Browsing Facultad de Ciencias de la Tierra y el Mar by Issue Date
Now showing items 21-40 of 1202
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Correlation between the age of the subducting Cocos Plate and the geometry of the Wadati-Benioff zone under Nicaragua and Costa Rica.
(Universidad Nacional, Costa Rica, 1995)High- resolution seismicity data from Costa Rica and southern Nicaragua have been used to image the geometry of the Wadati-Benioff zone under southern Central America. The data include 9,514 events with computed horizontal ... -
Altitudinal zonation of montane Quercus forests along two transects in Chirripó National Park, Costa Rica
(Springer, 1995-08)Abiotic and vegetation data were collected along two altitudinal transects through mature montane Quercus forests on the Pacific and Atlantic slopes of Costa Rica's Chirripó Massif. Between 2000 and 3200 m asl twenty-four ... -
The March 25, 1990 (Mw=7.0, ML=6.8), earthquake at the entrance of the Nicoya Gulf, Costa Rica: Its prior activity, foreshocks, aftershocks, and triggered seismicity
(American Geophysical Union, 1995-10-10)On March 25, 1990 a large earthquake (Mw = 7.0, ML = 6.8) occurred at the entrance of the Nicoya Gulf, Costa Rica, at 1322:55.6 UTC, producing considerable damage in central Costa Rica and generating much interest about ... -
The March 25, 1990 (Mw=7.0 Ml=6.8) earthquake at the entrance of the Nicoya Gulf, Costa Rica: its prior activity, foreshocks, aftershocks and triggered seismicity
(1995-10-10)On March 25, 1990 a large earthquake( Mw=7.0, ML=6.8) occurreda t the entranceo f the Nicoya Gulf, CostaR ica, at 1322:55.6U TC, producingc onsiderabled amagei n centralC osta Rica andg eneratingm uchi nteresta boutw ... -
Contexts and patterns of injuries in free-ranging male baboons (Papio Cynocephalus)
(Universidad Nacional, Costa Rica, 1996)Injury in male baboons (Papio cynocephalus) was investigated as an indicator of damaging fights in order to provide a framework for analyses of conflict resolution and dynamics of agonistic competition in primates. The ... -
Deer habitat in western Costa Rica: Impacts of changing technology and land use
(Universidad Nacional, Costa Rica., 1996)White-tailed deer (Odocoileus virginianus) numbers on the Pacific Coast of Costa Rica probably peaked in the nineteenth century as native dry tropical forest was converted to shrubland and secondary forest. Overhunting ... -
Seafloor structural observations, Costa Rica accretionary prism
(1996-04-15)By studying seafloor morphology we can make associations between near surface defornation, fluid flow and the overakk structural framework of accretionary prisms. In February, 1994 a DS/RV ALVIN program to the Costa Rica ... -
First nest record of the Bare-shanked screech-owl (Otus clarkii)
(Universidad Nacional, Costa Rica., 1997)Reportamos el primer registro de anidación de la Lechucita Serranera (Otus clarkii), encontrado en las tierras altas de Costa Rica. El nido se localizó en un árbol de encino (Quercus copeyensis) a una altura de 3.3m en una ... -
Growth of Mantled Howler Groups in a Regenerating Costa Rican Dry Forest
(Universidad Nacional, Costa Rica., 1998)We examined population dynamics in mantled howlers (Alouatta palliata palliata) in a regenerating tropical dry forest in Santa Rosa National Park (SRNP), Costa Rica. The population has grown at a rate of about 7% per annum ... -
Ambito de hogar y utilización de hábitat de dos grupos de venados Cola Blanca Odocoileus virginianus (Artiodactyla: Cervidae) reubicados en un ambiente tropical
(Universidad Nacional, Costa Rica, 1998)Ocho venados cola blanca fueron liberados en la finca La Emilia, Guanácaste, Costa Rica, durante noviembre de 1987 y marzo de 1988. Cuatro hembras procedían de una población insular (Isla San Lucas, ISL) y habían sido ... -
A new nesting record for the jabiru in Costa Rica
(Waterbird Society, 1998)I document the first nesting record of theJabiru (Jabiru mycteria) in "Los Guatuzos" forest floodplain, Alajuela province, Costa Rica. The active nest was located in March 1995 at 10°49'23.70"N and 84°47'23.20"W. The nest ... -
Pn-wave observations in Costa Rica
(Universidad Nacional Autónoma de México, 1998-02-18)Tiempos de arribos, medidos en la Red Sismográfica de Costa Rica, fueron empleados para extraer información sobre la corteza y el manto por debajo de Costa Rica. Datos de tiempos de arribo de la onda P y S de 100 sismos ... -
ANTOLOGÍA SOBRE POLITIONATOS: COMPUESTOS DE AZUFRE EXISTENTES EN LOS LAGOS CRATÉRICOS DE VOLCANES ACTIVOS
(Revista de Vulcanología, Sismología y Tectónica., 1999)En la siguiente recopilación bibliográfica sobre los oxianiones de azufre llamados politionatos, con fórmula general SxO6 2-, se contemplan algunas de sus propiedades físico-químicas, y se hace énfasis principalmente en ... -
Efecto de las actividades humanas sobre la diversidad de mamíferos terrestres en un gradiente altitudinal
(Universidad Nacional, Costa Rica., 1999)The effect ofhuman activity on terrestrial marnmals was studied with footprint counts in Guanacaste, Costa Rica (loo30"N, 85°40'W) in February 1998 (in fifty 2 m2 quadrats). The most cornmon species were Canis latrans, ... -
Neotropical dry forest wildlife water hole use and management
(Universidad Nacional, Costa Rica., 1999)Selected wildlife species diurnal use of a natural water hole (QO) and an artificial water hole (AW) were studied during 1990 dry season at Guanacaste Conservation Area, Costa Rica. In total, 919 individuals (six marnmal ... -
Late dry season habitat use of common opossum, Didelphis marsupialis (Marsupialia: Didelphidae) in neotropical lower montane agricultural areas
(Universidad Nacional, Costa Rica., 1999)Three Didelphis marsupialis were radio tracked during late dry season (23 February-26 April, 1983) in agricultural area at 1500 m elevation in Central Valley, Costa Rica. All animals were nocturnally active, significantly ... -
Seismic cycle and plate margin deformation in Costa Rica: GPS observations from 1994 to 1997
(American Geophysical Union, 1999-12-10)Global Positioning System (GPS) observations in Costa Rica from 1994 to 1997 reveal a complex pattern of motion consistent with the superposition of seismic cycle and secular plate margin deformation. In the south, velocity ... -
Evaluation of a battery of toxicity tests for use in the assessment of water quality in a Costa Rican laboratory
(Wiley Periodicals, Estados Unidos, 2000)The Laboratory for Ecotoxicological Studies (ECOTOX) of IRET evaluated the following toxicity tests: Daphnia magna (daphnia test), Hydra attenuata (hydra test), Allium sp. (onion test), Panagrellus redivivus (nematode ... -
Mapa Geológico de la Hoja Istarú
(Oficina de Defensa CivilDirección de Geología Minas y PetróleoMinisterio de Industria y Comercio, 2000)Digitalización del Mapa Geológico de la Hoja Istarú, como parte de las actividades del Proyecto "Utilización de modelaje computacional y SIG como herramientas para la gestión de riesgo por caída de ceniza proveniente del ...