La Réunion Island is affected by constant slope movement and huge landslides due to the rough topography, a wet climate and favourable geological context. Radar interferometry can provide a mean for identifying landslides on a large scale. Because of the vegetation cover, C-band interferograms are generally hampered. Using JERS-1 images, we show that the L-Band can be used to overcome the loss ...

Object-based classification is a promising methodology. Unlike pixel-based techniques which only use the layer pixel values, the object-based techniques can also use shape and context information of a scene texture. These extra degrees of freedom provided by the objects will aid the identification of visible textures. In this article, we present a procedure for object-based automatic classifica...

M A R K E . B R I G H A M , * , † D E N N I S A . W E N T Z , ‡ G E O R G E R . A I K E N , § A N D D A V I D P . K R A B B E N H O F T | U.S. Geological Survey, 2280 Woodale Drive, Mounds View, Minnesota 55112, U.S. Geological Survey, 2130 S.W. Fifth Avenue, Portland, Oregon 97201, U.S. Geological Survey, 3215 Marine Street, Suite E-127, Boulder, Colorado 80303, and U.S. Geological Survey, 850...

Identification of the geological facies and their distribution from seismic and other available geological information is important during the early stage of reservoir development (e.g. decision on initial well locations). Traditionally, this is done by manually inspecting the signatures of the seismic attribute maps, which is very time-consuming. This paper proposes an application of the Expec...

Geology is a complex, semantically rich domain involving the interpretation of geological maps as external visualizations. Geological maps are complex in particular because 3dimensional features must be inferred from 2-dimensional representations depicted by differing line types and weights. Modeling building, as an internal mental activity, is also required in order to achieve deep understandi...

The study of past forest change provides a necessary historical context for evaluating the outcome of human-induced climate change and biological invasions. Retrospective analyses based on fossil and genetic data greatly advance our understanding of tree colonization, adaptation, and extinction in response to past climatic change. For instance, these analyses reveal cryptic refugia near or nort...

Doubly polished thin sections, originally prepared for fluid inclusion studies, present great advantages in the study of microfossils in volcanic rocks. Better visibility and light conditions, variation in thickness of the thin sections and the possibility to combine fluid inclusion studies with microfossil studies lead to a wide range of advantages over ordinary thin sections. This includes th...

We report on the second and final year of geological mapping in the Nakina area, conducted under the Atlin Targeted Geoscience Initiative (TGI). Principal aims of the TGI are to create a legacy of high quality geoscience data that will stimulate geological resource exploration, and regional economic development (see Atlin TGI Part I). Geological maps produced as part of the project portray base...

The usefulness of online geological maps is hindered by linguistic barriers. Multilingual geoscience thesauri alleviate linguistic barriers of geological maps. However, the benefits of multilingual geoscience thesauri for online geological maps are less studied. In this regard, we developed a multilingual thesaurus of geological time scale (GTS) to alleviate linguistic barriers of GTS records a...