BEACH TRENCH SURVEY FOR 3-D STRUCTURE OF SAND GRAVEL BEACH PROTECTED BY DETACHED BREAKWATERS

2021 ◽  
Vol 77 (2) ◽  
pp. I_1021-I_1026
Author(s):  
Shinji SATO ◽  
Minari KOTSUKA
Keyword(s):  
Gravel Beach

RESPONSE CHARACTERISTICS OF GRAVEL BEACH FROM THE VIEWPOINT OF SHALLOW WATER WAVES AND MOVEMENT OF GRAVELS

2020 ◽  
Vol 76 (2) ◽  
pp. I_565-I_570
Author(s):  
Shin-ichi AOKI ◽  
Tomoki HAMANO ◽  
Taishi NAKAYAMA ◽  
Eiichi OKETANI ◽  
Takahiro HIRAMATSU ◽  
...  
Keyword(s):  
Shallow Water ◽  
Water Waves ◽  
Shallow Water Waves ◽  
Response Characteristics ◽  
Gravel Beach

STUDY ON TOPOGRAPHIC CHANGE OF GRAVEL BEACH AND THE CONDITION OF OCCURRENCE OF LARGE EROSION

2019 ◽  
Vol 75 (2) ◽  
pp. I_553-I_558
Author(s):  
Teruaki UTSUMI ◽  
Shin-ichi AOKI ◽  
Tomoki HAMANO ◽  
Taishi NAKAYAMA
Keyword(s):  
Gravel Beach

scholarly journals High Pressure Injection of Chemicals in a Gravel Beach

Processes ◽  
2019 ◽  
Vol 7 (8) ◽  
pp. 525
Author(s):  
Geng ◽  
Abdollahi-Nasab ◽  
An ◽  
Chen ◽  
Lee ◽  
...  
Keyword(s):  
High Pressure ◽  
Flow Rate ◽  
Lithium Bromide ◽  
Injection Pressure ◽  
Tidal Range ◽  
Application Of Surfactants ◽  
Pressure Injection ◽  
Oil Biodegradation ◽  
High Pressure Injection ◽  
Gravel Beach

The remediation of beaches contaminated with oil includes the application of surfactants and/or the application of amendments to enhance oil biodegradation (i.e., bioremediation). This study focused on evaluating the practicability of the high pressure injection (HPI) of dissolved chemicals into the subsurface of a lentic Alaskan beach subjected to a 5 m tidal range. A conservative tracer, lithium, in a lithium bromide (LiBr) solution, was injected into the beach at 1.0 m depth near the mid-tide line. The flow rate was varied between 1.0 and 1.5 L/min, and the resulting injection pressure varied between 3 m and 6 m of water. The concentration of the injected tracer was measured from four surrounding monitoring wells at multiple depths. The HPI associated with a flow rate of 1.5 L/min resulted in a Darcy flux in the cross-shore direction at 1.15 × 10−5 m/s compared to that of 7.5 × 10−6 m/s under normal conditions. The HPI, thus, enhanced the hydraulic conveyance of the beach. The results revealed that the tracer plume dispersed an area of ~12 m2 within 24 h. These results suggest that deep injection of solutions into a gravel beach is a viable approach for remediating beaches.

scholarly journals Geomorphology, beach classification and seasonal morphodynamic transition of a Mediterranean gravel beach (Sardinia, Gulf of Cagliari)

2019 ◽  
Vol 15 (2) ◽  
pp. 165-176 ◽  
Author(s):  
Carla Buosi ◽  
Angelo Ibba ◽  
Marinella Passarella ◽  
Marco Porta ◽  
Andrea Ruju ◽  
...  
Keyword(s):  
Gravel Beach

Field Observations of Step Dynamics on a Macrotidal Gravel Beach

2007 ◽  
Author(s):  
Daniel Buscombe ◽  
Martin J. Austin ◽  
Gerhard Masselink
Keyword(s):  
Field Observations ◽  
Step Dynamics ◽  
Gravel Beach
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