3 conjuntos de datos encontrados

El Portal MAR contiene el Inventario Global de MAR, un inventario de más de 1200 sitios donde la recarga gestionada de acuíferos (MAR) se ha implementado o se encuentra en operación. El Inventario Global de MAR incluye información sobre el nombre del sitio, el tipo de MAR, el año de implementación del esquema, la fuente del agua de infiltración, el uso final del agua extraída, así como los principales objetivos del proyecto.

Este conjunto de datos presenta un mapa de idoneidad para la MAR en el norte de Australia, desarrollado por la CSIRO (2018). El estudio evalúa las oportunidades para la recarga gestionada de acuíferos en acuíferos superficiales con el fin de apoyar el desarrollo agrícola en las cuencas de Fitzroy, Darwin y Mitchell. El análisis se basa en las características de la geología superficial, la topografía y las estimaciones modeladas del espesor del regolito y la permeabilidad del suelo. El conjunto de datos proporciona información geoespacial que puede apoyar la planificación sostenible de los recursos hídricos y la gestión del agua agrícola en el norte de Australia. Forma parte de la colección global de evaluaciones de idoneidad para MAR compilada por IGRAC.

Si desea contribuir con datos al Portal MAR, por favor contáctenos en info@un-igrac.org.

OpenLISEM is an open-source hydrological model suited for the simulation of floods, flash floods and erosion events. The following sections provide an overview of the results from the OpenLISEM model used in the exposure mapping A 30x30m flood map (maximum flood height) for the BuPuSa region was developed for several points on the intensity-frequency-duration curve. This curve represents the extreme value analysis (EVA) for the rainfall across the BuPuSa area. Based on 50 years of historic rainfall data from TAMSAT the EVA is developed for a 1000 year period. From this different rainfall intensities area taken which are referred to at the return period. The statistical possibility of a certain rainfall intensity to happen once in X many years. Flood maps were developed for the following return periods: 1/2, 1/10, 1/50, 1/100 and 1/1000. In addition to 5 different return periods, two different scenarios were modeled. A short high intensity rainfall event that typically causes flash floods, and a longer term lower intensity rainfall event that typically causes fluvial (river) floods. These events were represented by respectively a 6h rainfall event and a 14 day rainfall event. As a result 10 different flood maps were developed.

The Global Lakes and Wetlands Database (GLWD) version 2 provides a comprehensive and seamless global map of inland surface waters distinguished into 33 waterbody and wetland types. GLWD v2 was developed by harmonizing the best available ground- and satellite-based data sources and has been designed to represent the maximum non-overlapping extents of aquatic ecosystems over the broad contemporary period of 1990-2020.

GLWD v2 represents a total of 18.2 million km2 of wetlands at a grid cell resolution of 15 arc-seconds (approximately 500 m at the equator). The data consist of a map of the dominant waterbody or wetland type in each grid cell, as well as 33 individual class layers which represent the sub-cell fraction of each specific class within each grid cell.

Version 2 of GLWD (Lehner et al., 2025) is the successor of the widely-used GLWD version 1 (Lehner & Döll, 2004). The quality, resolution, and format of GLWD v2 significantly improves upon GLWD v1 and supersedes the older version.