Repositorio Digital del IGP

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  • Woodman, Ronald F.; Chau, Jorge L. (Instituto Geofísico del Perú, 2005-12-24)
    "We present the first daytime E and D region incoherent scatter radar (ISR) measurements of electron densities at equatorial latitudes, using the Jicamarca ISR. Both measurements have been obtained using a high-resolution ...
  • Cabezas, Denis P.; Martínez, Lurdes M.; Buleje, Yovanny J.; Ishitsuka, Mutsumi; Ishitsuka, José K.; Morita, Satoshi; Asai, Ayumi; Ueno, Satoru; Ishii, Takato T.; Kitai, Reizaburo (Instituto Geofísico del Perú, 2017-01)
    "Coronal disturbances associated with solar flares, such as Hα Moreton waves, X-ray waves, and extreme ultraviolet (EUV) coronal waves, are discussed herein in relation to magnetohydrodynamic fast-mode waves or shocks in ...
  • Hysell, D. L.; Milla, M. A. (Instituto Geofísico del Perú, 2014-08)
    "Ionospheric state parameters including plasma number density and vector drift profiles were measured at the Jicamarca Radio Observatory during campaigns throughout 2013. Neutral winds were measured by the redline Fabry ...
  • Condori, L.; Vierinen, J.; Hysell, D. L.; Milla, M. A. (Instituto Geofísico del Perú, 2015-11-19)
    "We present results from a continuing effort to simulate equatorial spread F (ESF) using observations from the Jicamarca Radio Observatory near Lima, Peru. Jicamarca measures vertical and zonal plasma drifts along with ...
  • Hysell, D. L.; Milla, M. A.; Condori, L.; Meriwether, J. W. (Journal of Geophysical Research: Space Physics, 2014-08-11)
    "An ongoing effort to simulate plasma instability in the equatorial ionosphere leading to equatorial spread F (ESF) in the American sector is described. Ionospheric state parameters including plasma number density and ...
  • Oppenheim, Meers M.; Sugar, Glenn; Bass, Elizabeth; Dimant, Yakov S.; Chau, Jorge (Instituto Geofísico del Perú, 2008-02-06)
    "A recent theory of meteor trail plasma diffusion made the prediction that meteors will generate more and longer lasting non‐specular echoes at night than during the day. This letter presents the first evidence of a dramatic ...
  • Milla, M.; Rodrigues, F. S.; Smith, J. M.; Stoneback, R. A. (Instituto Geofísico del Perú, 2015-01-13)
    "One of the most interesting observations made by the Communication/Navigation Outage Forecasting System (C/NOFS) satellite mission was the detection of average equatorial ionospheric vertical drifts that largely differed ...
  • Hui, Debrup; Fejer, Bela G. (Journal of Geophysical Research: Space Physics, 2015-10-19)
    "We have used extensive radar measurements from the Jicamarca Observatory during low solar flux periods to study the quiet time variability and altitudinal dependence of equatorial daytime vertical and zonal plasma drifts. ...
  • Chau, Jorge L.; Woodman, Ronald F.; Scipión, Danny E. (Instituto Geofísico del Perú, Radio Observatorio de Jicamarca, 2004-06-27)
    Doppler velocities of 150-km echoes represents the vertical ExB drift velocities at F region altitudes. 150-km observations represent and excelent mean of monitoring the electric fields at equatorial latitudes. Low power ...
  • Chau, Jorge L.; Woodman, Ronald F. (Geophysical Research Letters, 2004-09-02)
    "As it was suggested by Kudeki and Fawcett [1993], and later shown by Woodman and Villanueva [1995], vertical Doppler velocities of daytime 150‐km echoes represent the vertical E × B drift velocities at F region altitudes. ...
  • Anderson, David; Anghel, Adela; Chau, Jorge; Veliz, Oscar (Instituto Geofísico del Perú, 2004-11)
    "The daytime equatorial electrojet is a narrow band of enhanced eastward current flowing in the 100–120 km altitude region within ±2° latitude of the dip equator. A unique way of determining the daytime strength of the ...
  • Pavan Chaitanya, P.; Patra, A. K.; Otsuka, Y.; Yokoyama, T.; Yamamoto, M.; Stoneback, R. A.; Heelis, R. A. (Journal of Geophysical Research: Space Physics, 2017-08-16)
    "Multibeam observations of the 150 km echoes made using the Equatorial Atmosphere Radar (EAR), located at Kototabang, Indonesia, provide unique opportunity to study both vertical and zonal E × B plasma drifts in the ...
  • Norabuena, Edmundo O.; Dixon, Timothy H.; Stein, Seth; Harrison, Christopher G. A. (Instituto Geofísico del Perú, 1999-11-15)
    "Space geodetic estimates of the rate of Nazca-South America convergence and Nazca-Pacific spreading averaging over several years show that present day rates are significantly slower than the 3 million year average NUVEL-1A ...
  • Ayes Rivera, Irma; Armijos Cardenas, Elisa; Raúl Espinoza, Villar; Espinoza, Jhan Carlo; Molina-Carpio, Jorge; Max Ayala, José; Gutierrez-Cori, Omar; Martinez, Jean-Michel; Filizola, Naziano (MDPI, 2019-03-12)
    "The Madeira River is the second largest Amazon tributary, contributing up to 50% of the Amazon River’s sediment load. The Madeira has significant hydropower potential, which has started to be used by the Madeira Hydroelectric ...
  • Breiburg, Denis; Levin, Lisa A.; Oschlies, Andreas; Grégoire, Marilaure; Chavez, Francisco P.; Conley, Daniel J.; Garçon, Véronique; Gilbert, Denis; Gutiérrez, Dimitri; Isensee, Kirsten; Jacinto, Gil S.; Limburg, Karin E.; Montes, Yvonne; Naqvi, S. W. A.; Pitcher, Grant C.; Rabalais, Nancy N.; Roman, Michael R.; Rose, Kenneth A.; Seibel, Brad A.; Telszewski, Maciej; Yasuhara, Moriaki; Zhang, Jing (Instituto Geofísico del Perú, 2018-01)
    "Oxygen is fundamental to life. Not only is it essential for the survival of individual animals, but it regulates global cycles of major nutrients and carbon. The oxygen content of the open ocean and coastal waters has ...
  • Woodman, R.F. (Instituto Geofísico del Perú, 1981)
    Different coding schemes, their advantages, and the need for the use of pbase coded pulses is discussed by Farley (page 410, this volume). Here we shall limit ourselves to describe decoding techniques and equipment which ...
  • Sulzer, M.P.; Woodman, R.F. (1984)
    MST radar vary considerably from one installation to the next in the type of hardware, operating schedule, associated personnel, and amount of funding. Most such systems do not have the computing power to decode in software ...
  • Pucci, Stefano; Civico, Riccardo; Villani, Fabio; Ricci, Tullio; Delcher, Eric; Finizola, Anthony; Sapia, Vincenzo; De Martini, Paolo Marco; Pantosti, Daniela; Barde-Cabusson, Stéphanie; Brothelande, Elodie; Gusset, Rachel; Mezon, Cécile; Orefice, Simone; Peltier, Aline; Poret, Matthieu; Torres, Liliana; Suski, Barbara (Instituto Geofísico del Perú, 2016-08-15)
    "Three 2-D Deep Electrical Resistivity Tomography (ERT) transects, up to 6.36 km long, were obtained across the Paganica-San Demetrio Basin, bounded by the 2009 L'Aquila Mw 6.1 normal-faulting earthquake causative fault ...
  • Jay, Jennifer A.; Delgado, Francisco J.; Torres, José Luis; Pritchard, Matthew E.; Macedo, Orlando; Aguilar, Víctor (Instituto Geofísico del Perú, 2015-03-19)
    "We use interferometric synthetic aperture radar (InSAR) and local seismic data to investigate the cause of earthquake sequences near Sabancaya volcano in southern Peru from 2002 to 2014, with a particular focus on events ...
  • Ragaini, Enrico; Woodman, Ronald F. (Instituto Geofísico del Perú, 1997-03)
    "This paper proposes a technique for processing signals in which the relevant spectral feature consists of one or more narrow lines which have a nonzero Doppler shift with respect to the reference frequency. The proposed ...

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