CAS Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China.
School of Earth and Ocean Sciences, University of Victoria, Victoria, BC, V8W 2Y2, Canada.
Int J Biometeorol. 2018 Aug;62(8):1471-1488. doi: 10.1007/s00484-018-1546-y. Epub 2018 Jun 26.
In order to provide a reference for reconstructing the paleoclimate of the northeastern Indian Ocean, 36 airborne pollen samples were analyzed using methods for airborne pollen, and 26 surface water samples were analyzed using a lab method for surface water. We found that little pollen is airborne over the Indian Ocean in spring, but airborne pollen types and concentrations can help to deduce paleomonsoon strength and direction. The conclusions included the following: (1) Pollen in the sediment was transported mainly via ocean currents instead of the early summer or spring wind. (2) Airborne pollen types and concentrations are proportional to the wind speed and inversely proportional to the pollen distance transported and depend on whether the wind is from the land or from the sea. If the wind is from the land, the pollen concentration is proportional to the angle between the wind direction and the coastline. (3) The pollen concentration in the sample collected from a water depth of 30-45 m is higher than in the samples collected from a depth of 5 m. The pollen concentration and salinity are higher in the equatorial area than in the Northern Hemisphere.
为了为重建东北印度洋古气候提供参考，利用空中花粉分析方法分析了 36 个空中花粉样本，利用实验室方法分析了 26 个地表水样本。我们发现，印度洋春季的空中花粉很少，但空中花粉类型和浓度可以帮助推断古季风的强度和方向。结论包括以下几点：（1）沉积物中的花粉主要通过洋流输送，而不是初夏或春季的风。（2）空气中花粉的类型和浓度与风速成正比，与花粉输送距离成反比，取决于风向是来自陆地还是海洋。如果风来自陆地，花粉浓度与风向和海岸线之间的角度成正比。（3）在水深 30-45 米处采集的样本中的花粉浓度高于在水深 5 米处采集的样本。赤道地区的花粉浓度和盐度高于北半球。
