这些海底峡谷的深度可达11千米。
海底峡谷，是由于地壳板块运动而形成的一种地质构造。
Submarine canyon is a geological structure that formed by plate movement in the crust.
向上变细的水道可以出现在好多种环境中，从海底峡谷到冲积扇。
Upward-fining channels may occur in a wide range of environments from submarine canyon to alluvial fan.
研究区内广泛分布的气烟囱构造，暗示了含气流体的垂向运移和渗漏，可能促进了海底峡谷群的进一步演化。
In the study area, the widely distributed gas chimneys, implied the vertical migrations and leakages of gas-bearing fluids, which might contribute to the evolution of submarine canyons.
第四纪以来珠江水系携带的大量沉积物经由陆架进入到陆坡区域，为海底峡谷群的发育和演化提供了充足的沉积物来源。
Since Quaternary, abundant sediments from the Pearl River in the north would be transported via shelf to slope and basinfloor, supplying the sufficient sediments for slope-confined submarine canyons.
第四纪以来珠江水系携带的大量沉积物经由陆架进入到陆坡区域，为海底峡谷群的发育和演化提供了充足的沉积物来源。
Since Quaternary, abundant sediments from the Pearl River in the north would be transported via shelf to slope and basinfloor, supplying the sufficient sediments for slope-confined submarine canyons.
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