SuperDARN Workshop, 2011 Upstream Pc3 ULF wave signatures observed near the Earth's cusp Tim Yeoman Darren Wright (Leicester) Mark Engebretson, Fei Lu,

Slides:



Advertisements
Similar presentations
SuperDARN is a network of HF radars (8-20 MHz) used to study the convection in the Earth's ionosphere at altitudes between 90 and 400 km and at magnetic.
Advertisements

Abstract Using observations at 1-Hz sampling rate from the Greenland west coast magnetometer chain we study ULF waves over a wide frequency band and a.
The Importance of Wave Acceleration and Loss for Dynamic Radiation Belt Models Richard B. Horne M. M. Lam, N. P. Meredith and S. A. Glauert, British Antarctic.
Electron Acceleration inside Jupiter’s Radiation Belt and the Origin of Synchrotron Radiation Richard B. Horne 1 R. M. Thorne 2, S. A. Glauert 1, J. D.
E. Amata M. Candidi (1), M.F. Marcucci (1), S. Massetti (1), P. Francia (3), U. Villante (3) (1) Istituto di Fisica dello Spazio Interplanetario (IFSI),
A High-Latitude Window to Geospace Dynamics: PENGUIn Pilipenko V.A.
C. Papadimitriou 1,2,G. Balasis 1, I. A. Daglis 2,1 R. Haagmans 3 1 Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing, National.
Figure 4: Overview of the geometry of the Rankin Inlet and Inuvik radar in MLT coordinates on Aug 08 th Merged vectors are shown in black. AMPERE.
AJ Ribeiro Irregs.Short Meeting Title, Date A survey of plasma irregularities seen by the mid-latitude Blackstone SuperDARN radar.
Ionospheric Convection and Field-Aligned Currents During Strong Magnetospheric Driving: A SuperDARN/AMPERE Case Study L. B. N. Clausen (1), J. B. H. Baker.
Adrian Grocott *, Steve Milan, Mark Lester, Tim Yeoman University of Leicester, U.K. *currently visiting NIPR, Japan Mervyn Freeman British Antarctic Survey,
1 Sounding rocket measurements of decameter structures in the cusp K. Oksavik 1, J. Moen 1,2, D. A. Lorentzen 1, F. Sigernes 1, T. Abe 3, Y. Saito 3, and.
SuperDARN and reversed flow events in the cusp
31 May 2011SuperDARN Workshop, 29 May - 3June 2011, Hanover, US 1 Short-period Doppler shift variations in the polar cap: ULF waves or something else?
& Atmospheric StudiesPhysics & Engineering Physics, University of Saskatchewan Hemispheric Comparison of Signatures of.
Magnetometer and radar study of the ionospheric convection response to sudden changes in the interplanetary magnetic field R. A. D. Fiori 1,2, D. Boteler.
Case studies of coordinated THEMIS-SuperDARN observations of field line resonances Elsayed R. Talaat The Johns Hopkins University Applied Physics Laboratory.
1 Geomagnetic/Ionospheric Models NASA/GSFC, Code 692 During the early part of April 6, 2000 a large coronal “ejecta” event compressed and interacted with.
On the importance of IMF |B Y | on polar cap patch formation Qinghe Zhang 1, Beichen Zhang 1, Ruiyuan Liu 1, M. W. Dunlop 2, M. Lockwood 2, 3, J. Moen.
SuperDARN Scheduling Working Group Report Tim Yeoman for Gareth Chisham and the Scheduling Working Group SuperDARN Workshop 2011.
SuperDARN real time products for Space Weather Ermanno Amata INAF Istituto di Fisica dello Spazio Interplanetario Roma ESWW5, Bruxelles, 20 November 2008.
THE ULTRASOUND IMAGE: GENERATION AND DISPLAY
Van Allen Probes, NOAA, and Ground Observations of a Pc 1 Wave Event Extending 12 Hours in MLT Mark Engebretson 1, Jennifer Posch 1, John Wygant 2, Craig.
June 19, 2009 R. J. Strangeway – 1RBSP SWG, Redondo Beach, CA Importance of Ground Magnetometers to NASA Heliophysics Missions Several U.S. projects have.
Solar cycle dependence of EMIC wave frequencies Marc Lessard, Carol Weaver, Erik LindgrenMark Engebretson University of New HampshireAugsburg College Introduction.
Magnetospheric ULF wave activity monitoring based on the ULF-index OLGA KOZYREVA and N. Kleimenova Institute of the Earth Physics, RAS.
Comparisons of Inner Radiation Belt Formation in Planetary Magnetospheres Richard B Horne British Antarctic Survey Cambridge Invited.
1 Origin of Ion Cyclotron Waves in the Polar Cusp: Insights from Comparative Planetology Discovery by OGO-5 Ion cyclotron waves in other planetary magnetospheres.
EISCAT Svalbard Radar studies of meso-scale plasma flow channels in the polar cusp ionosphere Y. Dåbakk et al.
14 May JIM M. RAINES University of Michigan DANIEL J. GERSHMAN, THOMAS H. ZURBUCHEN, JAMES A. SLAVIN, HAJE KORTH, and BRIAN J. ANDERSON Magnetospheric.
MOP 2011, BOSTON, MA, USAJuly 14, 2011 Norbert Krupp Open-Close Field line Boundary Characterization of Saturn‘s magnetosphere using Cassini MIMI-LEMMS.
T. Ogawa 1, T. Adachi 2, and N. Nishitani 3 1) NICT, Japan 2) Stanford Univ., USA 3) STE Lab., Nagoya Univ., Japan Medium-Scale Traveling Ionospheric Disturbances.
Intrinsic Short Term Variability in W3-OH and W49N Hydroxyl Masers W.M. Goss National Radio Astronomy Observatory Socorro, New Mexico, USA A.A. Deshpande,
Solar cycle dependence of EMIC wave frequencies Marc Lessard, Carol Weaver, Erik Lindgren 1 Mark Engebretson University of New HampshireAugsburg College.
Fractal reconnection at the Earth’s magnetopause and associated ionospheric convection. Gary Abel, Iain Coleman, Mervyn Freeman and Gareth Chisham British.
Observing ion cyclotron waves M. R. Lessard, M. Widholm, P. Riley, H. Kim M. J. Engebretson University of New Hampshire Augsburg College NSF Workshop on.
Predicting Global Auroral Power: A Merging Term Plus a Viscous Term Works Best P. T. Newell, T. Sotirelis, K. Liou, and C.-I. Meng The Johns Hopkins University.
11 th EISCAT Workshop, Menlo Park, August 2003 Session: M-I Coupling Magnetospheric plasma drift as simultaneously observed by Cluster (EDI) and.
A. Vaivads, M. André, S. Buchert, N. Cornilleau-Wehrlin, A. Eriksson, A. Fazakerley, Y. Khotyaintsev, B. Lavraud, C. Mouikis, T. Phan, B. N. Rogers, J.-E.
Relating the Equatorward Boundary of the Diffuse Redline Aurora to its Magnetospheric Counterpart Grant, Jeff 1 ; Donovan, Eric 1 ; Spanswick, Emma 1 ;
Yvonne Rinne, Departement of Physics, University of Oslo Mesoscale transient flow channels observed in the cusp ionosphere by the EISCAT Svalbard Radar.
Extremely-Low-Frequency Whistler-Like Waves Observed at South Pole Station Drastically lower frequency ELF events are found between Hz, as opposed.
17th Cluster workshop Uppsala, Sweden , May 12-15, 2009
Global Structure of the Inner Solar Wind and it's Dynamic in the Solar Activity Cycle from IPS Observations with Multi-Beam Radio Telescope BSA LPI Chashei.
UTLS Workshop Boulder, Colorado October , 2009 UTLS Workshop Boulder, Colorado October , 2009 Characterizing the Seasonal Variation in Position.
Pc1 Occurrence Distributions: GOES, Halley, and Van Allen Probes Mark Engebretson 1, Jennifer Posch 1, Joe Perrin 1, Nate Roisen 1, Elly Bier 1, Mack Ohnsted.
Space-based studies of low-latitude ionospheric forcing originating in the lower atmosphere Thomas J. Immel, Scott L. England Space Sciences Laboratory,
SuperDARN:Looking ahead to RBSP Jim Wild Physics Department, Lancaster University, UK Tim Yeoman & Robert Fear Department of Physics & Astronomy, University.
SuperDARN Observations of ULF Pulsations During a Substorm Expansion Phase Onset N. A. Frissell, J. B. H. Baker, J. M. Ruohoniemi, L. B. N. Clausen, R.
Combined Sounding Rocket and SuperDarn/EISCAT Radar Observations of Plasma Convection, Shear, Irregularities and other Phenomena in the Cusp and Boundary.
SS Special Section of JGR Space Physics Marks Polar’s 5th Anniversary September 4, 1996 This April special section is first of two Polar special sections.
Space Science MO&DA Programs - April Page 1 SS Special Section of JGR Space Physics Marks Polar’s 5th Anniversary September 4, 1996 This April special.
Anatoly V. Streltsov Embry-Riddle Aeronautical University Excitation of Magnetospheric Resonators with HAARP RESONANCE/HAARP November 8, 2011 College Park,
Statistical Characterization of sub-auroral polarization stream using using large scale observations by mid- latitude SuperDARN radars B. S. R. Kunduri.
TBD: Contributions of MIT Coupling to Important Features… Open-closed field line boundary Equatorward boundaries of particle precipitation Plasmapause.
Baker Tech SuperDARN Large-Scale Observations of the Sub-Auroral Polarization Stream (SAPS) From.
Evaluate the effectiveness of the method. Independently design a practical. Outcomes Use the terms interval, range and precision correctly. Burning Splints.
Evolution of the poloidal Alfven waves in 3D dipole geometry Jiwon Choi and Dong-Hun Lee School of Space Research, Kyung Hee University 5 th East-Asia.
Modulation of chorus wave intensity by ULF waves from Van Allen Probes Observation Lunjin Chen 1, Zhiyang Xia 1, Lei Dai 2 1 Physics Dept., The University.
Dynamics of the auroral bifurcations at Saturn and their role in magnetopause reconnection LPAP - Université de Liège A. Radioti, J.-C. Gérard, D. Grodent,
A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations
Department of Electrical and Computer Engineering, Virginia Tech
WP-3D Orion Instrumentation
Characterization of Field Line Topologies Near the Magnetopause Using Electron Pitch Angle Measurements D. S. Payne1, M. Argall1, R. Torbert1, I. Dors1,
Evidence for Dayside Interhemispheric Field-Aligned Currents During Strong IMF By Conditions Seen by SuperDARN Radars Joseph B.H. Baker, Bharat Kunduri.
Propagation Characteristics of EMIC Waves in the High Latitude Ionospheric Waveguide Hyomin Kim1 Marc Lessard2
A Statistical Analysis of Interhemispheric Pi1B Seasonal Variations
A statistical study of Cluster and ground-based observations of Pi1B pulsations at substorm onset Marc Lessard1, Eric Lund1, Christopher Mouikis1, Yasong.
SuperDARN and SCANDI data
On Strong Coupling between the Harang Reversal Evolution and Substorm Dynamics: A Synthesis of SuperDARN, DMSP and IMAGE Observations Shasha Zou1, Larry.
Presentation transcript:

SuperDARN Workshop, 2011 Upstream Pc3 ULF wave signatures observed near the Earth's cusp Tim Yeoman Darren Wright (Leicester) Mark Engebretson, Fei Lu, and Jennifer Posch (Augsburg, USA); Marc Lessard and Hyomin Kim (University of New Hampshire, USA) SuperDARN Workshop, 2011

Gary, 1981Takahashi, 1984

SuperDARN Workshop, 2011 Howard and Menk, 2005 Engebretson et al., 2005

SuperDARN Workshop, 2011 The Augsburg induction magnetometer array and the Hankasalmi radar

SuperDARN Workshop, 2011 Intervals were selected with strong Pc3 activity, where the upstream ACE cone angle is conducive to upstream wave generation, and good cusp data coverage is available from Hankasalmi, with high time resolution data on Channel B beam 9 21 Feb 2008

SuperDARN Workshop, Hz sampled induction coil data FFT length 20 min, 5 min slip NAL LYR HOR Hankasalmi Channel B data: Beam 9, 3 s sampling

SuperDARN Workshop, 2011 Identify the cusp: Width >200 m s -1 5 min average Sum wave power between 20 and 40 mHz

SuperDARN Workshop, 2011 LYR largest at the beginning and end, when the cusp is at highest latitudes, HOR largest when cusp is at lowest latitudes Peak power ~ 3 - 4° equatorward of cusp

SuperDARN Workshop, 2011 LYR largest at the beginning. HOR largest when cusp moves lower both when HOR is poleward and equatorward of the cusp Peak power ~ 2° equatorward of cusp Combine together 14 days with good Pc3 activity: 1364 data points for comparison

SuperDARN Workshop, 2011

Upsteam wave power will very with time: normalise with power at Halley, well equatorward of the cusp

SuperDARN Workshop, 2011

The CUTLASS Hankasalmi radar is an excellent diagnostic of the cusp location for use with the Augsburg magnetometer array on Svalbard Pc3 ULF wave activity peaks ~2° equatorward of the cusp, rather than in the cusp itself. Pc3 ULF wave activity can be seen to be modulated as the open- closed field line boundary, as predicted from the Hankasalmi radar data, migrates across the magnetometer array Wave power occupies a fairly broad latitude range equatorward of the open-closed field line boundary, but drops sharply poleward of it. The spatial structure of the wave power within the magnetosphere seems to be as important as its temporal variability. Howard and Menk (2005) seem to have a point. Conclusions

SuperDARN Workshop, 2011