Repositorio Digital del IGP

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  • Calderón, C; Fejer, B. G.; Farley, D. T.; Gonzales, C. A.; Woodman, R. F. (Instituto Geofísico del Perú, 1981-01-01)
    "F region east-west drifts have been measured at Jicamarca for almost 10 years, using incoherent scatter. The drifts are westward during the day and eastward at night. The daytime drift velocities are about 50 m/s and ...
  • Feng, Zhaomei; Kudeki, Erhan; Woodman, Ronald F.; Chau, Jorge; Milla, Marco (Instituto Geofísico del Perú, 2004-06-16)
    "The differential‐phase method for Jicamarca F region density measurements has been modified to fit the real and imaginary components of the cross‐correlation of orthogonally polarized radar returns. The original method ...
  • Woodman, R.F.; Veliz, O.; Sarango A., M.; Aquino Q., F.; Villanueva R., F. (Instituto Geofísico del Perú, Radio Observatorio de Jicamarca, 1994-11-03)
    On November 3, 1994, a total solar eclipse occurred at about 7:10 a.m. local time, with a maximum occultation path tangent to the southern coast of Peru. Occultation was not total at Jicamarca; it was 95%. The maximum ...
  • Woodman, R.F.; Calderon, C. (1976)
    Equatorial electric field measurements were recently reviewed by B. Balsley on occasion of the last equatorial symposium. We present in this review new measurements reported in the literature since the last symposium and ...
  • Milla, Marco A.; Kudeki, Erhan (Instituto Geofísico del Perú, 2006-07)
    "The ALTAIR UHF radar was used in an incoherent scatter experiment to observe the low-latitude ionosphere during the Equis 2 rocket campaign. The measurements provided the first high-resolution electron density maps of the ...
  • Kudeki, Erhan; Zengingul, Pinar; Farley, Donald T.; Swartz, Wesley E.; Woodman, Ronald F. (1988-10)
    F-region radar backscatter measurements were conducted at Jicamarca during October 10-14, 1988, in conjunction with simultaneous scintillation and airglow measurements and scheduled passes of the equatorial orbit San Marco ...
  • Balan, N.; Thampi, S. V.; Lynn, K.; Otsuka, Y.; Alleyne, H.; Watanabe, S.; Abdu, M. A.; Fejer, B. G. (Journal of Geophysical Research: Space Physics, 2008-09-04)
    "The occurrence of an additional layer, called F3 layer, in the equatorial ionosphere at American, Indian, and Australian longitudes during the super double geomagnetic storm of 7–11 November 2004 is presented using ...
  • Woodman Pollitt, Ronald (1997-11)
    El contenido del presente artículo está basado en una conferencia presentada en El Congreso por invitación de la Dra. Martha Hildebrant, una de varias correspondientes al "Ciclo de Conferencias de la Primera Legislatura ...
  • Sato, Toru; Woodman, Ronald F. (Instituto Geofísico del Perú, 1982-07-26)
    "Preliminary results of wind velocity measurements made using the Arecíbo 430 MHz radar are presented. These measurements were made in the altitude range between 10 and 30 km, with a time resolution of 1-2 min, and an ...
  • Hysell, D. L.; Nossa, E.; Aveiro, H. C.; Larsen, M. F.; Munro, J.; Sulzer, M. P.; González, S. A. (Journal of Atmospheric and Solar-Terrestrial Physics, 2013-01-03)
    "Fine structure in midlatitude sporadic E layer patches or “clouds” is apparent in incoherent scatter observations from the Arecibo Radio Telescope. The fine structure is wavelike with predominant horizontal wavelengths ...
  • Balsley, Ben B.; Lawrence, Dale A.; Woodman, Ronald F.; Fritts, David C. (Instituto Geofísico del Perú, 2012-10-12)
    "We report results of preliminary high-resolution in situ atmospheric measurements through the boundary layer and lower atmosphere over the southern coast of Perú. This region of the coast is of particular interest because ...
  • Oppenheim, Meers M.; Dimant, Yakov S. (Geophysical Research Letters, 2015-01-11)
    "Millions of small but detectable meteors hit the Earth's atmosphere every second, creating trails of hot plasma that turbulently diffuse into the background atmosphere. For over 60 years, radars have detected meteor plasmas ...
  • Chau, Jorge L.; Galindo, Freddy (Instituto Geofísico del Perú, 2008-03)
    "We present the first clear observations of meteor shower activity from meteor-head echoes detected by a high-power large-aperture radar (HPLAR). Such observations have been performed at the Jicamarca VHF radar using its ...
  • Astafyeva, Elvira; Zakharenkova, Irina (Geophysical Research Letters, 2015-11-04)
    "We present the first observations of the supersonic updrafting plasma drifts in the predawn sector. Two DMSP satellites quasi‐simultaneously detected two fast‐speed events: one of ~385 km spatial extension and with the ...
  • Chau, J. L.; Kudeki, E. (Instituto Geofísico del Perú, 2006-07)
    "We present here the first Jicamarca observations of incoherent scatter radar (ISR) spectra detected from E- and D-region altitudes. In the past such observations have not been possible at Jicamarca due a combined effect ...
  • Wang, H.; Akmaev, R. A.; Fang, T. W.; Fuller-Rowell, T. J.; Wu, F.; Maruyama, N.; Iredell, M. D. (Journal of Geophysical Research: Space Physics, 2014-03-10)
    "We present the first “weather forecast” with a coupled whole‐atmosphere/ionosphere model of Integrated Dynamics in Earth's Atmosphere (IDEA) for the January 2009 Sudden Stratospheric Warming (SSW). IDEA consists of the ...
  • Woodman, Ronald F.; Chau, Jorge L. (Instituto Geofísico del Perú, 2002-12-27)
    "We report the first Jicamarca Radio Observatory (JRO) observations of two-stream irregularities under daytime counter equatorial electrojet (CEEJ) conditions, made with a VHF radar. This type of irregularity, although ...
  • Guo, L.; Lehmacher, G. (Instituto Geofísico del Perú, 2009-06)
    "Tidal oscillations in the equatorial mesosphere and lower thermosphere (MLT) region over Jicamarca (11.95° S, 76.87° W) are studied using the observations from the newly installed Jicamarca All-sky Specular MEteor Radar ...
  • Maekawa, Yasuyuki; Fukao, Shoichiro; Yamamoto, Mamoru; Yamanaka, Manabu D.; Tsuda, Toshitaka; Kato, Susumu; Woodman, Ronald F. (Instituto Geofísico del Perú, 1993-10)
    "The Jicamarca VHF radar (50 MHz) has detected atmospheric echoes in the so-called "gap region" from 30 to 60 km heights. These echoes are, for the first time, discriminated from clutter echoes, using both co-polarized ( ...
  • Woodman, Ronald F.; Balsley, Ben B.; Aquino, Freddy; Flores, Luis; Vazquez, Edilberto; Sarango, Martín (1995)
    A 50 Mhz radar, with 25 kW average power, has been installed at the Peruvian base in St. George lsland, Antarcitc. A search far PMSE echoes were made during its first year of operatlon, with negative results. These resutts ...

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