国产一精品一AV一免费,亚洲成AV人片不卡无码,AV永久天堂一区二区三区,国产激情久久久久影院

立即打開
全球變暖有望打通北極新航道

全球變暖有望打通北極新航道

Jennifer Abbasi 2013-03-15
氣候變暖也不是一無是處。隨著北極地區(qū)的海冰消融,貫穿加拿大北極群島的西北航道將成為一條可行的商業(yè)航道,更多的船只將有望徑直穿越北極,用更短地時(shí)間往返歐洲,同時(shí)擺脫俄羅斯的盤剝。但環(huán)境和安全問題也將隨之而來。

?

??史密斯認(rèn)為,到本世紀(jì)中葉,在北極地區(qū),船體未加固的開放水域船只將變得更加常見?!斑@些地方能夠激發(fā)人的想象力,”他說?!?9世紀(jì)末,為了尋找歐洲和東方之間的最短路線,許多勇敢的探險(xiǎn)家試圖橫穿西北航道和北海航線,最終殞命。未來,越來越多的普通船只會(huì)渴望進(jìn)入這個(gè)水域。”

雖然西北航道是北美東部和亞洲之間的最短路線,但它不可能成為穿越北極的主要航道,曾經(jīng)擔(dān)任過破冰船船長(zhǎng)的布里格姆教授說。但“未來將有許多船只進(jìn)出加拿大北極地區(qū),很可能是一些從巴芬島向歐洲運(yùn)送鐵礦石的散裝貨輪?!?/p>

“不管是今天還是未來,北極航運(yùn)的主要推動(dòng)力都源自北極自然資源的開發(fā)——北極航運(yùn)將這些自然資源帶向全球市場(chǎng),”布里格姆補(bǔ)充說?!罢缥覀冇^察到的那樣,海冰退卻延長(zhǎng)了航行季節(jié),拓展了海上通道,但全球大宗商品價(jià)格和經(jīng)濟(jì),才是驅(qū)動(dòng)未來北極航運(yùn)發(fā)展的決定性力量?!?/p>

隨著西北航道和北極的開放,一些船只將有望避開俄羅斯的專屬經(jīng)濟(jì)區(qū)(Exclusive Economic Zone):俄羅斯向通過這一區(qū)域的船只征收高昂的強(qiáng)制性護(hù)送費(fèi)。史密斯說,盡管航行于監(jiān)管不那么嚴(yán)苛的國際水域可降低成本,但它也會(huì)導(dǎo)致環(huán)境和安全問題。“情況既讓人興奮,又令人擔(dān)憂,”他說?!氨睒O一直是一個(gè)非常危險(xiǎn)的地方,未來也不會(huì)改變。到了冬天,冰層始終會(huì)再次出現(xiàn)。北極黑暗且遙遠(yuǎn)。我們現(xiàn)在只能預(yù)言,在未來幾年中,北方國家將不得不應(yīng)對(duì)更多的巡邏、搜索、救援和安全問題?!保ㄘ?cái)富中文網(wǎng))

譯者:任文科

????Smith thinks that unreinforced open-water ships could become far more common in the Arctic by mid-century. "These places capture the imagination," he says. "Many intrepid explorers died seeking clear passage through both the Northwest Passage and the Northern Sea Route in the late nineteenth century while looking for the shortest route between Europe and the Orient, as it was known then. Temptation will grow for ordinary vessels to enter these waters."

????Although the NWP is the shortest route from northeastern North America to Asia, it will likely never be used for major shipping on trans-Arctic voyages, says Brigham, who is a former icebreaker captain. But, "there will be many future voyages of ships in and out of the Canadian Arctic, likely bulk carriers carrying iron ore to Europe from Baffin Island."

????"The driver of most Arctic shipping today and in the future is Arctic natural resource developments -- the linkages of Arctic natural resources to global markets," Brigham adds. "Sea ice retreats as observed in the Arctic provide for longer navigation seasons and marine access, but global commodities prices and economics drive the essence of Arctic shipping in the future."

????As the Northwest Passage and the North Pole open up, some ships will be able to avoid Russia's Exclusive Economic Zone; Russia charges steep fees for mandatory escorts through this zone. Although navigating through less-regulated international waters could cut costs, Smith says environmental and safety issues will emerge. "It's both exciting and worrisome," he says. "The Arctic is a dangerous place and always will be. The ice will always return in winter. It's dark. It's remote. Let's just say the northern countries are going to have some patrolling, search-and-rescue, and security issues on their hands in the coming years."

掃描二維碼下載財(cái)富APP
玉龙| 屯留县| 绥宁县| 杭锦后旗| 丽水市| 綦江县| 宁津县| 黔江区| 梁平县| 穆棱市| 金华市| 晋中市| 枣强县| 泰和县| 肃北| 阿合奇县| 华宁县| 二连浩特市| 石狮市| 固原市| 绵阳市| 讷河市| 云浮市| 米泉市| 政和县| 旌德县| 浦东新区| 津南区| 彭阳县| 三原县| 加查县| 无锡市| 卓尼县| 杂多县| 临城县| 久治县| 阿拉善左旗| 中西区| 平原县| 宜宾市| 峨边|