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差点困死哥伦布!百慕大三角以南的恐怖“草原”,藏着什么秘密

新世纪娱乐乐城

When Columbus sailed westward from Europe in the Middle Ages, it opened a new era of exploration of the New World. The new American continent officially appeared in front of Europeans and wrote another history in human history. In this voyage, many horror legends and stories have been left, such as the horrible "sea grassland".

On the way to exploring the New World across the Atlantic Ocean, Columbus saw a green “savannah” in front of them. All the people on the team cheered, thinking they had found a new continent full of treasures, but When they actually arrived at this "grassland", the scene in front of them made them feel awkward. This is not a grassland, but a large piece of endless parasitic algae. In the era of no steam power, this sea area is simply a nightmare for ships. Because the long and dense seaweed can entangle the ship and it is difficult to escape. If the fleet has been trapped here, the people on board can only eat all the food, drink all the water, and die in despair. Fortunately, after a month of struggle, Columbus finally escaped from death.

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This horrible "sea grassland" is the famous Sargasso Sea on the Atlantic Ocean. It is a wide sea area with a length of 3,700 kilometers, 1800 kilometers long from north to south, and an area of more than 4.5 million square kilometers. Even now, it is also linked to terror, because it is south of the famous Bermuda Devils Delta. At the same time, it is also the only sea in the world without a coast.

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There have been many opinions about the causes of the Sargasso Sea, especially since there is a lot of controversy about where these Sargassums come from. Scientists using NASA satellite observations have focused on these algae on the Atlantic. The results were published in a recent paper in the《科学》magazine.

xx研究人员发现,这些大型藻类在大西洋中可以生长得如此之大,以至于它覆盖了从非洲西海岸到热带大西洋的广阔海洋表面。例如,在2018年,大西洋上有超过2000万吨的马尾藻生长,其重量超过200艘满载航空母舰。利用环境数据和一些直接的海洋采样数据,科学家们指出,两种主要的养分投入导致了大西洋上马尾藻的季节性爆发。

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首先,在春季和夏季,亚马逊河流量增加了海洋养分,近年来由于森林砍伐增加和肥料使用增加,河流养分增加。另一方面,西非海岸在冬季的上升将来自深水的营养物质带到马尾藻生长的海洋表面,从而允许马尾藻的生长。

在开阔的海洋中,Sargasso为海龟,螃蟹,鱼类和鸟类提供栖息地,并通过光合作用产生氧气,以促进海洋健康。然而,当海藻太多时,海洋物种难以移动和呼吸。当藻类死亡并沉入海底时,会导致深度缺氧和窒息。

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在2011年之前,大西洋的大部分羊栖菜主要分布在墨西哥湾和马尾藻海,但在2011年,大西洋羊栖菜的种群开始在之前不存在的地方爆发,并淹没,导致海岸线窒息,对当地环境和经济造成滋扰。例如,西印度群岛的巴巴多斯在2018年宣布全国性紧急状态,因为海藻的大规模入侵影响了海岸线。

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这种突然性的变化令科学家们关注,按道理来说,海洋的某些变化必须改变才能使海藻失控,科学家们分析了巴西的肥料消费模式,亚马逊森林砍伐率,亚马逊河流量以及从大西洋部分地区采取的氮和磷测量以及其他海洋特性,初步得到了结论,大西洋马尾藻的爆炸繁殖与森林砍伐和化肥使用的增加有关,这两者自2010年以来都有所增加。

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最终,大西洋上失控的马尾藻指向人类活动,这意味着一系列复杂的变化最终将影响海洋生态环境,或给大西洋带来灾难。不过,研究者也指出,马尾藻在盐度正常且水温正常或略偏低的水域中更容易繁殖,水温升高的情况下可能会抑制它的生长。因此全球变暖的未来这些海藻的活动情况可能更加复杂。

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