scholarly journals Bedrock-alluvial streams with knickpoint and plunge pool that migrate upstream with permanent form

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Li Zhang ◽  
Toshiki Iwasaki ◽  
Tiejian Li ◽  
Xudong Fu ◽  
Guangqian Wang ◽  
...  
2017 ◽  
Vol 122 (11) ◽  
pp. 2079-2104 ◽  
Author(s):  
Joel S. Scheingross ◽  
Michael P. Lamb

1984 ◽  
Vol 53 (2) ◽  
pp. 365-368 ◽  
Author(s):  
Thomas Guarnieri ◽  
Will C. Sealy ◽  
Lawrence D. German ◽  
John J. Gallagher

Psych ◽  
2021 ◽  
Vol 3 (3) ◽  
pp. 269-278
Author(s):  
İlknur Kıvanç Altunay ◽  
Sibel Mercan ◽  
Ezgi Özkur

Tattooing is a permanent form of body art applied onto the skin with a decorative ink, and it has been practiced from antiquity until today. The number of tattooed people is steadily increasing as tattoos have become popular all over the world, especially in Western countries. Tattoos display distinctive designs and images, from protective totems and tribal symbols to the names of loved or lost persons or strange figures, which are used as a means of self-expression. They are worn on the skin as a lifelong commitment, and everyone has their own reasons to become tattooed, whether they be simply esthetic or a proclamation of group identity. Tattoos are representations of one’s feelings, unconscious conflicts, and inner life onto the skin. The skin plays a major role in this representation and is involved in different ways in this process. This article aims to review the historical and psychoanalytical aspects of tattoos, the reasons for and against tattooing, medical and dermatological implications of the practice, and emotional reflections from a psychodermatological perspective.


Geology ◽  
2021 ◽  
Author(s):  
Joel S. Scheingross ◽  
Michael P. Lamb

Waterfall plunge pools experience cycles of sediment aggradation and scour that modulate bedrock erosion, habitat availability, and hazard potential. We calculate sediment flux divergence to evaluate the conditions under which pools deposit and scour sediment by comparing the sediment transport capacities of waterfall plunge pools (Qsc_pool) and their adjacent river reaches (Qsc_river). Results show that pools fill with sediment at low river discharge because the waterfall jet is not strong enough to transport the supplied sediment load out of the pool. As discharge increases, the waterfall jet strengthens, allowing pools to transport sediment at greater rates than in adjacent river reaches. This causes sediment scour from pools and bar building at the downstream pool boundary. While pools may be partially emptied of sediment at modest discharge, floods with recurrence intervals >10 yr are typically required for pools to scour to bedrock. These results allow new constraints on paleodischarge estimates made from sediment deposited in plunge pool bars and suggest that bedrock erosion at waterfalls with plunge pools occurs during larger floods than in river reaches lacking waterfalls.


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