ChemCam, a multitalented instrument for remotely analyzing Martian rocks and soils, fires a laser at targets up to seven meters away to determine their chemical composition. The brief laser shots pack quite a wallop—each five-nanosecond laser pulse delivers a megawatt of power, which suffices to turn a tiny region of rock or soil into glowing, ionized gas, or plasma.

ChemCam’s 110-millimeter telescope then takes in light from the laser-excited plasma and routes it to a suite of spectrometers for analysis. The spectrometers can assess the composition of the sample by parsing individual wavelengths of light in the plasma, each of which is characteristic of a different chemical element.

Above is a before-and-after series from a ChemCam analysis of a patch of soil called Beechey. Each of the fields of view is about eight centimeters across, and the five laser-bored spots in the right image are each two to four millimeters wide. The holes were carved out by a sequence of 50 laser pulses apiece from a distance of about 3.5 meters.

Interesantísima herramienta gratuita online que combina la geolocalización y la temporalización al permitir crear líneas de tiempo interactivas sobre mapas de Google. Estas timelines interactivas geolocalizadas, que nos propone MyHistro, pueden ser un gran recurso didáctico para docentes y estudiantes.

The protection and the sustainable management of soil resources in Africa are of paramount importance, particularly in the context of the uncertain impact of climate change and the increasing pressures of human activities. From the perspective of a policy-maker interested in topics such as food security and land degradation in Africa, this situation requires up-to-date and relevant soil information at regional and continental scales. To provide timely and reliable information on soils at synoptic scales, moderate and coarse spatial resolution satellite data offer many possibilities. The paper reviews how a range of multispectral, thermal infrared, passive microwave and active microwave spaceborne sensors can be used in the delineation of soil units, as well as in the assessment of some of their key properties and threats to soil functions from pressures such as water and wind erosion, landslides and salinization. The paper shows that remotely sensed data can be used for mapping soils in Africa but often need to be combined with ancillary data and field observations in order to be effective. Remote sensing is shown to be a key component of the emerging discipline of digital soil mapping.

En euratlas.com podemos encontrar una inmensa colección de mapas con toda la historia y geografía de Europa desde el año 1 hasta nuestros días.

Mapas antiguos, físicos, políticos… todos disponibles de forma gratuita y perfectamente clasificados, siendo un excelente recurso para acompañar artículos o impartir clases.

Es posible ver mapas con el movimiento de ejércitos en guerras antiguas, así como algunos especializados en civilizaciones específicas.

Google Maps anuncia que a partir de hoy ya se pueden ver imágenes submarinas en algunos lugares del mundo, navegando por corales y fauna

Grandes incendios forestales en España durante 2012.

This is a repeat, but you simply MUST check out Louisiana right now on this map as Hurricane Isaac has made landfall.  

"This interactive map is a 'nearly live' dynamic display of United States winds patterns (speed, direction and broad spatial context).  Click on the image to see the animated, large version."

Google Moon is a service similar to Google Maps that shows satellite images of the Moon. It was launched by Google on July 20, 2005, the 36th anniversary of the Apollo 11 lunar landing. The landing site of each of the Apollo missions is shown on the satellite image, providing more information on each mission as the user zooms in.

Google Maps es el nombre de un servicio gratuito de Google. Es un servidor de aplicaciones de mapas en la Web. Ofrece imágenes de mapas desplazables, así como fotos satelitales del mundo entero e incluso la ruta entre diferentes ubicaciones o imágenes a pie de calle Street View. Desde el 6 de octubre del 2005, Google Maps es parte de Google Local.
Es similar a Google Earth, una aplicación Windows/Mac/Linux que ofrece vistas del Globo terráqueo impactantes, pero que no es fácil de integrar a páginas Web.
Ofrece, asimismo, la posibilidad de que cualquier propietario de una página Web integre muchas de sus características a su sitio.

Los problemas propios de un mundo globalizado demandan con urgencia que las personas aprendan a manejar información geográfica cada vez más compleja.

The cloud is growing in importance for GIS professionals, with cost efficiency, scalability, and flexibility as major drivers. We can see the beginnings of cloud options for many organizations with the ability to run ArcGIS Server ...

La aplicación oficial de Google para grabar y compartir nuestros recorridos GPS se renueva. Hablamos de My Tracks que acaba de recibir una importante actualización en Google Play.

The protection and the sustainable management of soil resources in Africa are of paramount importance, particularly in the context of the uncertain impact of climate change and the increasing pressures of human activities. From the perspective of a policy-maker interested in topics such as food security and land degradation in Africa, this situation requires up-to-date and relevant soil information at regional and continental scales. To provide timely and reliable information on soils at synoptic scales, moderate and coarse spatial resolution satellite data offer many possibilities. The paper reviews how a range of multispectral, thermal infrared, passive microwave and active microwave spaceborne sensors can be used in the delineation of soil units, as well as in the assessment of some of their key properties and threats to soil functions from pressures such as water and wind erosion, landslides and salinization. The paper shows that remotely sensed data can be used for mapping soils in Africa but often need to be combined with ancillary data and field observations in order to be effective. Remote sensing is shown to be a key component of the emerging discipline of digital soil mapping.

Aunque todavía no existe un plugin que conecte de manera automática wordpress y arc gis on line. Utilizar los servicios de mapas de arc gis on line en tu blog de wordpress es sencillo y solo requiere de cuatro pasos Crear  el web map en arc gis on...