DENDRO-GEOMORPHOLOGICAL ANALYSIS OF THE SLATE CREEK LANDSLIDE, ALASKA

2020 ◽  
Author(s):  
Mackenzie E Young ◽  
◽  
Daniel Mann ◽  
Ben Gaglioti ◽  
Margaret Darrow
2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Consuele Morrone ◽  
Fabio Ietto

AbstractThis contribution focuses on a multidisciplinary research showing the geomorphological evolution and the beach sand composition of the Tyrrhenian shoreline between Capo Suvero promontory and Gizzeria Lido village (Calabria, southern Italy). The aim of the geomorphological analysis was to reconstruct the evolutionary shoreline stages and the present-day sedimentary dynamics along approximately 6 km of coastline. The results show a general trend of beach nourishment during the period 1870–2019. In this period, the maximum shoreline accretion value was estimated equal to + 900 m with an average rate of + 6.5 m/yr. Moreover, although the general evolutionary trend is characterized by a remarkable accretion, the geomorphological analysis highlighted continuous modifications of the beaches including erosion processes. The continuous beach modifications occurred mainly between 1953 and 1983 and were caused mainly by human activity in the coastal areas and inside the hydrographic basins. The beach sand composition allowed an assessment of the mainland petrological sedimentary province and its dispersal pattern of the present coastal dynamics. Petrographic analysis of beach sands identified a lithic metamorphi-clastic petrofacies, characterized by abundant fine-grained schists and phyllites sourced from the crystalline terrains of the Coastal Range front and carried by the Savuto River. The sand is also composed of a mineral assemblage comparable to that of the Amato River provenance. In terms of framework detrital constituents of QFL (quartz:feldspars:aphanitic lithic fragments) and of essential extraclasts, such as granitoid:sedimentary:metamorphic phaneritic rock fragments (Rg:Rs:Rm), sand maturity changes moderately from backshore to shoreface, suggesting that transport processes had a little effect on sand maturity. Moreover, the modal composition suggests that the Capo Suvero promontory does not obstruct longshore sand transport from the north. Indeed, sands displaced by currents driven by storm-wave activity bypass this rocky headland.


2020 ◽  
Author(s):  
Pietro Matteoni ◽  
Giuseppe Mitri ◽  
Valerio Poggiali ◽  
Marco Mastrogiuseppe

2018 ◽  
Author(s):  
Bazar Atashevich Eskozha ◽  
Marat Utegenovich Aimagambetov ◽  
Marina Petrovna Brichikova ◽  
Dana Serikovna Shaikhina

2017 ◽  
Vol 18 (64) ◽  
pp. 426-443
Author(s):  
Alan Silveira ◽  
Patrícia Borges Silveira ◽  
Cenira Maria Lupinacci

2017 ◽  
Vol 36 (3) ◽  
pp. 111-123 ◽  
Author(s):  
Pier Luigi Dall’Aglio ◽  
Mauro de Donatis ◽  
Carlotta Franceschelli ◽  
Cristiano Guerra ◽  
Veronica Guerra ◽  
...  

Abstract The geomorphological analysis of historically urbanized areas is the best scientific way to understand how the extant geomorphological factors conditioned urbanization. It also provides a baseline to enable comparisons to be made with the modern environment. This paper considers four urbanized historical sites on the Adriatic coast (Italy) that owe their urban development to particular geomorphological and environmental conditions that were modified over the centuries from the Roman age to the present day. The focus here is on the evolution of the shoreline and associated geomorphic variables (streambeds and river mouths migration). These factors are fundamental for determining the development of a city, both as basic boundary elements – therefore including defence and protection – and also for the development of harbours.


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