菲律宾海底层水体在1990s—2010s之间的暖化*
作者简介:黄财京(1991—), 男, 广东省揭阳市人, 硕士研究生, 研究方向是菲律宾海深层水团与环流特征研究。E-mail:huangcaijing15 @mails.ucas.ac.cn
收稿日期: 2018-01-30
网络出版日期: 2018-12-24
基金资助
中国科学院战略性先导科技专项(XDB06020102、XDB06020101);国家自然科学基金项目(41676015、41776036、41576006;三亚市院地科技合作项目(2015YD02)
Bottom-water warming in the Philippine Sea between 1990s and 2010s
Received date: 2018-01-30
Online published: 2018-12-24
Supported by
Foundation item: Strategic Priority Research Program of the Chinese Academy of Sciences (XDB06020102, XDB06020101);National Natural Science Foundation of China (41676015, 41776036, 41576006);Sanya and Chinese Academy of Sciences Cooperation Project(2015YD02)
Copyright
跨菲律宾海的重复断面水文观测揭示: 菲律宾海底层水体从1990s到2010s增暖了0.002~0.01℃。在西马里亚纳海盆和四国海盆, 较冷的下层绕极深层水(Lower Circumpolar Deep Water, LCDW)减少, 较暖的LCDW增加; 而在菲律宾海盆, 较冷的变性LCDW减少, 较暖的变性LCDW增加。菲律宾海盆4000dbar的热通量是0.0413W·m-2, 而西马里亚纳海盆和四国海盆的是0.0221W·m-2。菲律宾海盆由于深层海洋热膨胀引起的局地海平面上升速度是0.0621mm·yr-1, 而西马里亚纳海盆和四国海盆的是0.0333mm·yr-1。
黄财京 , 谢强 , 陈举 , 舒业强 , 陈玲舫 . 菲律宾海底层水体在1990s—2010s之间的暖化*[J]. 热带海洋学报, 2018 , 37(6) : 26 -32 . DOI: 10.11978/2018015
Repeated trans-Philippine-Sea hydrographic observations reveal that the bottom water in the Philippine Sea has warmed up by about 0.002~0.01℃ between 1990s and 2010s. In the West Mariana Basin and the Shikoku Basin, the colder portion of the Lower Circumpolar Deep Water (LCDW) decreased while the warmer portion increased. In the Philippine Basin, the colder portion of modified LCDW decreased while the warmer portion increased. The heat flux at the 4000-dbar isobath is 0.0413W·m-2 in the Philippine Basin and 0.0221W·m-2 in the West Mariana Basin and the Shikoku Basin. The sea level rise is 0.0621mm·yr-1 in the Philippine Basin and 0.0333mm·yr-1 in the West Mariana Basin and the Shikoku Basin due to deep ocean thermal expansion.
Key words: warming; bottom water; Philippine Sea
Fig. 1 Topography in the Philippine Sea and observation stations along transects P08 and P09. |
Fig. 2 Difference of potential temperature between 1994 and 2010 along transect P09. |
Fig. 3 Difference of potential temperature between 1996 and 2016 along transect P08. |
Fig. 4 (a) Difference of areas between 2016 and 1996 along transect P08; (b) Integrated difference of areas from the lowest temperature along transect P08图4 P08断面2016年和1996年的面积差(a)以及P08断面从最低温度开始累加的面积差(b) |
Fig. 5 (a) Difference of areas between 2010 and 1994 along transect P09; (b) Integrated difference of areas from the lowest temperature along transect P09图5 P09断面2010年和1994年的面积差(a)以及P09断面从最低温度开始累加的面积差(b) |
Fig. 6 Mean time variation rate of potential temperature, dθ/dt, along transects P08 (a) and P09 (b)图6 P08断面(a)和P09(b)断面平均的位温变化速率dθ/dt。 |
The authors have declared that no competing interests exist.
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