scholarly journals Distribution and diversity of gelatinous zooplankton in the southern South China Sea

2021 ◽  
Vol 944 (1) ◽  
pp. 012019
Author(s):  
N A Kamaruddin ◽  
N H A Ishak
Keyword(s):  
South China Sea ◽  
South China ◽  
Principal Component ◽  
Gelatinous Zooplankton ◽  
Peninsular Malaysia ◽  
Southern South China Sea ◽  
Composition Distribution ◽  
China Sea ◽  
Abundance And Diversity ◽  
Insight Into

Abstract Although gelatinous zooplankton are widely distributed in many ocean ecosystems, they have been understudied due to their fragility nature, difficulties to sample or handle and a lack of expertise. This study gives an insight into the distribution and diversity of gelatinous species in the Southern South China Sea. Species composition, distribution and abundance of gelatinous zooplankton were investigated along the East Coast of Peninsular Malaysia. A total of 37 species were recorded from 10 locations along 4 transects at 5.10° N and 6.80° N extending from 103.2° E to 105.3° E in August 2016. Seven medusae, six siphonophores, four appendicularians, six chaetognaths, six salps, four doliolids and four pteropods were identified from the study area. Appendicularia with 201 ind/m3 was found to be the most dominant taxa recorded, followed by chaetognaths with 197 ind/m3. Scyphomedusae were the least represented group in the study, with an abundance of 8 ind/m3. Stations near the inshore region show higher abundance and diversity of gelatinous zooplankton compared to offshore regions. The evenness index between stations revealed that the gelatinous zooplankton were evenly distributed. According to Principal Component Analysis (PCA), the diversity and distribution of gelatinous zooplankton are driven by depth and temperature.

Research on the Multi-Parameter Modeling of Submarine Sediment Prediction

2013 ◽  
Vol 462-463 ◽  
pp. 13-16
Author(s):  
Zhong Hui Luo ◽  
Qi Jun Xiao ◽  
Jun Lan Wu
Keyword(s):  
South China Sea ◽  
Sound Velocity ◽  
South China ◽  
Empirical Equation ◽  
Measurement Data ◽  
Principal Component ◽  
Physical Parameters ◽  
Southern South China Sea ◽  
China Sea ◽  
Correlated Parameters

It is presented in this paper the technology of principal component analysis and analyze existing empirical equation and its calculation errors. A principle component model is then built up using the measurement data of sediments from the continental slope and shelf in southern South China Sea. It is also studied in theory how to exclude correlated parameters from a number of parameters that can affect the sound velocity and how to optimize a few parameters that are obviously related to sound velocity without cross-correlation. Using the optimal physical parameters, such as porosity n, median grain size Md (φ) and plastic limit Wp, a three-parameter forecasting equation of sound velocity is established for the continental shelf and slope in southern South China Sea.

Contrasting Characteristics of Convection over the Northern and Southern South China Sea during SCSMEX

2006 ◽  
Vol 134 (4) ◽  
pp. 1041-1062 ◽  
Author(s):  
Paul E. Ciesielski ◽  
Richard H. Johnson
Keyword(s):  
South China Sea ◽  
South China ◽  
Kelvin Wave ◽  
Southern South China Sea ◽  
Rainy Period ◽  
Stratiform Rain ◽  
China Sea ◽  
Convective Systems ◽  
Early Afternoon ◽  
Dominant Feature

Abstract Observations from two enhanced sounding arrays during the May–June 1998 South China Sea Monsoon Experiment (SCSMEX) are used to determine and contrast the properties of convection over the northern and southern South China Sea (SCS). A regression analysis between SST data and monthly rainfall indicates that the ENSO signal exerted a strong influence on the rainfall distribution over the SCS during SCSMEX. This resulted in wetter-than-normal conditions along the south China coast and northern SCS, and generally drier-than-average conditions elsewhere, particularly over the Philippine Islands. The monsoon onset as determined by a shift in the low-level winds from easterly to southwesterly over the SCS occurred around mid-May. Over the southern enhanced sounding array (SESA), the onset was characterized by a rainy period associated with the passage of a convectively coupled Kelvin wave. This was followed by a weeklong break and then several episodic rain events with increasingly higher rain rates. Rainfall over the northern enhanced sounding array (NESA), which was largely out of phase with SESA rainfall events, occurred primarily during two 10-day periods separated by a weeklong break. Convective characteristics over the SESA, deduced primarily from heat and moisture budget profiles, indicate a high stratiform rain fraction consisting of alternating periods with decaying mesoscale systems that organized near the western Borneo coastline and shallower convective clouds. In contrast, NESA-averaged profiles were indicative of deep convection with a relatively small stratiform rain fraction, which was confirmed with radar analyses during the onset convective period. The diurnal cycle of convection is a dominant feature throughout much of the SCS. Over both budget regions, early morning (0500–0800 LT) convective systems were frequently initiated near the coasts, then gradually dissipated during the course of the day as the midlevel steering currents moved the systems away from the coastline. These decaying convective systems resulted in an early afternoon (1400 LT) rainfall peak over both sonde arrays.

Geochemistry of Pliocene Sediments from ODP Site 1143 (Southern South China Sea)

2003 ◽  
Author(s):  
R. Wehausen ◽  
J. Tian ◽  
H.-J. Brumsack ◽  
X. Cheng ◽  
P. Wang
Keyword(s):  
South China Sea ◽  
South China ◽  
Southern South China Sea ◽  
China Sea

Multilateralism and Divisions in ASEAN

2018 ◽  
pp. 24-44
Author(s):  
Daniel C. O'Neill
Keyword(s):  
Foreign Direct Investment ◽  
South China Sea ◽  
Collective Action ◽  
South China ◽  
Direct Investment ◽  
The South China Sea ◽  
The South ◽  
China Sea ◽  
Asean Member ◽  
Insight Into

This chapter introduces ASEAN and the “ASEAN Way” of taking actions based on consensus as well as both the theoretical and practical difficulties that presents for successful collective action by the members of the organization. Emphasizing the theoretical insights of Ruggie and other scholars concerning multilateralism as well as theories of collective action, the chapter provides insight into the factors that inhibit a common ASEAN response to the disputes in the South China Sea. The chapter further highlights the diversity among ASEAN member states, including geographic, cultural, political, and economic differences, as well as their own territorial disputes both in and outside of the South China Sea, that further inhibit collective action. Finally, the chapter provides data on China’s foreign direct investment (FDI) into the region, which, the book argues, provides China with increased influence over some ASEAN members.

Sign in / Sign up

Export Citation Format

Share Document