论文部分内容阅读
The partial pressure of CO2 and air –sea fluxes were determined monthly during 2003-2004 in El-Mex Bay.It is shallow sheltered Estuary west of Alexandria.Surface water partial pressure of CO2 was varied largely between 9464.2 – 0.6 μatm.Its distribution was controlled by complex combinations of different factors such as volume and water quality of discharged waste water from different land based sources,biological activity,physical mixing processes,and fresh water residence time.El-Mex Bay surface water was found in most cases oversaturated with respect to the atmosphere and its saturation percentages were ranged between 0.16 - 2487.85 %.The calculated water- atmosphere CO2 flux showed a clear dependence on salinity.Water type L which is brackish water with S<10 showed an annual average CO2 flux to the atmosphere 148.54 mmol m-2day-1,while the flux in water type M which is mixed sea water with land drainage water type with salinity ranges 10
其他文献
本文介绍了数字潍坊地理空间框架建设中三维地理在国土资源管理中的研究,实现了在国土资源土地登记中的精细化管理,为在民政、公安、住建等部门的推广应用起到了良好示范作用,三维地理信息将在未来地理信息发展中以直观、形象、易懂、三维空间表达等特点占有重要地位.
大数据时代,城市规划行业数据猛增,面临着管理困难、难以共享的难题.从知识管理的角度,以实现知识共享和重复利用为目标,基于“数据物理分布、服务逻辑统一”的数据存储模式,提出了数据治理思路和平台建设方案,作为城市规划行业数据治理的新探讨.
针对中国自然灾害、公共卫生事件、事故灾难等突发性公共事件多发的基本国情,需要加快推进应急测绘工作,实现对灾害的快速、准确服务,从而减少人身财产的损失,减弱灾害对经济发展的影响.本文通过应急遥感数据统筹、应急动态三维地理信息服务平台构建,快速、准确的实现应急动态三维服务,在三维可视化环境下进行灾情信息、救灾信息及相关统计信息的立体、动态模拟与分析.平台在多次抢险救灾过程中得到成功应用,为国家相关部门
Ecosystem processes and structure are key determinants of upper-ocean biogeochemical cycles that are affected by climate,and in turn influence climate.Marine bacterial communities consume and process
会议
The Atlantic Meridional Transect (AMT) programme (www.amt-uk.org) is a time series of stations along a 13,500 km transect in the Atlantic Ocean.The programme began in 1995,utilising the passage of the
会议
UK SOLAS (Surface Ocean – Lower Atmosphere Study) aims to advance understanding of environmentally significant interactions between the atmosphere and ocean,focusing on material exchanges that involve
会议
Determination and prediction of the temporal and spatial variability in plankton production and resp
Euphotic zone plankton gross production (P),primary production (PP) and respiration (R) were determined from the in vitro flux of dissolved oxygen and incorporation of 14C during eight latitudinal tra
会议
Preliminary results of the composition and surface activity of surfactants obtained from sea surface microlayer (SSM) samples collected in the Blyth Estuary and an offshore station in the North Sea ar
会议
Methanesulphonic acid (MSA) and sulphate are the end products of two different oxidation pathways of atmospheric dimethylsulphide (DMS).Sulphate aerosols can act as cloud condensation nuclei that affe
会议
Shipboard eddy correlation measurements of DMS air/sea flux and surface ocean concentrations were made out using atmospheric pressure chemical ionization mass spectrometry (API-CIMS).Two cruises were
会议