نتایج جستجو برای: geomorphic index

تعداد نتایج: 398158  

2015
Timothy A. Goudge John F. Mustard James W. Head Caleb I. Fassett Sandra M. Wiseman

We present results from geomorphic mapping and visible to near-infrared spectral analyses of the Jezero crater paleolake basin and its associated watershed. The goal of this study is to understand the provenance of the sedimentary deposits within this open-basin lake using a source-to-sink approach. Two fan deposits located within the basin have distinct visible to near-infrared mineralogic sig...

2006
S. A. Wilson A. D. Howard J. M. Moore

Introduction: The geology of Terby Crater (28S, 287W), located on the northern rim of Hellas impact basin on Mars, is documented through geomorphic and stratigraphic analyses using all currently released visible and thermal infrared image data and topographic information. This large (D=164km), Noachian-aged [1] crater has a suite of geomorphic units [2] and landforms including massive troughs a...

2017
J. Anthony Stallins Dov Corenblit

Article history: Received 9 March 2017 Received in revised form 11 September 2017 Accepted 11 September 2017 Available online xxxx Ecology and geomorphology recognize the dynamic aspects of resistance and resilience. However, formal resilience theory in ecology has tended to deemphasize the geomorphic habitat template. Conversely, landscape sensitivity and state-and-transition models in geomorp...

2015
Rachel Przeslawski Belinda Alvarez Johnathan Kool Tom Bridge M. Julian Caley Scott Nichol James Bell

Marine reserves are becoming progressively more important as anthropogenic impacts continue to increase, but we have little baseline information for most marine environments. In this study, we focus on the Oceanic Shoals Commonwealth Marine Reserve (CMR) in northern Australia, particularly the carbonate banks and terraces of the Sahul Shelf and Van Diemen Rise which have been designated a Key E...

The Kordkanlo Basin, one of the Atrak sub-basins, located in the northeastern of the Ghoochan city, the Khorasan Razavi Province; is situated in Kopet Dagh geologic zone. The overall objective of this study is to evaluate the morphotectonic effects on the drainage network of the basin, using morphometric indicators. In this research, morphometric quantitative indicators of hypsometric integral ...

2016
Brian Helms Jason Zink David Werneke Tom Hess Greg Jennings

Regional data needed for effective stream restoration include hydraulic geometry relationships (i.e., regional curves) and reference channel morphology parameters. Increasingly ecological conditions are being considered when designing, implementing, and assessing restoration efforts. We provide morphology relationships and associated ecological endpoint curves for reference streams in the Alaba...

2009
S William Platts

GEOMORPHIC AND AQUATIC CONDITIONS INFLUENCING SALMONIDS AND STREAM CLASSIFICATION with application to ecosystem classification

2008
Hugh Shipman

Acknowledgments T he Nearshore Science Team (NST) of the Puget Sound Nearshore Project recognized in early discussions the need for a geomorphic framework to guide shoreline restoration planning. These individuals clarified the rationale and the purpose for this document and provided valuable comments on early drafts of the report. This project also benefitted greatly from the input of Washingt...

بیات, امید, خادمی, حسین , کریم زاده, حمیدرضا ,

Clay mineralogy of paleosols provides more information about Quaternary climatic changes and paleoenvironmental conditions. Clay minerals of an alluvial fan in eastern Isfahan were studied, using x-ray diffraction analysis. Studied paleosols are located on old Qf1 and Qf2 geomorphic surfaces. Qf1 geomorphic surface is older and topographically higher than Qf2. The results of clay mineralogy sho...

2009
Dov Corenblit Johannes Steiger

Earth surface processes and landforms may have coadjusted with plant morphology, biomechanics and life-history. We suggest that the colonization of land by plants at the early Silurian, and their propagation inside continents, represent critical phases of the coupling between geomorphic and biological processes on the Earth at a global scale. The consideration of this coupling involving geomorp...

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