(i) Wave-cut platform in Cheung Chau(refer to attachment 3)
Cheung Chau’s wave-cut platform is located in the Nam Tan Wan. It is formed by the wave erosion in the water moving from the south-east. “A wave cut platform can be found below the human head rock. A line of weakness is usually found at headlands. Wave energy is concentrated at the line of weakness (joints, fault lines, etc.) The cracks widen as wave erosion advances. A notch will be formed. After prolonged wave erosion the notch deepens. The overhanging walls collapse to form sea cliff. With further erosion the wall retreats towards the land and the area under the cliff widens. Thus a wave cut platform is formed. The platform is exposed.” Sources:(http://www.qc.edu.hk/it-school/homepage/geog/cheung%20chau/web/phy.htm)
(ii) Wave-cut platform in Ping Chau(refer to attachment 4)
The wave-cut platform in Ping Chau is located in the Kang Lau Shek to Lan Kwo Shui. They are at the southeastern tip of Ping Chau. And Lan Kwo Shui is in the west of Kang Lau Shek. The wave-cut platforms are measured about a hundred meters in length, the largest and the most famous in Hong Kong. It extends more than 33m inwards from the sea. As the sea is rough in the south and south west, so the wave erosion is active in the Kang Lau Shek and Lan Kwo Shui. Erosional landforms are formed there – wave-cut platform.(refer to attachment 3)
Is it necessary to describe their formation? Your focusing question asks for comparison of the wave-cut platforms in these 2 places.
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