reef edge scarp 1-3 m vertical or high angle drop off from the upper edge of the reef top to upper terrace surface; usually on the lagoon reef slope.

• 礁缘斜坡从礁顶的上缘到平台表面上方，垂直线约1-3公尺或以高角度遽降的区域；通常在潟湖礁石斜坡上。