A Large Submarine Sinkhole Group was Discovered on Ganquan Platform in Xisha Sea Area of South China Sea
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图 1 研究区位置(a), 甘泉海台溶洞群分布特征(b); 溶洞地形特征(c, e, g)；溶洞地形剖面(d, f, h)
图c，e，g中蓝线为地形剖面位置. c. 2号溶洞地形特征；e. 13号溶洞地形特征；g. 18号溶洞地形特征；d. 2号溶洞地形剖面；f.13号溶洞地形剖面；h. 18号溶洞地形剖面
Fig. 1. Location of the study area(a); distribution characteristics of submarine sinkholes on the Ganquan carbonate platform(b); bathymetry maps (c, e, g); bathymetric profilescross sections of submarine sinkhole (d, f, h)
图 2 “2号”溶洞洞内景观图
a.石笋；b.洞壁岩脉；c.洞壁溶蚀沟槽；d.海洋雪；e.鳐鱼；f.冷水珊瑚
Fig. 2. Images of the inner part of the sinkhole No. 2
表 1 甘泉海台溶洞群的地形参数
Table 1. Geomorphologic parameters of the sinkholes on the Ganquan platform
编号 洞顶水深（m） 溶洞深度（m） 平均直径（m） 编号 洞顶水深（m） 溶洞深度（m） 平均直径（m） 1 724 54 572 20 571 56 502 2 642 241 449 21 595 81 574 3 647 46 330 22 551 5.5 172 4 591 64 441 23 597 8.5 213 5 593 90 566 24 559 3.8 267 6 598 26 465 25 1 267 15 321 7 597 54 435 26 1 242 12 338 8 586 86 459 27 821 42 264 9 586 45 252 28 776 22 207 10 573 89 501 29 584 3 268 11 599 21 320 30 590 6 214 12 613 78 339 31 593 3 148 13 609 69 468 32 601 3 180 14 580 120 487 33 704 5 144 15 582 25 416 34 794 5 145 16 580 19 519 35 1 101 14 95 17 572 22 333 36 1 089 26 66 18 571 79 550 37 1 143 16 76 19 561 14 293 
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