July 29, 2977 magnetic storm: observations and modeling of energetic particles at synchronous orbit

PDF Version Also Available for Download.

Description

A brief description of the energetic particle studies carried out by Subgroup 6 of CDAW-2 is presented. Instrumentation onboard six spacecraft at (or near) geostationary orbit was used in the analysis. Timing of particle injection during the last, and largest, substorm on July 29, 1977 (approx. 1200 UT) was investigated, as was the particle phase space density variation associated with this event. Energetic proton gradient anisotropies were also used to examine large-scale magnetospheric boundary motions. Finally, adiabatic modeling calculations were performed for the substorm event period, including effects of injection, convection, corotation, and particle drifts. We find substantial evidence to ... continued below

Physical Description

Pages: 17

Creation Information

Baker, D.N.; Fritz, T.A. & Wilken, B. January 1, 1981.

Context

This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

Who

People and organizations associated with either the creation of this article or its content.

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

Contact Us

What

Descriptive information to help identify this article. Follow the links below to find similar items on the Digital Library.

Description

A brief description of the energetic particle studies carried out by Subgroup 6 of CDAW-2 is presented. Instrumentation onboard six spacecraft at (or near) geostationary orbit was used in the analysis. Timing of particle injection during the last, and largest, substorm on July 29, 1977 (approx. 1200 UT) was investigated, as was the particle phase space density variation associated with this event. Energetic proton gradient anisotropies were also used to examine large-scale magnetospheric boundary motions. Finally, adiabatic modeling calculations were performed for the substorm event period, including effects of injection, convection, corotation, and particle drifts. We find substantial evidence to suggest storage of solar wind-derived energy in the magnetotail prior to the substorm and we find this stored energy to be suddenly released at substorm expansion onset. We also find particles at geostationary orbit to be newly accelerated during the substorm to energies greater than or equal to 1 MeV (..mu.. greater than or equal to 100 MeV/G) and modeling shows that these particles could have been convected (and injected) from beyond 10 R/sub E/ in the nightside magnetosphere.

Physical Description

Pages: 17

Notes

NTIS, PC A02/MF A01.

Source

  • IMS Assessment symposium, Greenbelt, MD, USA, 21 May 1981

Language

Item Type

Identifier

Unique identifying numbers for this article in the Digital Library or other systems.

  • Other: DE82008127
  • Report No.: LA-UR-82-325
  • Report No.: CONF-810585-2
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5384205
  • Archival Resource Key: ark:/67531/metadc1065754

Collections

This article is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

What responsibilities do I have when using this article?

When

Dates and time periods associated with this article.

Creation Date

  • January 1, 1981

Added to The UNT Digital Library

  • Feb. 4, 2018, 10:51 a.m.

Description Last Updated

  • May 30, 2018, 11:48 a.m.

Usage Statistics

When was this article last used?

Congratulations! It looks like you are the first person to view this item online.

Interact With This Article

Here are some suggestions for what to do next.

Start Reading

PDF Version Also Available for Download.

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Baker, D.N.; Fritz, T.A. & Wilken, B. July 29, 2977 magnetic storm: observations and modeling of energetic particles at synchronous orbit, article, January 1, 1981; New Mexico. (digital.library.unt.edu/ark:/67531/metadc1065754/: accessed August 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.