Sign In
Ask Question
Biology
Kara Huynh
30 August, 15:31
Name 3 things that affect long shore currents
+1
Answers (
1
)
Alan Grant
30 August, 16:48
0
Diagram demonstrating longshore drift
1=beach
2=sea
3=longshore current direction
4=incoming waves
5=swash
6=backwashLongshore drift is a geological process that consists of the transportation of sediments (clay, silt, sand and shingle) along a coast parallel to the shoreline, which is dependent on oblique incoming wind direction. Oblique incoming wind squeezes water along the coast, and so generates a water current which moves parallel to the coast. Longshore drift is simply the sediment moved by the longshore current. This current and sediment movement occurs within the surf zone.
Beach sand is also moved on such oblique wind days, due to the swash and backwash of water on the beach. Breaking surf sends water up the beach (swash) at an oblique angle and gravity then drains the water straight downslope (backwash) perpendicular to the shoreline. Thus beach sand can move downbeach in a zig zag fashion many tens of meters per day. This process is called "beach drift" but some workers regard it as simply part of "longshore drift" because of the overall movement of sand parallel to the coast.
Longshore drift affects numerous sediment sizes as it works in slightly different ways depending on the sediment (e. g. the difference in long shore drift of sediments from a sandy beach to that of sediments from a shingle beach). Sand is largely affected by the oscillatory force of breaking waves, the motion of sediment due to the impact of breaking waves and bed shear from long shore current. Because shingle beaches are much steeper than sandy ones, plunging breakers are more likely to form, causing the majority of long shore transport to occur in the swash zone, due to a lack of an extended surf zone.
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Get an answer to your question ✅
“Name 3 things that affect long shore currents ...”
in 📙 Biology if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers
You Might be Interested in
How many bjork shiley valves have been implanted?
Answers (1)
The following steps describe how sedimentary rock forms at the bottom of a river. Which two steps involve erosion? 1. A large rock breaks down into sediment. 2. The water transports and deposits the sediments. 3.
Answers (1)
Which term best demonstrates when an organism is better adapted to the environment that they live in and are more likely to survive and reproduce? A) natural variation B) natural selection C) speciation D) living
Answers (1)
White gold is actually an alloy of three metals: 85% gold, 10% nickel and 5% zinc. Based on these concentrations, which metal is considered to be the solvent?
Answers (2)
Roundworms are Aceoelmates Pseudocoelomates Coelomates None of above
Answers (1)
New Questions in Biology
After replication, how much of each DNA molecule is composed of the original DNA
Answers (1)
Which substances must a green plant obtain from its environment to carryon photosynthesis"?
Answers (1)
What are 5 biotic and abiotic features of an eagle?
Answers (1)
A heme group contains four pyrrole rings, which are linked via methene (methine) bridges.
Answers (1)
The final enzymatic breakdown in the digestive processes of most proteins and carbohydrates are accomplished by: a. enzymes secreted in the stomach and pancreas b. enzymes secreted in the pancreas c. enzymes secreted in the brushborder d.
Answers (1)
Home
»
Biology
» Name 3 things that affect long shore currents
Sign In
Sign Up
Forgot Password?