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  Por | Comisión Multisectorial encargada del Estudio Nacional del Fenómeno El Niño (ENFEN) (Comisión Multisectorial encargada del Estudio Nacional del Fenómeno El Niño (ENFEN), 2021-02-12)

  Comunicado Oficial ENFEN N°02-2021 

  La Comisión Multisectorial del ENFEN mantiene el estado del “Sistema de alerta ante El Niño y La Niña Costeros” como “No activo”, debido a que la temperatura superficial del mar en la región Niño 1+2, que incluye la zona norte y centro del mar peruano, se mantendría dentro de su rango normal al menos ...

  Palabras claves:
  • Fenómeno El Niño
  • Temperatura del mar
  • Sistemas de alerta

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  Por | Sánchez-Núñez, J. M.; Gómez Avalos, Juan Carlos; Macías, J. L.; Arce, J. L. (Elsevier, 2020-12)

  Pleistocene rock avalanche, damming, and secondary debris flow along the Cotahuasi river, Peru 

  Landslides are among the most frequent and dangerous mass removal processes around the globe. They can be triggered by different phenomena such as earthquakes, extraordinary rains, glacier outbursts, volcanic activity, among others. In this study, we reconstruct the origin and potential cause of a ...

  Palabras claves:
  • Geodynamics
  • Debris avalanche
  • Geology

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  Por | Baby, Patrice; Viveen, Willem; Sanjurjo‐Sanchez, Jorge; Bigot, Jean‐Yves; Dosseto, Antony; Villegas Lanza, Juan Carlos ... (Wiley, 2020-12-05)

  First record of OSL‐dated fluvial sands in a tropical Andean cave reveals rapid late Quaternary tectonic uplift 

  We present the first results of OSL‐dated fluvial sands extracted from a riverside cave in the tropical Andes. The excellent agreement between the ages of the various samples allowed the calculation of a late Quaternary valley incision rate forced by ongoing uplift of an active Subandean fault‐propagation ...

  Palabras claves:
  • Tectonic uplift
  • Andean cave
  • OSL-dated fluvial sands

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  Por | Jiménez, César; Carbonel, Carlos; Villegas Lanza, Juan Carlos (Springer, 2020-11-11)

  Seismic source of the earthquake of Camana Peru 2001 (Mw 8.2) from joint inversion of geodetic and tsunami data 

  On June 23, 2001 at 15:33 local time (20:33 UTC), a strong earthquake of magnitude Mw 8.2 shook the southern region of Peru, causing considerable material damage and the loss of 74 human lives. The epicenter was located in the sea near the city of Atico (Arequipa). As a coseismic effect, a local tsunami ...

  Palabras claves:
  • Tsunami numerical modeling
  • Joint inversion
  • Earthquakes

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  Por | Chau, J. L.; Urco, J. M.; Vierinen, J.; Harding, B. J.; Clahsen, M.; Pfeffer, N. ... (American Geophysical Union, 2021-01)

  Multistatic specular meteor radar network in Peru: system description and initial results 

  The mesosphere and lower thermosphere (MLT) region is dominated globally by dynamics at various scales: planetary waves, tides, gravity waves, and stratified turbulence. The latter two can coexist and be significant at horizontal scales less than 500 km, scales that are difficult to measure. This study ...

  Palabras claves:
  • Low latitude mesosphere
  • MLT dynamics
  • MLT horizontal divergence

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  Por | Suclupe, José; Pacheco, Edgardo E.; Condor, Percy (Institute of Electrical and Electronics Engineers, IEEE, 2020-10-20)

  Automatic identification and observations of blanketing sporadic E events in the equatorial region over Jicamarca 

  In equatorial regions, equatorial electrojet (EEJ) echoes often overlap with blanketing sporadic E (Esb) echoes. Also, Esb events could be classified as rare events over the Jicamarca Radio Observatory (JRO). For that reason, Esb identification is a big challenge for current software. Until now, the ...

  Palabras claves:
  • Blanketing sporadic E
  • Ionograms
  • Machine learning algorithms

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  Por | Aol, Sharon; Buchert, Stephan; Jurua, Edward; Milla, Marco (European Geosciences Union, 2020-10-16)

  Simultaneous ground-based and in situ Swarm observations of equatorial F-region irregularities over Jicamarca 

  Ionospheric irregularities are a common phenomenon in the low-latitude ionosphere. They can be seen in situ as depletions of plasma density, radar plasma plumes, or ionogram spread F by ionosondes. In this paper, we compared simultaneous observations of plasma plumes by the Jicamarca Unattended Long-term ...

  Palabras claves:
  • F region
  • Ground-based measurement
  • Plasma

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  Por | De la Cruz, Luis; Milla, Marco (Institute of Electrical and Electronics Engineers, 2020-10-12)

  Comparison of GB-SAR imaging algorithms for a landslide monitoring application 

  A comparative analysis of three imaging algorithms for Ground Based Synthetic Aperture Radar (GB-SAR) systems has been conducted in order to select the most appropriate algorithm to be used in a landslide monitoring application. These algorithms are Frequency Domain Back Projection (FDBP), Range ...

  Palabras claves:
  • Image reconstruction
  • Imaging
  • Monitoring

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  Por | Reyes, Pablo M.; Kudeki, Erhan; Lehmacher, Gerald A.; Chau, Jorge L.; Milla, Marco (American Geophysical Union, 2020-08)

  VIPIR and 50 MHz radar studies of gravity wave signatures in 150‐km echoes observed at Jicamarca 

  Range‐time‐intensity (RTI) plots of 50 MHz radar backscatter detected at Jicamarca from the 150‐km region of the equatorial ionosphere exhibit necklace‐shaped multilayered structures first reported by Kudeki and Fawcett (1993, https://doi.org/10.1029/93GL01256). The backscatter layers also exhibit ...

  Palabras claves:
  • Equatorial ionosphere
  • 150‐km echoes
  • Radar scattering

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  Por | Laskar, F. I.; Eastes, R. W.; Martinis, C. R.; Daniell, R. E.; Pedatella, N. M.; Burns, A. G. ... (American Geophysical Union, 2020-07)

  Early morning equatorial ionization anomaly from GOLD observations 

  During geomagnetically quiet and solar minimum conditions, spatial variations of the early morning thermosphere‐ionosphere (TI) system are expected to be mainly governed by wave dynamics. To study the postmidnight dynamical coupling, we investigated the early morning equatorial ionization anomaly (EIA) ...

  Palabras claves:
  • Airglow
  • Total electron content
  • Thermosphere‐ionosphere dynamics

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