简介：CoralWireless是夏威夷的移动运营商，已经选择北电作为唯一的网络基础设施提供商为其建立夏威夷的PCS网络。涉及的具体金额没有公布。

简介：OnthebasisofthesoundvelocitymeasurementsofthecoralreefcorefromNanyongNo.1wellofYongshuReefintheNanshaIslands,thepaperstudiestherelationsbetweentheverticalsoundvelocitytransitionfeaturesinthecoralreefcoreandthecorrespondingstratigraphicdepositionalfacieschangeaswellasstratigraphicgapoferosion,analysesthecauseofthesoundvelocitytransition,expoundstheconcreteprocessofthesealevelchangeresultinginthestratigraphicgapoferosionandfacieschangeinthecoralreefandexplainstherelationsbetweentheverticalsoundvelocitytransitioninthecoralreefcoreandthecorrespondingstratigraphicpaleoclimateandthesealevelchange.ThisstudyisofimportantpracticalvalueandtheoreticalsignificancetotheislandandreefengineeringconstructionandtheacousticloggingforoilexplorationinthereeflimestoneareaaswellasthepaleoceanographicstudyofthemarginalseainthewestermPacificOcean.

简介：TheAndamanandNicobarIslandsareoneoftheUnionTerritoriesofIndia,locatedintheeasternpartoftheBayofBengal.In2010summer,theincrementinseasurfacewatertemperature(upto34℃)resultedinthebleachingofabout74%to77%ofcoralsintheSouthAndaman.Duringthisevent,coralspeciessuchasAcroporacerealis,A.humilis,Montiporasp.,Faviapallida,Diploastreasp.,Gonioporasp.Fungiaconcinna,Gardineroseriessp.,Poritessp.,FavitesabditaandLobophylliarobustawereseverelyaffected.ThisstudyistoassesstherecoverystatusofthereefecosystembyestimatingthepercentageofLiveCoralcover,Bleachedcoralcover,Deadcoralwithalgae,Rubble,Sandyflat,Algalassemblageandotherassociatedorganisms.Thesedimentationrate(mgcm-2d-1)andcoralcoverage(%)wereassessedduringthisstudyperiod.Theaveragesedimentationratewasrangedbetween0.27and0.89mgcm-2d-1.Theobservedpostbleachingrecoveryofcoralcoverwas21.1%atPortBlairBayand13.29%atHavelockIsland.Themortalityrateofcoralcoverduetothisbleachingwasestimatedas2.05%atPortBlairBayand9.82%atHavelockIsland.Oncetheseawatertemperatureresumedbacktothenormalcondition,mostofthecoralswerefoundrecovered.

简介：珊焊是一个sensitive-to-environment建筑群水兵生态系统。珊瑚的Theecosystem富于生物多样性。遥感为分类珊焊提供一个强大的工具并且是大多数费用-有效途径为大-规模礁石调查。DongshaAtoll，有10m的平均深度的超过300km~2，在华南海的北大陆人边缘被定位。它被在最近的十年期间的破坏钓鱼滥用了。三卫星形象(Quickbird2，ETM+和SPOT5)被用来评估能力ofSPOT5形象提供为在那里分类珊焊的当前的分发是有用的数据。在处理的数据期间，无指导的分类功能为ETM+和SPOT5数据被采用，当监督分类方法被用于Quickbird2时。班是()合并了进珊焊，然后将被vectorization，简化，和拓扑的分析操作。有比有3x3pixels在的察觉限制的100m大的1331珊焊多-Quickbird2的乐队数据，它作为比较基线被拿。从SPOT5和ETM图象提取的Theresults比从theQuickbird2图象的那些是在数字和区域的更少，而从SPOT5数据的结果由于它的更高的分辨率比在淤泥的泻湖的ETM数据的那些好。因为它的差的穿入能力，SPOT5x乐队2没能与ETM数据相比在环礁内区分深底层。仅仅看到x乐队1cannot被用来把珊焊区分开来与沙底部。多合并SPOT5-有SPOT5平底锅的空间分辨率的乐队数据-数据并且指ETM形象被期望提供一颗最佳的卫星-为珊焊印射的基于的途径。

简介：在在斐济的VitiLevu岛的珊瑚海岸上，在小太古的沿海的分水岭的推迟的沉积交货模式的不适当的知识在附近的扰乱的区域妨碍对加速的侵蚀的任何未来评价。这研究采用在Votua溪监视途径的降雨溪流混浊，它排干小、陡峭却最低限度地扰乱的沿海的雨林集水。暴风雨降雨特征，溪流深度和水混浊连续地从2009年10月在一个完全的斐济湿季节被监视到2010年4月。目的是评估这些参数是否提供足够的信息说明暴风雨沉积运输回答的基本特征，在有限溪流计量和很简单的沉积等级曲线的情况中。因为象斐济一样的和平的岛国家没有资源开始那混浊(T)为在5NTU上面的混浊大小是为全部的推迟的固体(TSS)的一个合适的代理的越过重要力量功能表明的众多的小catchments.A的长期的计量和沉积采样计划，这是重要的，与TSS=0.930T1.111(r=0.98，P<0.001)。在学习时期上，10个人袭击11.2-120.1 ；在尺寸的公里生产了‘significant混浊response’(STR)在Votua溪。降雨参数(总数和紧张)与溪流混浊参数显示出积极线性关系(r=0.72-0.94)(平均数，最大，持续时间)，虽然类似的力量(r=0.76-0.98)的关系也在溪流流动深度和混浊之间被导出。这暗示为在斐济的小雨林分水岭，降雨参数不作为对主要暴风雨的流沉积回答的预言者在流动上提供实质的劣势。基于事件的分析揭示了那否定(逆时针方向)磁滞现象是为STR事件的一个典型流动混浊模式。当时，否定磁滞现象被生产第二等的事件更新(重)降雨发生在最大的紧张以后，在暴风雨事件的以后的阶段。在2009年12月的热带气旋Mick产生了最大的洪水和最大的混浊反应(T最大=1021NTU，T吝啬的=207NTU)。这同意更早的工作证实热带气旋是为在斐济溪流网络的沉积运输�

简介：Inrecentyears,infrastructureconstructiononcoralreefshasbeenincreasinglydeveloped.Therefore,theshallowstratastabilityofcoralreefsintheSouthChinaSeashouldbeevaluated.ThisstudyaimstoinvestigatetheprofilesfortheshallowstrataofcoralreefsinthesouthwestoftheYongshuReef,particularlyinthehydrodynamicmarineenvironment,andtoestablishageologicalmodelfornumericalsimulationusingGeo-Studio.Theshallowstrataofthecoralreefsincludemassgravel,sandgravel,mid-coarsesand,siltysand,finesand,andreeflimestone.Theshallowreefslopenearthelagoonissimilartoa‘layercake＇,inwhichthesideclosetotheseaisanalogoustoa‘blockcake＇.Thesimulationresultsshowedthatcoralreefstabilitydependsonwaveloadsandearthquakestrengthandonthephysicalpropertiesofcoralreefs.Thefactorofsafetyfortheouterreefisgreaterthan10.0understatic,wave,andseismicconditions;thisindicatedthattheouterreefswerelessaffectedbywavesandearthquakes.However,thefactorofsafetynexttothelagoonvariedfrom0.1to5.3.Thevariationwasprimarilycausedbythethickstrataofcoralreefsclosetothesea（reeflimestone,typicallywiththethickness〉10mandequivalenttoablock）.Thesoilandrocklayersinthecoralreefstratawiththicknesses〈10mshowedweakengineeringgeologicalcharacteristics.Ourfindingscanprovideusefulinformationtofutureconstructionprojectsoncoralreefs.

简介：ThetimeseriesofannualandseasonalgrowthrateoftwocoralPorites,collectedatdifferentsitesoffringereefintheSanyaBay,HainanIslandhavebeenobtainedbyanalyzingX-radiographofskeletalband.Thereareobviousseasonalvariationsofthegrowthrateintwocorals,theaveragelowrateinwinterandtheaveragehighratefromspringtoautumn.Comparedwiththetimeseriesofenvironmentalvariables,thecoralgrowthrateisonlycorrelatedstatisticallywithseawatertemperatureandnotrelatedtorainfallandsunshine.Furthermore,thegrowthrateinspringandsummeriscorrelateddirectlywithseawatertemperatureofthewinter-earlyspring(betweenDecemberandMarch)andtheotherseasonalgrowthratehasnorelationshipwithseasonalvariationsofseawatertemperature.Weproposethatseawatertemperatureisoneofthefactorsaffectingthecoralgrowthrateintheareaandthelowseawatertemperatureisaprimarycontroloftheseasonalgrowthrate.

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简介：InthisstudyweassessedthecurrentstatusofcoralreefsalongtheSaudiArabiancoastoftheRedSea.AmongthethreegrowthformsofAcroporidcorals,thebranchingformswerefoundtodominateintheFarassanIslands(44.55%±11.10%cover)followedbytabularformsintheDogaIslands(rangingbetween18%±6.47%and18.30%±9.47%cover).DigitateformswererarelyfoundalongthecoastexceptatMaqna.Amongthefivegrowthformsofnon-Acroporidcorals,weobservedmaximumcoverofbranchingformsintheYanbuoffshorearea(58.89%±15.11%cover)followedbytheJeddahcoast(24.76%±14.04%cover).TheMilleporaspp.,anon-Scleractiniancoral,wasabundantatallthenear-shoresites,suchasJeddah(10.70%±8.21%)andAl-Wajh(9.81%±6.69%).Thelivecoralcover(includingbothScleractinianandnon-Scleractiniancorals)ofSaudiRedSeacoastwasseentobehigherinthenorthandgraduallydecreasetowardsthesouth.PrincipalComponentanalysisshowedthatthecontributionofAcroporidcoralswasgreaterinthesouthernregionthaninthenorthernandmiddleregions,butvice-versainthecaseofnon-Acroporidcorals.Bray-Curtisclusteranalysiscategorizedallthestudysitesintotwomajorclusterswith60%similarity.Amongthem,onecluster-formingsitesfromMaqnatoMasturah(Northernregion)andthesecondonecomprisedthemiddleandsouthernregions(JeddahtoFarassanIslands),andoneoutlierRabigh.

简介：TheXishaBlockisaminoroneintheSouthChinaSeaandanimportanttectonicunitinthenorthwesternpartoftheregion.ZirconSHRIMPU-PbagesforthreevolcanicintrusivecoresamplesfromXike-1,anexploratorywellpenetratingthebiohermsoftheXishaIslands.ThecoresamplesarefromtheMiocenereefcarbonatebedrockandarerecognizedasdark-graybiotite-hornblendegabbro,grayfne-grainedbiotitediorite,andgrayfine-grainedgranite,respectively.Zirconcathodoluminescence(CL)imagesandtraceTh,UandPbcompositionsofthezirconsshowthattheserocksareofvolcanicintrusiveorigin.ZirconSHRIMPU-Pbdatingyieldedsixgroupsofages,rangingfrom2451-1857MatoearlyCretaceous,whichindicatethattheformationandevolutionoftheXishaBlockwasaffectedbytheevolutionandclosureofNeotethysOcean,probablywithinitseasternextensionintoSouthChinaSea.Bothold,deepsourcedmaterial,includingfragmentsfromRodinasupercontinent,andrecentmantle-derivedmagmaproductscontributedtotheemergenceandformationoftheXishablock.TheSHRIMPU-PbresultsalsoprovedthatthisprocessdifferedfromthatoftheKontummassif,theHainanBlock,andtheSouthChinaBlock,butissimilartothatoftheNanshaandZhongshablocks.TheprocesswasassociatedwiththeeffectsofYanshanianmagmatisminducedbysubductionmechanismsofthePaleo-PacificPlateorthereworkingofthemultiplemagmatismssincetheEarlytomid-Yanshanian,possiblyjointlyexperiencedbytheXisha-Zhongsha-NanshaBlock.

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