[en] A statistical comparison of the latitude of the open/closed magnetic field line boundary (OCB) as estimated from the three far ultraviolet (FUV) detectors onboard the IMAGE spacecraft (the Wideband Imaging camera, WIC, and the Spectrographic Imagers, SI-12 and SI-13) has been carried out over all magnetic local times. A total of over 400 000 OCB estimations were compared from December 2000 and January and December of 2001 2002. The modal latitude difference between the FUV OCB proxies from the three detectors is small, <1°, except in the predawn and evening sectors, where the SI-12 OCB proxy is found to be displaced from both the SI-13 and WIC OCB proxies by up to 2° poleward in the predawn sector and by up to 2° equatorward in the evening sector. Comparing the IMAGE FUV OCB proxies with that determined from particle precipitation measurements by the Defense Meteorological Satellites Program (DMSP) also shows systematic differences. The SI-12 OCB proxy is found to be at higher latitude in the predawn sector, in better agreement with the DMSP OCB proxy. The WIC and SI-13 OCB proxies are found to be in better agreement with the DMSP OCB proxy at most other magnetic local times. These systematic offsets may be used to correct FUV OCB proxies to give a more accurate estimate of the OCB latitude.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Boakes, P. D.; Department of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UK ; British Antarctic Survey, Natural Environment Council, Cambridge, UK
Milan, S. E.; Department of Physics and Astronomy, University of Leicester, Leicester, LE1 7RH, UK
Abel, G. A.; British Antarctic Survey, Natural Environment Council, Cambridge, UK
Freeman, M. P.; British Antarctic Survey, Natural Environment Council, Cambridge, UK
Chisham, G.; British Antarctic Survey, Natural Environment Council, Cambridge, UK
Hubert, Benoît ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Labo de physique atmosphérique et planétaire (LPAP)
scite shows how a scientific paper has been cited by providing the context of the citation, a classification describing whether it supports, mentions, or contrasts the cited claim, and a label indicating in which section the citation was made.
Bibliography
Baker, J. B., Clauer, C. R., Ridley, A. J., Papitashvili, V. O., Brittnacher, M. J., and Newell, P. T.: The nightside poleward boundary of the auroral oval as seen by DMSP and the Ultraviolet Imager, J. Geophys. Res., 105, 21 267-21 280, 2000.
Baker, K. B., Dudeney, J. R., Greenwald, R. A., Pinnock, M., Newell, P. T., Rodger, A. S., Mattin, N., and Meng, C. I.: Hf Radar Signatures of the Cusp and Low-Latitude Boundary-Layer, J. Geophys. Res., 100, 7671-7695, 1995.
Blanchard, G. T., Ellington, C. L., Lyons, L. R., and Rich, F. J.: Incoherent scatter radar identification of the dayside magnetic separatrix and measurement of magnetic reconnection, J. Geophys. Res., 106, 8185-8195, 2001.
Blanchard, G. T., Lyons, L. R., de la Beaujardiere, O., Doe, R. A., and Mendillo, M.: Measurement of the magnetotail reconnection rate, J. Geophys. Res., 101, 15 265-15 276, 1996.
Blanchard, G. T., Lyons, L. R., and Samson, J. C.: Accuracy of using 6300 angstrom auroral emission to identify the magnetic separatrix on the nightside of earth, J. Geophys. Res., 102, 9697-9703, 1997.
Blanchard, G. T., Lyons, L. R., Samson, J. C., and Rich, F. J.: Locating the Polar-Cap Boundary from Observations of 6300 Angstrom Auroral Emission, J. Geophys. Res., 100, 7855-7862, 1995.
Brittnacher, M., Fillingim, M., Parks, G., Germany, G., and Spann, J.: Polar cap area and boundary motion during substorms, J. Geophys. Res., 104, 12 251-12 262, 1999.
Carbary, J. F., Sotirelis, T., Newell, P. T., and Meng, C. I.: Auroral boundary correlations between UVI and DMSP, J. Geophys. Res., 108, 1018, doi:10.1029/2002JA009378, 2003.
Chisham, G., Freeman, M. P., Abel, G. A., Lam, M. M., Pinnock, M., Coleman, I. J., Milan, S. E., Lester, M., Bristow, W. A., Greenwald, R. A., Sofko, G. J., and Villain, J.-P.: Remote sensing of the spatial and temporal structure of magnetopause and magnetotail reconnection from the ionosphere, Rev. Geophys., 46, RG1004, doi:10.1029/2007RG000223, 2008.
Chisham, G. and Freeman, M. P.: A technique for accurately determining the cusp-region polar cap boundary using SuperDARN HF radar measurements, Ann. Geophys., 21, 983-996, 2003.
Chisham, G., Freeman, M. P., Sotirelis, T., Greenwald, R. A., Lester, M., and Villain, J. P.: A statistical comparison of SuperDARN spectral width boundaries and DMSP particle precipitation boundaries in the morning sector ionosphere, Ann. Geophys., 23, 733-743, 2005.
Chisham, G., Lester, M., Milan, S. E., Freeman, M. P., Bristow, W. A., Grocott, A., McWilliams, K. A., Ruohoniemi, J. M., Yeoman, T. K., Dyson, P. L., Greenwald, R. A., Kikuchi, T., Pinnock, M., Rash, J. P. S., Sato, N., Sofko, G. J., Villain, J. P., and Walker, A. D. M.: A decade of the Super Dual Auroral Radar Network (SuperDARN): scientific achievements, new techniques and future directions, Surv. Geophys., 28, 33-109, 2007.
Chisham, G., Pinnock, M., Coleman, I. J., Hairston, M. R., and Walker, A. D. M.: An unusual geometry of the ionospheric signature of the cusp: implications for magnetopause merging sites, Ann. Geophys., 20, 29-40, 2002.
Chisham, G., Pinnock, M., and Rodger, A. S.: The response of the HF radar spectral width boundary to a switch in the IMF B-y direction: Ionospheric consequences of transient dayside reconnection?, J. Geophys. Res., 106, 191-202, 2001.
Cran-McGreehin, A. P. and Wright, A. N.: Electron acceleration in downward auroral field-aligned currents, J. Geophys. Res.-Space Phys., 110, A10S15, doi:10.1029/2004JA010898, 2005.
Elphinstone, R. D., Murphree, J. S., and Cogger, L. L.: What is a global auroral substorm?, Rev. Geophys., 34, 169-232, 1996.
Hubert, B., Milan, S. E., Grocott, A., Blockx, C., Cowley, S. W. H., and Gerard, J. C.: Dayside and nightside reconnection rates inferred from IMAGE FUV and Super Dual Auroral Radar Network data, J. Geophys. Res., 111, A03217, doi:10.1029/2005JA011140, 2006.
Iijima, T. and Potemra, T. A.: Large-Scale Characteristics of Field-Aligned Currents Associated with Substorms, J. Geophys. Res.-Space Phys., 83, 599-615, 1978.
Kauristie, K., Weygand, J., Pulkkinen, T. I., Murphree, J. S., and Newell, P. T.: Size of the auroral oval: UV ovals and precipitation boundaries compared, J. Geophys. Res., 104, 2321-2331, 1999.
Lam, M. M., Pinnock, M., and Donovan, E. F.: Observations of nightside magnetic reconnection during substorm growth and expansion phases, J. Geophys. Res., 111, A05209, doi:10.1029/2005JA011356, 2006.
Lester, M., Milan, S. E., Besser, V., and Smith, R.: A case study of HF radar spectra and 630.0 nm auroral emission in the pre-midnight sector, Ann. Geophys., 19, 327-339, 2001.
Mende, S. B., Frey, H. U., Morsony, B. J., and Immel, T. J.: Statistical behavior of proton and electron auroras during substorms, J. Geophys. Res.-Space Phys., 108, 1339, doi:10.1029/2002JA009751, 2003.
Mende, S. B., Heetderks, H., Frey, H. U., Lampton, M., Geller, S. P., Abiad, R., Siegmund, O. H. W., Tremsin, A. S., Spann, J., Dougani, H., Fuselier, S. A., Magoncelli, A. L., Bumala, M. B., Murphree, S., and Trondsen, T.: Far ultraviolet imaging from the IMAGE spacecraft. 2. Wideband FUV imaging, Space Sci. Rev., 91, 271-285, 2000a.
Mende, S. B., Heetderks, H., Frey, H. U., Stock, J. M., Lampton, M., Geller, S. P., Abiad, R., Siegmund, O. H. W., Habraken, S., Renotte, E., Jamar, C., Rochus, P., Gerard, J. C., Sigler, R., and Lauche, H.: Far ultraviolet imaging from the IMAGE spacecraft. 3. Spectral imaging of Lyman-alpha and OI 135.6 nm, Space Sci. Rev., 91, 287-318, 2000b.
Milan, S. E., Lester, M., Cowley, S. W. H., Moen, J., Sandholt, P. E., and Owen, C. J.: Meridian-scanning photometer, coherent HF radar, and magnetometer observations of the cusp: a case study, Ann. Geophys., 17, 159-172, 1999.
Milan, S. E., Lester, M., Cowley, S. W. H., Oksavik, K., Brittnacher, M., Greenwald, R. A., Sofko, G., and Villain, J. P.: Variations in the polar cap area during two substorm cycles, Ann. Geophys., 21, 1121-1140, 2003.
Newell, P. T., Burke, W. J., Sanchez, E. R., Meng, C. I., Greenspan, M. E., and Clauer, C. R.: The Low-Latitude Boundary-Layer and the Boundary Plasma Sheet at Low Altitude - Prenoon Precipitation Regions and Convection Reversal Boundaries, J. Geophys. Res., 96, 21 013-21 023, 1991.
Sandholt, P. E., Farrugia, C. J., Oieroset, M., Stauning, P., and Denig, W. F.: Auroral activity associated with unsteady magnetospheric erosion: Observations on December 18, 1990, J. Geophys. Res., 103, 2309-2317, 1998.
Sotirelis, T. and Newell, P. T.: Boundary-oriented electron precipitation model, J. Geophys. Res., 105, 18 655-18 673, 2000.
Weimer, D. R.: Maps of ionospheric field-aligned currents as a function of the interplanetary magnetic field derived from Dynamics Explorer 2 data, J. Geophys. Res.-Space Phys., 106, 12 889-12 902, 2001.
Wild, J. A., Milan, S. E., Owen, C. J., Bosqued, J. M., Lester, M., Wright, D. M., Frey, H., Carlson, C. W., Fazakerley, A. N., and Reme, H.: The location of the open-closed magnetic field line boundary in the dawn sector auroral ionosphere, Ann. Geophys., 22, 3625-3639, 2004.
Similar publications
Sorry the service is unavailable at the moment. Please try again later.
This website uses cookies to improve user experience. Read more
Save & Close
Accept all
Decline all
Show detailsHide details
Cookie declaration
About cookies
Strictly necessary
Performance
Strictly necessary cookies allow core website functionality such as user login and account management. The website cannot be used properly without strictly necessary cookies.
This cookie is used by Cookie-Script.com service to remember visitor cookie consent preferences. It is necessary for Cookie-Script.com cookie banner to work properly.
Performance cookies are used to see how visitors use the website, eg. analytics cookies. Those cookies cannot be used to directly identify a certain visitor.
Used to store the attribution information, the referrer initially used to visit the website
Cookies are small text files that are placed on your computer by websites that you visit. Websites use cookies to help users navigate efficiently and perform certain functions. Cookies that are required for the website to operate properly are allowed to be set without your permission. All other cookies need to be approved before they can be set in the browser.
You can change your consent to cookie usage at any time on our Privacy Policy page.
