Results 61 to 70 of about 2,009 (208)

Glottidia audebarti (Broderip), (Brachiopoda, Lingulidae) from the Gulf of Nicoya, Costa Rica

open access: yes, 2016
Ejemplares del braquiópodo excavador Glottidia audebarti (Broderip) fueron colectados con un barreno en la planicie fangosa (65% arena, 32% limo + arcilla) de Punta Morales, en la región superior del Golfo de Nicoya, un estuario en la costa Pacífica de Costa Rica.
Emig, Christian C, Vargas, José A
openaire   +2 more sources

CARACTERIZACIÓN DE LA PESCA DEL TIBURÓN MARTILLO SPHYRNA LEWINI , EN LA PARTE EXTERNA DEL GOLFO DE NICOYA, COSTA RICA

open access: yesRevista Ciencias Marinas y Costeras, 2011
En el ámbito nivel mundial, el tiburón martillo (Sphyrna lewini) es una de las especies más afectadas por la sobrepesca y el aleteo. Recientemente se incorporó a la Lista Roja de la UICN como especie en peligro de extinción. El presente estudio pretendió
Ilena Zanella   +2 more
doaj  

Ophiolite-Related Ultramafic Rocks (Serpentinites) in the Caribbean Region : a Review of their Occurrence, Composition, Origin, Emplacement and Ni-Laterite Soil Formation [PDF]

open access: yes, 2006
Ultramafic rocks, mainly serpentinized peridotites of mantle origin, are mostly associated with the ophiolites of Mesozoic age that occur in belts along three of the margins of the Caribbean plate. The most extensive exposures are in Cuba. The ultramafic-
Draper, G.   +4 more
core   +4 more sources

[Variation of thermohaline properties in the Nicoya Gulf, Costa Rica].

open access: yesRevista de biologia tropical, 2005
The time-space behavior of thermohaline properties of the water masses in the Gulf of Nicoya, a tropical estuary in the Costa Rican Pacific coast, was studied by sampling monthly from April 1992 to April 1993. The saline field has a seasonal maximum during April, a month before the maximum temperature is observed.
C L, Brenes, S, Léon, J, Chaves
openaire   +1 more source

The 2010Mw8.8 Maule, Chile earthquake: Nucleation and rupture propagation controlled by a subducted topographic high [PDF]

open access: yes, 2012
Knowledge of seismic properties in an earthquake rupture zone is essential for understanding the factors controlling rupture dynamics. We use data from aftershocks following the Maule earthquake to derive a three-dimensional seismic velocity model of the
Haberland, Christian A   +5 more
core   +1 more source

Reproducción y alimentación del tiburón enano Mustelus dorsalis (Pisces: Triakidae) en el Golfo de Nicoya, Costa Rica: Elementos para un manejo sostenible

open access: yesRevista de Biología Tropical, 2006
Se determinaron aspectos reproductivos y alimentarios del tiburón enano Mustelus dorsalis, a partir de 311 ejemplares capturados con línea y anzuelo en el Golfo de Nicoya, Costa Rica, durante marzo de 1999 y mayo de 2000. Se reconocieron 250 hembras y 61
José Rodrigo Rojas M
doaj  

A study of the Eastern Pacific fishery for tuna baitfishes, with particular reference to the anchoveta (Cetengraulis mysticetus) [PDF]

open access: yes, 1957
ENGLISH: Most of the catches of yellowfin and skipjack tuna from the Eastern Pacific Ocean are made by vessels fishing with poles and lines and live bait.
Alverson, Franklin G., Shimada, Bell M.
core  

Interplate seismicity at the CRISP drilling site: The 2002 Mw=6.4 Osa Earthquake at the southeastern end of the Middle America Trench [PDF]

open access: yes, 2014
We investigate potential relations between variations in seafloor relief and age of the incoming plate and interplate seismicity. Westward from Osa Peninsula in Costa Rica, a major change in the character of the incoming Cocos Plate is displayed by ...
Abercrombie   +62 more
core   +2 more sources

[Some features of ocean currents in Gulf of Nicoya, Costa Rica].

open access: yesRevista de biologia tropical, 2007
The spatial and vertical structure of the water currents and its relationship with the tidal cycles were studied using current meters in the Gulf of Nicoya. In the upper gulf, the vertical marine current differences increase as the depth increases. The water column at the station near Chira Island (upper gulf) shows the smaller changes in currents and ...
Omar G, Lizano, Eric J, Alfaro
openaire   +1 more source

Metales traza en sedimentos costeros de Costa Rica

open access: yesRevista de Biología Tropical, 2004
Se determinó la concentración de hierro, plomo, cobre y zinc, en sedimentos de cuatro ecosistemas costeros de Costa Rica, por espectroscopia de absorción atómica, con llama o con horno de grafito.
Jairo García-Céspedes   +2 more
doaj  

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