Actividades Pesqueras de Mexico en 1938

Catch statistics for Mexican waters 1938. (PDF has 181 pages.)

Humor y comicidad en el misántropo: la evolución del tipo desde el ámbito dramático (Menandro y Molière) hasta la narrativa (Villalonga, Moravia y Castellani)

Presentado en las Jornadas sobre "El humor (y los humores) en el mundo antiguo", organizado por el Departamento de Estudios Clásicos y el Instituto de Ciencias de la Antigüedad de la UPV y celebrado en Vitoria-Gasteiz los días 16 y 17 de octubre de 2007.

Oceanographic, meteorological, satellite and aircraft observations for project Little Window 2: May 1971

ENGLISH: In May 1971, a joint united states - Mexican experiment, Project Little Window 2, (LW-2) involving data collected by satellite, aircraft and ship sensors was made in the southern part of the Gulf of California. LW-2 was planned as an improved and enlarged version of LW-l (conducted the previous year; Stevenson and Miller, 1971) with field work scheduled to be made within a 200 by 200 km square region in the Gulf of California. The purposes of the new field study were to determine through coordinated measurements from ships, aircraft and satellites, the utility of weather satellites to measure surface temperature features of the ocean from space and specifically to evaluate the high resolution infrared sensors aboard N~ 1, ITOS 1 and NIMBUS 4 and to estimate the magnitude of the atmospheric correction factors needed to bring the data from the spacecraft sensors into agreement with surface measurements. Due to technical problems during LW-2, however, useful data could not be obtained from ITOS 1 and NIMBUS 4 so satellite information from only NOAA-1 was available for comparison. In addition, a new purpose was added, i.e., to determine the feasibility of using an Automatic picture Transmission (APT) receiver on shore and at sea to obtain good quality infrared data for the local region. SPANISH: En mayo 1971, los Estados Unidos y México realizaron un experimento en conjunto, Proyecto Little Window 2 (LW-2), en el que se incluyen datos obtenidos mediante captadores de satélites, aviones y barcos en la parte meridional del Golfo de California. Se planeó LW-2 para mejorar y ampliar el proyecto de LW-l (conducido el año anterior; Stevenson y Miller, 1971), realizándose el trabajo experimental en una región de 200 por 200 km cuadrados, en el Golfo de California. El objeto de este nuevo estudio experimental fue determinar mediante reconocimientos coordinados de barcos, aviones y satélites la conveniencia de los satélites meteorológicos para averiguar las características de la temperatura superficial del océano desde el espacio, y especialmente, evaluar los captadores infrarrojos de alta resolución a bordo de NOAA 1, ITOS 1 Y NIMBUS 4, y estimar la magnitud de los factores de corrección atmosféricos necesarios para corregir los datos de los captadores espaciales para que concuerden con los registros de la superficie. Sin embargo, debido a problemas técnicos durante LW-2, no fue posible obtener datos adecuados de ITOS 1 y NIMBUS 4, as1 que solo se pudo disponer de la información de NOAA 1 para hacer las comparaciones. Además se quiso determinar la posibilidad de usar un receptor de Trasmisión Automático de Fotografias (APT) en el mar para obtener datos infarojos de buena calidad en la región local. (PDF contains 525 pages.)

Report of the Inter-American Tropical Tuna Commission for the year 1964

ENGLISH: The Inter-American Tropical Tuna Commission operates under the authority and direction of a Convention originally negotiated between the Republic of Costa Rica and the United States of America, which entered into force in 1950. The Convention is open to adherence by other governments whose nationals participate in the fisheries covered by the Convention. Under this provision, the Republic of Panama adhered in 1953, the Republic of Ecuador in 1961 and the United Mexican States in 1964. SPANISH: La Comisión Interamericana del Atún Tropical funciona bajo la autoridad y dirección de una Convención negociada originalmente entre la República de Costa Rica y los Estados Unidos de América, la cuál entró en vigencia en 1950. La Convención está abierta a la adhesión de los gobiernos de otros países cuyos ciudadanos participan en las pesquerías objeto de la Convención. Acogiéndose a esta cláusula, la República de Panamá se adhirió a la Convención en 1953, la República de Ecuador en 1961 y los Estados Unidos Mexicanos en 1964. (PDF contains 98 pages.)

Report of the Inter-American Tropical Tuna Commission for the year 1966

ENGLISH: The Inter-American Tropical Tuna Commission operates under the authority and direction of a Convention originally entered into by the Republic of Costa Rica and the United States of America. The Convention, which came into force in 1950, is open to adherence by other governments whose nationals participate in the fisheries covered by the Convention. Under this provision the Republic of Panama adhered in 1953, the Republic of Ecuador in 1961, and the United Mexican States in 1964. SPANISH: La Comisión Interamericana del Atún Tropical funciona bajo la autoridad y dirección de una Convención formada originalmente entre la República de Costa Rica y los Estados Unidos de América. La Convención entró en vigencia en 1950, está abierta a la adhesión de otros gobiernos cuyos ciudadanos participen en las pesquerías objeto de la Convención. Bajo esta cláusula, la República de Panamá se adhirió en 1953, la República del Ecuador en 1961 y los Estados Unidos Mexicanos en 1964. (PDF contains 138 pages.)

Report of the Inter-American Tropical Tuna Commission for the year 1967

ENGLISH: The Inter-American Tropical Tuna Commission was created and operates under the authority of a Convention first negotiated between the governments of the Republic of Costa Rica and the United States of America. The Convention entered into force in 1950. It is open to adherence by other governments whose nationals fish for tunas in the eastern Pacific area. Under this provision, Panama adhered in 1953, Ecuador in 1961, the United Mexican States in 1964. Canada applied for membership in 1967. Her membership will become effective on April 1, 1968. On August 21, 1967 the Ecuadorian government, for financial reasons, elected to withdraw from active membership. Under Convention ruling, this means that she remains a full member until August 21, 1968. SPANISH: La Comisión Interamericana del Atún Tropical fue originada y está bajo la autoridad de una Convención que fue negociada inicialmente entre los gobiernos de la República de Costa Rica y los Estados Unidos de América. La Convención entró en vigencia en 1950. Está abierta a la afiliación de otros gobiernos cuyos ciudadanos pescan atunes en el área del Pacífico oriental. Bajo esta estipulación, Panamá se afilió en 1953, Ecuador en 1961 y los Estados Unidos Mexicanos en 1964. Canadá presentó su ap1licación en 1967. Su afiliación será efectiva el 1 de abril de 1968. El 21 de agosto de 1967, el gobierno ecuatoriano por razones financieras decidió retirar su participación activa. Bajo las reglas de la Convención el Ecuador sigue actuando como miembro hasta el 21 de agosto de 1968. (PDF contains 144 pages.)

Report of the Inter-American Tropical Tuna Commission for the year 1968

ENGLISH: The Inter-American Tropical Tuna Commission operates under the authority and direction of a Convention originally entered into by the Republic of Costa Rica and the United States of America. The Convention, which came into force in 1950, is open to adherence by other governments whose nationals fish in the eastern tropical Pacific. Under this provision the Republic of Panama adhered in 1953, the Republic of Ecuador in 1961, the United Mexican States in 1964 and Canada in 1968. In 1967 Ecuador gave notice of her intent to withdraw from the Commission and her withdrawal became effective on August 21, 1968. SPANISH:La Comisión Interamericana del Atún Tropical está bajo la autoridad y dirección de una Convención la cual fue originalmente formada por la República de Costa Rica y los Estados Unidos de América. La Convención, vigente desde 1950, está abierta a la afiliación de otros gobiernos cuyos nacionales pesquen en. el Pacífico oriental tropical. Bajo esta medida la República de Panamá se afilió en 1953, la. República del Ecuador en 1961, los Estados Unidos Mexicanos en 1964 y' el Canadá en 19Ei8. En 1967, el Ecuador anunció su intención de retirarse de la Comisión y la resignación se hizo efectiva el 21 de agosto de 1968. (PDF contains 128 pages.)

Report of the Inter-American Tropical Tuna Commission for the year 1969

ENGLISH: The Inter-American Tropical Tuna Commission operates under the authority and direction of a convention originally entered into by the Republic of Costa Rica and the United States of America. The convention, which came into force in 1950, is open to adherence by other governments whose nationals fish for tropical tunas in the eastern Pacific Ocean. Under this provision the Republic of Panama adhered in 1953, the Republic of Ecuador in 1961, the United Mexican States in 1964 and Canada in 1968. In 1967, Ecuador gave notice of her intent to withdraw from the Commission, and her withdrawal became effective on August 21, 1968. SPANISH: La Comisión Interamericana del Atún Tropical está bajo la autoridad y dirección de una convención la cual fue originalmente formada por la República de Costa Rica y los Estados Unidos de América. La Convención, vigente desde 1950, está abierta a la afiliación de otros gobiernos cuyos nacionales pesquen túnidos en el Pacifico oriental tropical. Bajo esta medida la República de Panamá se afilió en 1953, la República del Ecuador en 1961, los Estados Unidos Mexicanos en 1964, y Canadá en 1968. En 1967, el Ecuador anunció su intención de retirarse de la Comisión y la renuncia se hizo efectiva el 21 de agosto de 1968. (PDF contains 117 pages.)

Report of the Inter-American Tropical Tuna Commission for the year 1970

ENGLISH: The Inter-American Tropical Tuna Commission operates under the authority and direction of a convention originally entered into by the Republic of Costa Rica and the United States of America. The convention, which came into force in 1950, is open to adherence by other governments whose nationals fish for tropical tunas in the eastern Pacific Ocean. Under this provision the Republic of Panama adhered in 1953, the Republic of Ecuador in 1961, the United Mexican States in 1964, Canada in 1968 and Japan in 1970. In 1967, Ecuador gave notice of her intent to withdraw from the Commission, and her withdrawal became effective on August 21, 1968. SPANISH:La Comisión Interamericana del Atún Tropical está bajo la autoridad y dirección de una convención la cual fue originalmente formada por la República de Costa Rica y los Estados Unidos de América. La Convención, vigente desde 1950, está abierta a la afiliación de otros gobiernos cuyos nacionales pesquen atún en el Pacífico oriental tropical. Bajo esta medida la República de Panamá se afilió en 1953, la República del Ecuador en 1961, los Estados Unidos Mexicanos en 1964, Canadá en 1968 y el Japón en 1970. En 1967, el Ecuador anunció su intención de retirarse de la Comisión y la renuncia se hizo efectiva el 21 de agosto de 1968. (PDF contains 128 pages.)

Report of the Inter-American Tropical Tuna Commission for the year 1971

ENGLISH: The Inter-American Tropical Tuna Commission operates under the authority and direction of a convention originally entered into by the Republic of Costa Rica and the United States of America. The convention, which came into force in 1950, is open to adherence by other governments whose nationals fish for tropical tunas in the eastern Pacific Ocean. Under this provision the Republic of Panama adhered in 1953, the Republic of Ecuador in 1961, the United Mexican States in 1964, Canada in 1968 and Japan in 1970. In 1967, Ecuador gave notice of her intent to withdraw from the Commission, and her withdrawal became effective on August 21,1968. SPANISH: La Comisión Interamericana del Atún Tropical está bajo la autoridad y dirección de una convención la cual fue originalmente formada por la República de Costa Rica y los Estados Unidos de América. La Convención, vigente desde 1950, está abierta a la afiliación de otros gobiernos cuyos nacionales pesquen atún en el Pacífico oriental tropical. Bajo esta medida la República de Panamá se afilió en 1953, la República del Ecuador en 1961, los Estados Unidos Mexicanos en 1964, Canadá en 1968 y el Japón en 1970. En 1967, el Ecuador anunció su intención de retirarse de la Comisión y la renuncia se hizo efectiva el 21 de agosto de 1968. (PDF contains 127 pages.)

Plate tectonic constraints on flat subduction and paleomagnetic constraints on rifting

Plate tectonics shapes our dynamic planet through the creation and destruction of lithosphere. This work focuses on increasing our understanding of the processes at convergent and divergent boundaries through geologic and geophysical observations at modern plate boundaries. Recent work had shown that the subducting slab in central Mexico is most likely the flattest on Earth, yet there was no consensus about what caused it to originate. The first chapter of this thesis sets out to systematically test all previously proposed mechanisms for slab flattening on the Mexican case. What we have discovered is that there is only one model for which we can find no contradictory evidence. The lack of applicability of the standard mechanisms used to explain flat subduction in the Mexican example led us to question their applications globally. The second chapter expands the search for a cause of flat subduction, in both space and time. We focus on the historical record of flat slabs in South America and look for a correlation between the shallowing and steepening of slab segments with relation to the inferred thickness of the subducting oceanic crust. Using plate reconstructions and the assumption that a crustal anomaly formed on a spreading ridge will produce two conjugate features, we recreate the history of subduction along the South American margin and find that there is no correlation between the subduction of a bathymetric highs and shallow subduction. These studies have proven that a subducting crustal anomaly is neither a sufficient or necessary condition of flat slab subduction. The final chapter in this thesis looks at the divergent plate boundary in the Gulf of California. Through geologic reconnaissance mapping and an intensive paleomagnetic sampling campaign, we try to constrain the location and orientation of a widespread volcanic marker unit, the Tuff of San Felipe. Although the resolution of the applied magnetic susceptibility technique proved inadequate to contain the direction of the pyroclastic flow with high precision, we have been able to detect the tectonic rotation of coherent blocks as well as rotation within blocks.

Oceanographic Profiling and Spectroradiometer Observations from the MOCE-2 Cruise: 28 March to 14 April 1993

This report contains results from the second cruise of the Modis Optical Characterization Experiment (MOCE). Data presented here were obtained on the Mexican Research Vessel El Puma between 29 March and 13 April along the Pacific coast of Baja California and in the Gulf of California. Three types of data are reported: high spectral resolution radiometry at three depths for 13 stations; salinity, temperature beam attenuation and chlorophyll-a fluorescence, profiles at the same stations; and total suspended matter and suspended organic carbon and nitrogen.(PDF is 90 pages.)

Eavan Boland and Paula Meehan : Irish voices of the past

History, myth, exile, identity—for generations those have been the themes of Irish poetry, an Irish poetry written almost exclusively by male poets. As women moved in to claim a voice the themes were often the same, though reworked in essential ways. The key to that reworking, the pivot for an Irish women’s poetry, was the development of a female poetic identity. Eavan Boland led the way. In particular, Boland’s struggles as the first prominent female poet of modern Irish Literature emphasize a search for self-identity. At the forefront of this movement and a precedent for those around her, she establishes themes that pave the way for Irish women writers. With Boland, comes a hopeful recovery of the contemporary female literary experience, with the perspective and approach towards self-identity endlessly evolving over time with each new poet. Inspired by Boland, but a generation younger, Paula Meehan explores similar themes of female constraint, yet raises her own distinctive concerns, in particular the division of male and female roles and generational conflict, exploring what is real and ordinary.

Seismic structure along transitions from flat to normal subduction: central Mexico, southern Peru, and southwest Japan

The fine-scale seismic structure of the central Mexico, southern Peru, and southwest Japan subduction zones is studied using intraslab earthquakes recorded by temporary and permanent regional seismic arrays. The morphology of the transition from flat to normal subduction is explored in central Mexico and southern Peru, while in southwest Japan the spatial coincidence of a thin ultra-slow velocity layer (USL) atop the flat slab with locations of slow slip events (SSEs) is explored. This USL is also observed in central Mexico and southern Peru, where its lateral extent is used as one constraint on the nature of the flat-to-normal transitions.

In western central Mexico, I find an edge to this USL which is coincident with the western boundary of the projected Orozco Fracture Zone (OFZ) region. Forward modeling of the 2D structure of the subducted Cocos plate using a finite-difference algorithm provides constraints on the velocity and geometry of the slab’s seismic structure in this region and confirms the location of the USL edge. I propose that the Cocos slab is currently fragmenting into a North Cocos plate and a South Cocos plate along the projection of the OFZ, by a process analogous to that which occurred when the Rivera plate separated from the proto-Cocos plate 10 Ma.

In eastern central Mexico, observations of a sharp transition in slab dip near the abrupt end of the Trans Mexican Volcanic Belt (TMVB) suggest a possible slab tear located within the subducted South Cocos plate. The eastern lateral extent of the USL is found to be coincident with these features and with the western boundary of a zone of decreased seismicity, indicating a change in structure which I interpret as evidence of a possible tear. Analysis of intraslab seismicity patterns and focal mechanism orientations and faulting types provides further support for a possible tear in the South Cocos slab. This potential tear, together with the tear along the projection of the OFZ to the northwest, indicates a slab rollback mechanism in which separate slab segments move independently, allowing for mantle flow between the segments.

In southern Peru, observations of a gradual increase in slab dip coupled with a lack of any gaps or vertical offsets in the intraslab seismicity suggest a smooth contortion of the slab. Concentrations of focal mechanisms at orientations which are indicative of slab bending are also observed along the change in slab geometry. The lateral extent of the USL atop the horizontal Nazca slab is found to be coincident with the margin of the projected linear continuation of the subducting Nazca Ridge, implying a causal relationship, but not a slab tear. Waveform modeling of the 2D structure in southern Peru provides constraints on the velocity and geometry of the slab’s seismic structure and confirms the absence of any tears in the slab.

In southwest Japan, I estimate the location of a possible USL along the Philippine Sea slab surface and find this region of low velocity to be coincident with locations of SSEs that have occurred in this region. I interpret the source of the possible USL in this region as fluids dehydrated from the subducting plate, forming a high pore-fluid pressure layer, which would be expected to decrease the coupling on the plate interface and promote SSEs.

Freshwater biological research in Mexico: A brief historical review

Apart from a couple of early papers in the 1600s, the development of freshwater biology as a science in Mexico began in the last century. Taxonomic studies were made especially on algae, aquatic insects, crustaceans, annelid worms and aquatic plants. The great impetus acquired by limnology in Europe and America in the first half of the 20th Century stimulated foreign researchers to come and work in Mexico. During this period the Instituto de Biologia, belonging to the Universidad Nacional Autonoma de Mexico, was created in 1930. The Institute had a section of Hydrobiology that contributed to the limnological characterization of Mexican lakes and ponds. In 1962, the Instituto Nacional de Investigaciones Biologico-Pesqueras was created to bring together the work of several institutes working on the native ichthyofauna, the restocking of reservoirs, and aquaculture.