中国科学院海洋研究所生态学研究中心成立

为适应海洋科学的发展和当前科技体制改革的需要,中国科学院海洋研究所“海洋生态学研究中心”于5月8日正式成立。 资源与环境是当前地球科学研究的两大课题。占全球面积71％强的海洋是地圈、水圈、生物圈的主体组分,在调节全球气候与提供可再生资源中起着举足轻重的作用。这种作用的机制,很大程度上就在于海洋的生态过程。因而,海洋生态学已成为90年代海洋     

西太平洋狗母鱼科鱼类种类多样性的研究

整理记述了西太平洋狗母鱼科Saurida、Synodus、Trachinocephalus 三属鱼类,给出了属以及主要种类的检索表,并报告了各个种的地理分布区。在此基础上,讨论了西太平洋狗母鱼科鱼类生物多样性特征、动物地理学特点及部分名称订正和资源与渔业上的意义。     

莱州湾,黄河口水域春季近岸渔获生物多样性特征的调查研究

本文以1998年莱州湾与黄河口水域的定*置网具春季渔获为基础,记述了该海区出现的61种渔获名录,渔业资源分布与数量特征。表明了该水域资源量呈大幅度下降趋势。以此提出加强渔业生物多样性保护和资源合理利用的建议。     

New Method for Predicting the Motion Responses of A Flexible Joint Multi-Body Floating System to Irregular Waves

A new hybrid method of frequency domain and time domain is developed in this paper to predict the motion responses of a flexibly joint multi-body floating system to irregular waves. The main idea of the method is that the three-dimensional frequency method is used to obtain the hydrodynamic coefficients and the response equations are solved in time domain step by step. All the forces can be obtained at the same time. The motions and nonlinear mooring forces of a box type six-body floating system are predicted. A comparison of the theoretical method-based solutions with experimental results has shown good agreement.     

The responses of CO_2 to El Nino and La Nina in different seasons along 22°-18°N line

1 INTRoDUcTIONThe study results from Nov. 1986 to Aug. 1990 in sea area (ll5"E - 165"E, 20"N -l0"S) during TOGA experiments, indicated that there were outstanding responses of differenceof partial pressure of CO, between sea and air (APCO,) and total dissolved concentrationof CO, (TCO,) to El Nino and La Nina in NW region of the Western Tropical Pacific,including the cruise lines from ll4ofy 22"N to l30"E, l8"N and that from l8"N to 8"N,along l30"E. The characteristics of dis…     

沿22°～18°N航线上CO2对ENSO和LaNina的响应的季节变化

根据1986年11月～1997年12月期间在114°～130°E,沿22°～18°N航线各航次所测量的大气和表层海水中的CO     

1994年西太平洋副高异常的前期特征分析

本文通过相关普查，分析了影响夏季西太平洋副热带高压的北太平洋海温场和北半球５００ｈＰａ高度场的前期特征，找出了影响１９９４夏季酉太平洋副热带高压异常的强信号及其所在区域．以较高的信度和精度建立了夏季逐月副高强度和脊线位置两特征量的预报方程，进一步发现，中、东部太平洋海温场存在与副高强度高相关的对偶相关区，该区同前一年６月加利福尼亚寒流和北赤道暖流间形成的海温梯度相对应，而初夏副高脊线位置则决定于前一年１０～１２月赤道东太平洋一线的海温分布．     

海洋浮游生物氮吸收动力学及其粒级特征

于１９９１年秋－１９９２年夏在中国科学院生态网络站之一的胶州湾进行了４个季节的现场实验，运用＾１５Ｎ同位素示踪方法研究胶州湾浮游生物群落对两种主要源铵态氮和硝态氮的吸收动力学及其粒级特征。研究初步阐明自然浮游生物落在不同季节，对不同氮源的吸收特性和受控机制，首次在群落水平上给出不同粒级浮游生物氮吸收特征的定量描述，从而为新生产力研究，生态系能流分配和生源要素生物地化循环研究提供重要参数。     

影像地图质量的多层次模糊综合评价方法研究

分析了影像地图质量的各级质量元素,并针对影像地图的多质量因素,且大部分因素无法用固定数学模型描述等特点,引入多层次模糊综合评价的方法进行综合评估,经实例证明此方法可行、有效。     

Seasonal Deformation of Permafrost in Wudaoliang Basin in Qinghai-Tibet Plateau Revealed by StaMPS-InSAR

Abstract

Permafrost is extremely sensitive to variance in external hydrothermal conditions. InSAR has advantages in monitoring surface deformation with decent temporal and spatial resolution as well as millimeter precision. In particular, the StaMPS-InSAR method can remove the disturbances of inaccurate digital elevation model (DEM), atmospheric delays and spatiotemporal decorrelation for an accurate estimation of temporal surface deformation. In this paper, a set of ascending and descending Sentinel-1 imageries spanning from March 2017 to June 2018 were acquired and processed by StaMPS-InSAR in order to investigate dynamic changes of permafrost in Wudaoliang Basin, Qinghai-Tibet Plateau (QTP). The results revealed that significant seasonal changes of permafrost, namely subsidence (thawing) in summer and uplift (freezing) in winter, can be observed throughout the Wudaoliang region. This study shows the StaMPS-InSAR analysis on Sentinel-1 datasets has great potential in regional permafrost investigation.