نتایج جستجو برای: geomorphologic

تعداد نتایج: 559  

Journal: :Icarus 2021

In this study we address the question of whether Tharsis rise that occupies ~25 % surface area Mars was once covered by an ice cap, and sudden ice-cap melting responsible for catastrophic development Late Hesperian (3.5-3.6 Ga) circum-Tharsis giant (>1000s km in length) outflow channels. To achieve goal, conducted geomorphologic mapping across Oudemans crater basin (~125 diameter) at elevations...

ژورنال: آبخیزداری ایران 2020

The study area is located north of Urmia lake and Tasuj plain. The average height of 1700m and average rainfall in the area about 363mm. The average annual temperature 10/65°C. Investigations on the surface penetration of flood deposits are important for the implementation of artificial recharge aquifers. In this study, soil permeability changes from Plain to lake were measured using double c...

Journal: :Applied sciences 2023

The effect of artificial island on the geomorphologic processes in coastal area under coupled hydrodynamics, wave, and sediment transport system is a complicated multi-scale problem. Studying these dynamic will suggest how ecological restoration should be conducted. In this study, unified, unstructured, gridded model topographic evolution were adopted. Based field observations water depth, velo...

Journal: :Journal of Maps 2021

Recent subaerial volcanism at El Hierro Island (Canary Islands, Spain) consists of monogenetic volcanic fields. This generated cinder cones, tephra air-fall deposits, and lava flows. The flows reach several kilometres in length extending through shore platforms and, sometimes, penetrating under the sea level. landforms convert it into a natural laboratory for topographic morphometric modelling ...

Journal: :Journal of Maps 2021

Geologic maps are foundational products for natural hazard assessments but developing them submarine areas is challenging due to a lack of physical access the study area. In response, geomorphologic used provide geologic context and spatial information on landforms related geo-hazards risk management. These generated from remotely sensed data, e.g. digital elevation models (DEMs), which introdu...

Journal: :Water 2021

During the breakup of river ice covers, a greater potential for erosion occurs due to rising discharge and moving highly dynamic waves that form upon ice-jam release. Consequently, suspended-sediment concentrations can increase sharply peak before arrival flow. Large spikes in sediment occasionally occur during passage sharp resulting from releases upstream jams ensuing runs. This is important,...

Journal: :Remote Sensing 2023

Low-frequency debris flows are characterized by strong concealment, high potential danger, and difficulty achieving an early warning; hence identification of low-frequency flow gullies is crucial to mitigation. Here, system for along the traffic arteries in Chuanxi Plateau proposed based on stability calculation colluvium deposits a hollow region (CDH) quantitative roundness analysis stones dep...

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