There is a need to automate terrain feature mapping so that to make the process more objective and less time consuming by using proper feature extraction techniques. The objective of this study was the use of object-oriented image analysis methods for the automatic extraction of physiographic regions and alluvial fan landform units. The study area was located in Nevada, USA. The data used inclu...

Local surface water and stormflow were infiltrated intermittently from a 40-ha basin between September 2003 and September 2007 to determine the feasibility of recharging alluvial aquifers pumped for public supply, near Stockton, California. Infiltration of water produced a pressure response that propagated through unconsolidated alluvial-fan deposits to 125 m below land surface (bls) in 5 d and...

Introduction: We have studied a terraced fan deposit centered at 15.0° S, 299.7° E within one of the troughs of Coprates Catena in order to investigate the role that water may have played in its formation. Only a handful of these unique terraced fan deposits have been identified on Mars [1-4], although their small sizes make them difficult to identify with the current data sets. The few fan dep...

The Muğla Polje (SW Turkey), which formed as a result of the Pleistocene activity Fault, is an example rift basin with two alluvial fans (the Fan, 3.33 km2 and Düğerek 1.26 km2). This study focuses on development these through evaluation aerial photos, Google-Earth images, measurements sedimentary sections, lithological examinations, mineralogical discriminations, in situ observations. Fracture...

The history of rivers on Mars is an important constraint Martian climate evolution. timing relatively young, alluvial fan-forming especially important, as Mars' Amazonian atmosphere thought to have been too thin consistently support surface liquid water. Previous regional studies suggested that fans formed primarily between the Early Hesperian and Amazonian. In this study, we describe how a com...

introduction interaction between internal and external processes of the earth during time plays an important role in formation and landforms transformation. we can identify course of their process changes with landform survey. in the middle parts of iran, there are several geomorphologic evidence of arid and rainy climate changes. playaes and lakes or generally internal holes had an important r...