scholarly journals The lithified aeolian dune field adjacent to the Apollinaris sulci, Mars: Geological history and paleo-wind record

Icarus ◽  
2021 ◽  
pp. 114788
Author(s):  
Amanda R.G. Hunt ◽  
Mackenzie Day ◽  
Kenneth S. Edgett ◽  
Matthew Chojnacki
2000 ◽  
Vol 30 (3) ◽  
pp. 474-476 ◽  
Author(s):  
LUIZ JOSÉ TOMAZELLI ◽  
SÉRGIO REBELLO DILLENBURG ◽  
JORGE ALBERTO VILLWOCK

2018 ◽  
Vol 938 (8) ◽  
pp. 38-43
Author(s):  
S.A. Kotler ◽  
I.D. Zolnikov ◽  
D.V. Pchelnikov

The types of geological and geomorphological structure of the Katun valley are distinguished in the work. For this, a method of geoinformation mapping using morphometric indicators of the valley’s width and meandering of the channel was developed. The morphometric parameter of the valley’s width was calculated as the total area of terraces. As the morphometric parameters of the channel’s meandering, the angles of the river segments’ deviation relative to each other were calculated. Conjugated analysis of these morphometric indicators enabled identifying 18 morphotypes. These morphotypes according to the geological and geomorphological structure of the valley were combined into 4 classes. Separation of the Katun valley in certain classes and morphotypes is due to the different geological history of these sites during the Quaternary period. The most important reasons predetermining the modern variety of geological and geomorphological types of the valley are neotectonic movements and exogenous phenomena (glaciers, dam lakes, landslides, etc.) naturally localized in the space from the upstream of the river to its exit into the foothills. The developed method can be applied for quantitative morphometric classification of the mountain rivers’ valleys in other regions.


2016 ◽  
Author(s):  
Celine Martin ◽  
◽  
George E. Harlow ◽  
George E. Harlow ◽  
George E. Harlow ◽  
...  

2019 ◽  
Author(s):  
Mackenzie D. Day ◽  
◽  
Dominique Stumbaugh ◽  
Kenneth S. Edgett
Keyword(s):  

2019 ◽  
Author(s):  
Henry D. Kramer ◽  
◽  
Colton W. Byers ◽  
Gregory S. Baker ◽  
Paul Baldauf ◽  
...  
Keyword(s):  

Oceanology ◽  
2019 ◽  
Vol 59 (5) ◽  
pp. 771-776
Author(s):  
A. A. Schreider ◽  
A. E. Sazhneva ◽  
P. Varga ◽  
C. Denis

Water ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1269
Author(s):  
George Alexandrakis ◽  
Stelios Petrakis ◽  
Nikolaos A. Kampanis

Understanding the processes that govern the transformation of the landscape through time is essential for exploring the evolution of a coastal area. Coastal landscapes are dynamic sites, with their evolution strongly linked with waves and sea level variations. Geomorphological features in the coastal area, such as beachrock formations and dune fields, can function as indicators of the coastal landscape evolution through time. However, our knowledge of the chronological framework of coastal deposits in the Aegean coasts is limited. Optically Stimulated Luminescence dating techniques are deemed to be very promising in direct dating of the coastal sediments, especially when they are linked with archaeological evidence. The dating of the sediments from different sediment core depths, determined by the method of luminosity, allowed us to calculate the rate of sediment deposition over time. More recent coastal evolution and stability were examined from 1945 to 2020 with the use of aerial photographs and satellite images. This paper presents the 6000 ka evolution of a coastal landscape based on geomorphological, archaeological, and radio-chronological data. Based on the results, the early stages of the Ammoudara beach dune field appears to have been formed ~9.0–9.6 ka BP, while the OSL ages from 6 m depth represented the timing of its stabilization (OSL ages ~5–6 ka). This indicates that the dune field appears to already have been formed long before the Bronze Age (5–10 ka BP). It became stabilized with only localized episodes of dune reactivation occurring. In contrast, while high coastal erosion rates were calculated for modern times.


CATENA ◽  
2021 ◽  
Vol 201 ◽  
pp. 105193
Author(s):  
Luigi Borrelli ◽  
Loredana Antronico ◽  
Emilia Le Pera ◽  
Barbara Pisano ◽  
Marino Sorriso-Valvo

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