Local Helioseismology Workshop 2010

Stanford, CA

August 2-6, 2010

The summer workshop on Local Helioseismology will be held on August, 2-6, 2010, at Stanford, CA. The main goal of this informal workshop is to discuss the recent progress in time-distance helioseismology, ring-diagram analysis, acoustic imaging and holography, theoretical interpretation of new results, wave propagation modeling, realistic numerical simulations, perspectives and plans for analysis of SDO/HMI, SOHO/MDI, Hinode/SOT, and GONG data.

The workshop will take place in the conference room (102/103) in the Physics and Astrophysics Building at Stanford. The directions and hotel information are available at http://soi.stanford.edu/general/meetings/public_html/visitor.html .

Monday, August 2

9:30am -12:30pm: Time-Distance Helioseismology I.

Kaori Nagashima: Analysis of Hinode observations of polar regions
Dean-Yi Chou: Evolution of absorption of NOAA 11072 from HMI data
Kaori Nagashima: Origin of horizontal stripes in the time-distance diagram
Junwei Zhao: HMI time-distance helioseismology pipeline and first results

2:00 - 3:30pm: Invited lecture

George Papanicolaou: Passive sensor imaging with noise cross-correlations and iterated cross-correlations

4:00 - 6:00pm: Time-Distance Helioseismology II.

Thomas Duvall: Time-distance helioseismology from HMI
Kaori Nagashima: Statistical property of the cross-correlation functions
Junwei Zhao: Observational analysis of wave interactions with sunspots
Shane Walker: An overview of ambient noise cross correlation in underwater acoustics and how it relates to time-distance helioseismology

Tuesday, August 3

9:00am - 12:30pm: Ring-Diagram Analysis and Acoustic Holography

Rick Bogart: HMI ring-diagram pipeline and first results
Rachel Howe: Frequency/parameter comparisons for HMI ring diagram fits
Deborah Haber: Status of 3D inversion and multiple ring-fit code
Irene Gonzalez Hernandez: Holography far-side maps with HMI
Charlie Lindsey: Discriminating thermal from magnetic anomalies in sunspot subphotospheres
Martin Woodard: Helioseismic direct modeling of solar mass flows

2:00 - 3:30pm: Medium- and High-Degree Helioseismology

Tim Larson: HMI global helioseismology pipeline
M. Cristina Rabello-Soares: Frequency dependence of the solar-cycle frequency variation
Edward Rhodes:

Recent progress in the fitting of m-averaged power spectra.
Temporal changes in the frequencies, widths, amplitudes, and asymmetriс of the p-mode oscillations during Solar Cycle 23;
Current status of MWO 60-Foot Tower internal flow study

4:00 - 6:00 pm: Systematic uncertainties in sunspot seismology

Douglas Braun: Sunspot seismology with synthetic data, Part I
Aaron Birch: Sunspot seismology with synthetic data, Part II
Junwei Zhao: Validating time-distance subsurface sound-speed structure inversions
Alexander Kosovichev: Comparison of ring-diagram and time-distance helioseismology results

Wednesday, August 4

9:00am - 12:30pm: Numerical Simulations

Thomas Hartlep: Full-Sun wave propagation simulations for testing helioseismology
Konstantin Parchevsky: Propagation of MHD waves in sunspot models with flows
Vyacheslav Olshevsky: Local helioseismology of sunspots. Comparison of theory (simulations) and observations
Irina Kitiashvili: Dynamics and oscillations in regions of inclined magnetic field
Walter W. Allen Jr.: Waves in supergranulation

2:00-4:00pm: LWS TR&T session on emerging active regions

Robert Stein: Flux emergence simulations
Mark Cheung: Simulations of emerging flux and sunspots
Irina Kitiashvili: Spontaneous formation of magnetic structures on the Sun
Stathis Ilonidis: Searching subsurface signatures of emerging active regions
Aaron Birch: Helioseismic observations of emerging flux

4:30-6:00pm: Round-table discussion on LoHCo activities, intercomparisons,
common datasets for testing, artificial data sharing, etc.

Thursday, August 5

9:00am - 12:30pm: HMI data processing, links to magnetic field measurements

Jesper Schou: HMI operations, sequences etc.
Art Amezcua: HMI JSOC DRMS tutorial
Sebastien Couvidat: HMI Doppler and other lev1.5 calibrations
Todd Hoeksema: HMI magnetic field pipeline

2:00-3:30pm: Invited lecture

Jon Claerbout: Image estimation in seismology

4:00-6:00pm: Working session on HMI data analysis.I

Friday, August 6

9:00am - 12:30pm: Invited lecture

Douglas Gough: Magnetic effects

2:00-4:00pm: Working session on HMI data analysis.II

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