Results 11 to 20 of about 428 (159)
Revista CartográficaEl vapor de agua desempeña un papel fundamental en los procesos climáticos extremos y en la detección y predicción del cambio climático. Existen métodos de observación directa de esta variable, como las radiosondas y los radiómetros, pero resultan ...
Patricia A Rosell +1 more
exaly +3 more sources
Strains arising by seismic events in the SIRGAS-CON network region
Journal of Geodetic Science, 2013 In this study, we investigate surface strains related to seismic events and their relationship with pre- and post-seismic events in Latin America, by analyzing the variation of estimated earth coordinates supplied by a geodetic network called SIRGAS-CON.
Marotta G. S. +3 more
doaj +3 more sources
Metagenomics Reveals Microbial Community Shifts Associated With Contrasting Anthropogenic Impacts in Freshwater Sources of A Coastal Protected Area in Southeastern Brazil. [PDF]
Water Environ ResMetagenomics revealed distinct anthropogenic signatures in the microbiome of freshwater sources on Marambaia Island, supported by the Anthropogenic Impact Index (AII). Impacted sites showed lower microbial diversity, enrichment of fecal‐associated taxa, and 14 antimicrobial resistance genes, whereas conductivity, salinity, and turbidity explained 88.1%
de Paula BB +6 more
europepmc +2 more sources
Morphological and Histometric Alterations in Gonadal and Neural Tissues of Native and Non-Native Fishes From the Lower Doce River Basin in Southeastern Brazil. [PDF]
Anat Histol EmbryolABSTRACT The ichthyofauna of the lower Doce River basin has been exposed to multiple anthropogenic stressors. Among these, the collapse of the Fundão mining tailings dam in Mariana, Minas Gerais, Brazil, in 2015 resulted in massive fish mortality and widespread contamination of aquatic environments.
Marcon L +8 more
europepmc +2 more sources
Ingeniería, 2021 La oficialización del marco CR-SIRGAS implica la necesidad de transformar la información vinculada al marco anterior a esta nueva referencia nacional.
Jorge Moya Zamora +2 more
doaj +1 more source
Sistemas Geodésicos de Referência: Rumo ao GGRS/GGRF
Revista Brasileira de Cartografia, 2020 O estabelecimento de Sistemas Geodésicos de Referência globais integrando características geométricas e físicas é um dos desafios atuais da Geodésia, principalmente devido às demandas de diversas áreas do conhecimento de que as informações relacionadas ...
Regiane Dalazoana +1 more
doaj +1 more source
A Terrestrial Reference Frame (TRF), coordinates and velocities for South American stations: contributions to Central Andes geodynamics [PDF]
Advances in Geosciences, 2009 Satellite positioning systems allow the fixing of the location of a point on the Earth's surface with very good precision and accuracy. To do this, however, it is necessary to determine the point coordinates taking account the reference system and the ...
M. V. Mackern +3 more
doaj +1 more source
Ingeniería, 2022 Las observaciones satelitales derivadas de las constelaciones GNSS están totalmente correlacionas con el instante en la que se realizan las mediciones, sin embargo, los usuarios pueden trasladarlas a diferentes épocas siempre y cuando se cuente con los ...
Jorge Moya Zamora
doaj +1 more source
Assessment of hybrid geoids in Chile and Spain, combining GGM and GNSS/Leveling observations
Geodesy and Geodynamics, 2021 This research presents the results for analyses done to five geopotential global models (GGM), comparing them with ground data from GNSS and leveling in heterogenic zones from the geodetic perspective, in Chile and Spain.
José Antonio Tarrío Mosquera +3 more
doaj +1 more source
Revista Cartográfica, 2018 Los Sistemas Verticales de Referencia (SVRs) junto con sus materializaciones nacionales, regionales y globales, se encuentran en una evolución significativa en los últimos años debido a que son fundamentales para el monitoreo de procesos físicos ...
Andrea Galudht Santacruz Jaramillo
doaj +1 more source