OCA Global es una empresa privada que tiene sede central en España comprometidos a las actividades de inspección, control de calidad, certificación, ensayos, consultoría y formación y es enfocada para la mejora de la sociedad. OCA Global con sus años de experiencia ofrece un amplio rango de servicios acompañando a los clientes a enfrentar los desafíos de seguridad, medio ambiente, responsabilidad social y calidad a lo largo de distintas industrias y sectores. Actualmente el grupo emplea a mas de 5.000 personas repartidas en mas de 90 oficinas en 15 países distintos (España, Portugal, Andorra, Chile, Perú, Colombia, México, Marruecos, Egipto, Sudáfrica, Emiratos, Arabia Saudita e India). Además, junto con una amplia red de partners y colaboradores, ofrecen los servicios en más de 50 países. OCA Global esta acreditada conforme a la norma ISO 17020, 17025 Y 17021 para múlti...

Original abstract: We present spatial patterns of glacier fluctuations from the Cordillera Blanca, Peru, (glacier area, terminus elevations, median elevations and hypsography) at decadal timescales derived from 1970 aerial photography, 2003 SPOT5 satellite data, Geographic Information Systems (GIS) and statistical analyses. We derived new glacier outlines from the 2003 SPOT images, and ingested them in the Global Land and Ice Measurements from Space (GLIMS) glacier database.We examined changes in glacier area on the eastern and western side of the Cordillera in relation to topographic and climate variables (temperature and precipitation). Results include (1) an estimated glacierized area of 569.6 21 km2 in 2003, (2) an overall loss in glacierized area of 22.4% from 1970 to 2003, (3) an average rise in glacier terminus elevations by 113m and an average rise in the median elevation of glac...

In this work we document and analyze the hydrological annual cycles characterized by a rapid transition between low and high flows in the Amazonas River (Peruvian Amazon) and we show how these events, which may impact vulnerable riverside residents, are related to regional climate variability. Our analysis is based on comprehensive discharge, rainfall and average suspended sediment data sets. Particular attention is paid to the 2010–11 hydrological year, when an unprecedented abrupt transition from the extreme September 2010 drought (8300 m³ s⁻¹) to one of the four highest discharges in April 2011 (49 500 m³ s⁻¹) was recorded at Tamshiyacu (Amazonas River). This unusual transition is also observed in average suspended sediments. Years with a rapid increase in discharge are characterized by negative sea surface temperature anomalies in the central equatorial Pacific during aus...