نتایج جستجو برای: geological

تعداد نتایج: 24790  

2011
Mikhail A. Ivanov James W. Head

The surface area of Venus ( 460 10 km) is 90% of that of the Earth. Using Magellan radar image and altimetry data, supplemented by Venera-15/16 radar images, we compiled a global geologic map of Venus at a scale of 1:10 M. We outline the history of geological mapping of the Earth and planets to illustrate the importance of utilizing the dual stratigraphic classification approach to geological m...

2008
Yamine Aït Ameur Nabil Belaid Mohammed Bennis Olivier Corby Rose Dieng Jérémie Doucy Priscille Durville Chimène Fankam Fabien L. Gandon Alain Giboin Patrick Giroux Sandrine Grataloup Bruno Grilhères Florian Husson Stéphane Jean Joel Langlois Phuc-Hiep Luong Laura S. Mastella Olivier Morel Michel Perrin Guy Pierra Jean-François Rainaud Idir Aït-Sadoune Eric Sardet Francois Tertre João Francisco Valiati

This paper describes a service-oriented architecture for accessing resources through semantically designed portals called hubs. The services are dedicated to: (a) ontology management, (b) annotation generation from texts based on linguistic or machine learning techniques, (c) persistent storage of ontologies and metadata, and (d) semantic search in annotation bases or ontological databases. The...

2008
Steven J. Davis Andreas Mulch Alan R. Carroll Travis W. Horton

official positions of the Society. citizenship, gender, religion, or political viewpoint. Opinions presented in this publication do not reflect presentation of diverse opinions and positions by scientists worldwide, regardless of their race, includes a reference to the article's full citation. GSA provides this and other forums for the the abstracts only of their articles on their own or their ...

2008
Michael L. Wells Thomas D. Hoisch

official positions of the Society. citizenship, gender, religion, or political viewpoint. Opinions presented in this publication do not reflect presentation of diverse opinions and positions by scientists worldwide, regardless of their race, includes a reference to the article's full citation. GSA provides this and other forums for the the abstracts only of their articles on their own or their ...

2011
Brian Wernicke

Recently published thermochronological and paleoelevation studies in the Grand Canyon region, combined with sedimentary provenance data in both the coastal and interior portions of the North American Cordillera, place important new constraints on the paleohydrological evolution of the southwestern United States. Review and synthesis of these data lead to an interpretation where incision of a la...

Journal: :Science 2009
A W Grabau

Cin-Ty Lee is a Renaissance man — the breadth of his interests is astonishing, not even considering his books, articles and paintings focused on birds. Cin-Ty is making a major impact in our understanding of how the Earth works; he has written on topics as diverse as the origin and evolution of the continents, the oxygen fugacity of the mantle through time, chemical fluxes between the solid Ear...

2001
Wolfdietrich SKALA Gudrun HEYN Brigitte RICHTER

Communication in geology is characterized by very many expressions, used in texts and lectures. Among these, nonverbal terms are much more important than in other sciences. Informations rarely reflect pure facts, rather they are expressions and results of a complex process of knowledge formation. In a geologic map for example, the structure of symbols illustrates the process of knowledge transf...

1999
Fabio Boschetti Louis Moresi Kim Covil

We compare IGA to traditional numerical inversion on a geological application. We show that ‘a priori’ information and expert knowledge can overcome lack of accurate data and help convergence towards a satisfactory solution.

1998
Ronald Greeley Robert Sullivan James Klemaszewski Kim Homan Robert T. Pappalardo Joseph Veverka Beth E. Clark Kenneth P. Klaasen Michael Belton Erik Asphaug Michael H. Carr Gerhard Neukum Tilmann Denk Clark R. Chapman Carl B. Pilcher

recently than others; Europa could experience current cryovolcanic and tectonic activity. Global-scale patterns of tectonic Images of Europa from the Galileo spacecraft show a surface features suggest deformation resulting from non-synchronous with a complex history involving tectonic deformation, impact rotation of Europa around Jupiter. Some regions of the lithocratering, and possible emplace...

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