Umeå, Sweden

The Swedish Infrasound Network

The Lidstrom-microphone

The Lidstrom-microphone: the frequency response

Wind noise reduction: wind barriers

Selection of the frequency window The choice of frequency range for the network was based on the discovery of the ”optimum detection window” around 2 Hz by Procunier & Sharp (1970)

Infrasonic chirps

Time scale and dilation no.

Infrasonic chirps

Possible association with sprites

Cross-wind propagation

Case study on May 13, 2003: Jamton

Case study on May 13, 2003: Lycksele

Positions of events (x)

Background noise during the events Lycksele shows on that particular date the lowest amplitude of the uncorrelated background of all SIN stations, only Pa (peak value). At Jämtön the corresponding amplitude is Pa.

Satellite image May 13, UT

Occurrence of chirps StationNumber of observed chirps Kiruna None Jamton114 Lycksele5 Uppsala2

Azimuth distribution of chirps observed in Jamton

Temporal distribution of chirps during

Solar activity (sunspot numbers)

Infrasonic signatures from thunderstorms

Thunderstorm cells on July 8, 2005 at 1424UT

High resolution analysis: angle-of-arrival and trace velocity

Geometry of the signal from a cloud-to- cloud discharge

High resolution analysis of a lightning signature: azimuth

High resolution analysis of a lightning signature: trace velocity

Wavelet spectrum of the signature

High resolution analysis of a lightning signature: trace velocity vs azimuth

Trace velocity and the temperature Elevation: E=cos -1 (C/ V p ). where C is the speed of sound and Vp is the trace velocity. C =  T where T is the temperature in degrees Kelvin

Thermistor masts

Temperature layers

Temperature waves

Temperature bursts

Horizontal extent: 75m separation

Dynamical properties

Summer atmosphere: thunderstorm related temperature waves Thermistor Measurements of Temperature Oscillations During the Arctic Summer: Potential Coupling Between Severe Convective Thunderstorms and the Surface Prandtl Layer A report by Ludwik Liszka and Douglas ReVelle at: s/256abs.php

An unidentified ”sawtooth” signature

Characterized by very high trace velocities Most likely not connected with human activities (a natural phenomenon) Indications of correlation across considerable distances

An unidentified ”sawtooth” signature

Conclusion An efficient tool to monitor processes resulting in a pressure transient/transients