Ileana Ortega

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Large earthquakes produce crustal deformation that can be quantified by geodetic measurements, allowing for the determination of the slip distribution on the fault. We used data from Global Positioning System (GPS) networks in Central Chile to infer the static deformation and the kinematics of the 2010 moment magnitude (M(w)) 8.8 Maule megathrust(More)
Carbon monoxide (CO) is an important pollutant in urban agglomerations. Quantifying the total burden of this pollutant in a megacity is challenging because not only its surface concentration but also its vertical dispersion present different behaviours and high variability. The diurnal trend of columnar CO in the boundary layer of Mexico City has been(More)
Continuous carbon monoxide (CO) total column densities above the Universidad Nacional Autónoma de México (UNAM) campus in Mexico City have been derived from solar absorption infrared spectroscopic measurements since October 2007. Its diurnal evolution is used in the present study in conjunction with other ground-based and satellite data to develop a(More)
M. Béjar-Pizarro,1,2 D. Carrizo,1,3 A. Socquet,1 R. Armijo,1 S. Barrientos,3∗ F. Bondoux,4∗ S. Bonvalot,4∗ J. Campos,3∗ D. Comte,3∗ J. B. de Chabalier,1∗ O. Charade,5∗ A. Delorme,1∗ G. Gabalda,4∗ J. Galetzka,6∗ J. Genrich,6∗ A. Nercessian,1∗ M. Olcay,7∗ F. Ortega,6∗ I. Ortega,3∗ D. Remy,4∗ J. C. Ruegg,1∗ M. Simons,6∗ C. Valderas3∗ and C. Vigny8∗ 1Institut(More)
Antarctic benthos has been a main target in Antarctic research, but very few quantitative studies have been carried out in the littoral zone, which may be seasonally covered by macroalgae. In this work, we studied (1) cover and biomass of the macroalgae Iridaea cordata and Adenocystis utricularis, and (2) composition of macrobenthic assemblage associated(More)
The suprabenthos or hyperbenthos is the macrofaunal assemblage of small-sized organisms that interact for some time in the benthic boundary layer. Information about the taxonomic composition and role of suprabenthic species, especially in littoral zones, is scarce and scattered. This work attempts to contribute alleviate this problem. We analyze the(More)
Astropecten marginatus is a sea star widely distributed in Northern and Eastern South America, found on sandy and muddy bottoms, in shallow and deep waters. To describe some of its ecological characteristics, we calculated it spatial-temporal distribution, population parameters (based on size and weight) and diet in the Orinoco Delta ecoregion (Venezuela).(More)
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