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Magnetosphere Seminars – Spring 2010

Magnetosphere Seminars

Illustration of Sun-Earth connection. When CME's blast through the Sun's outer atmosphere and plow toward Earth at speeds of thousands of miles per second, the resulting effects can be harmful to communication satellites and astronauts outside the Earth's magnetosphere. On the ground, the magnetic storm wrought by these solar particles can knock out electric power. (Courtesy Steele Hill/NASA)

Below is a schedule of the informal LASP Magnetospheres Seminars for the Spring Semester 2010. Except where noted, seminars will be held on Tuesday afternoons in room LSTB-206 at 3:30 pm.

LASP holds a series of informal seminars focused on space physics and plasma research relating to the magnetospheres of Earth and other planets. The intended audience is space and planetary physics researchers in the Boulder area, although in most instances any interested persons are welcome to attend.

For more information or if you have questions, please contact:

Stefan Eriksson at (email: firstname.lastname@lasp.colorado.edu)



Spring Semester 2010 Schedule:

January 12, 2010

Effects of ionospheric oxygen outflow on magnetospheric configuration

  Speaker: Michael Wiltberger  (HAO)
Time: 4:00-5:00 p.m., refreshments served at 3:45 p.m.
Location: LSTB-206
Abstract:  
January 19, 2010

First Hall field observation at a solar wind reconnection exhaust

  Speaker: Stefan Eriksson (LASP)
Time: 4:00-5:00 p.m., refreshments served at 3:45 p.m.
Location: LSTB-206
Abstract:

 

February 2, 2010

Dual reversed convection and magnetospheric reconfiguration under strongly northward IMF

  Speaker: Gang Lu (HAO)
Time: 4:00-5:00 p.m., refreshments served at 3:45 p.m.
Location: LSTB-206
Abstract:

February 9, 2010

CU’s CubeSat mission: Solar energetic particles and outer radiation belt electrons

  Speaker: Xinlin Li (LASP)
Time: 4:00-5:00 p.m., refreshments served at 3:45 p.m.
Location: LSTB-206
Abstract:

February 16, 2010

The east-west effect in GOES solar proton flux measurements

  Speaker: Juan Rodriguez (NOAA)
Time: 4:00-5:00 p.m., refreshments served at 3:45 p.m.
Location: LSTB-206
Abstract:

February 23, 2010

Seasonal and IMF dependent nightside polar cap contraction during substorm expansion phase

  Speaker: Karl Laundal (University of Bergen)
Time: 4:00-5:00 p.m., refreshments served at 3:45 p.m.
Location: LSTB-206
Abstract:

March 2, 2010

Magnetosphere-satellite interactions at Io, Europa and Enceladus:
Why bother to make measurements when we can just make models!

  Speaker: Fran Bagenal (LASP)
Time: 4:00-5:00 p.m., refreshments served at 3:45 p.m.
Location: LSTB-206
Abstract:

March 9, 2010

THEMIS multi-spacecraft observations of a crater FTE exhibiting distinct plasma flows and an abnormal compression of plasma density

  Speaker: Drew Turner (LASP)
Time: 4:00-5:00 p.m., refreshments served at 3:45 p.m.
Location: LSTB-206
Abstract:

March 23, 2010

*** SPRING BREAK — NO SEMINAR ***

  Speaker: No Seminar
Time: 4:00-5:00 p.m., refreshments served at 3:45 p.m.
Location: LSTB-206
Abstract:

No Seminar

March 30, 2010

Auroral inputs over 30 years, in solar minimum, and in the TIEGCM

  Speaker: Barbara Emery (HAO)
Time: 4:00-5:00 p.m., refreshments served at 3:45 p.m.
Location: LSTB-206
Abstract:

We assess the contribution of solar forcing from the interplanetary magnetic field (IMF) Bt and solar wind velocity (Vsw) on the auroral inputs from intercalibrated NOAA and DMSP satellite-track in-situ particle measurements. We compare the NOAA/DMSP to GUVI global electron power (Pe) variations with geophysical indices. Periodicities in Vsw, Bt, Pe, and ion power (Pi) are calculated using Lomb-Scargle (L-S) and wavelet analyses. We examine several different solar minimum periods. The first Whole Sun Month (WSM) interval (96223-96252) had a strong solar magnetic dipole. Strong ‘semiannual’ equinoctial periodicities of ~20% variation in Vsw and 40% variation in Pe were found. In the present solar minimum, the solar magnetic field is weaker with larger quadrupole components during the Whole Heliospheric Interval (WHI, 08080-08107). Strong 9-d amplitudes of ~30% variation in Vsw and ~40% variation in Pe and Pi were found. This 9-d periodicity was also found in the IMF Bt, in the CHAMP neutral density at 400 km, and in the outer radiation belt electrons >2 MeV in 2008. In 2009, the 9-d periodicity disappeared and the 13.5-d periodicity was strongest. Minimum values of 81-day Pe and Bt values were found between 09016 and 09098, while Pi minimums were on either side, Vsw minimums occurred between 09150-09162, and Kp minimums were latest between 09213-09293. We use GUVI images to determine the electron auroral inputs in the TIEGCM model as a function of MLT, Kp, and season.

April 6, 2010

A case study of radiation belt electron dynamics — quantification of source, loss and transport

  Speaker: Weichao Tu (LASP)
Time: 4:00-5:00 p.m., refreshments served at 3:45 p.m.
Location: LSTB-206
Abstract:

April 13, 2010

Using a global magnetohydrodynamic model to determine the start of the substorm recovery phase

  Speaker: Nathan Farr (LASP)
Time: 4:00-5:00 p.m., refreshments served at 3:45 p.m.
Location: LSTB-206
Abstract:

April 20, 2010

Adiabatic scaling of GOES electrons

  Speaker: Jennifer Gannon (USGS)
Time: 4:00-5:00 p.m., refreshments served at 3:45 p.m.
Location: LSTB-206
Abstract:

April 27, 2010

Modeling Saturn’s water-based Enceladus torus

  Speaker: Bobby Fleshman (LASP/OU)
Time: 4:00-5:00 p.m., refreshments served at 3:45 p.m.
Location: LSTB-206
Abstract:

May 4, 2010

*** CU FINAL EXAMS — NO SEMINAR ***

  Speaker: N/A
Time: 4:00-5:00 p.m., refreshments served at 3:45 p.m.
Location: LSTB-206
Abstract:

May 11, 2010

EMIC waves, geomagnetic storms and plasma plumes

  Speaker: Brian Fraser (University of Newcastle)
Time: 4:00-5:00 p.m., refreshments served at 3:45 p.m.
Location: LSTB-206
Abstract:

May 18, 2010

 

  Speaker: Vincent Dols (LASP)
Time: 4:00-5:00 p.m., refreshments served at 3:45 p.m.
Location: LSTB-206
Abstract:

May 25, 2010

 

  Speaker: Delores Knipp (HAO)
Time: 4:00-5:00 p.m., refreshments served at 3:45 p.m.
Location: LSTB-206
Abstract:

Previous Seminars