Ученые объяснили Кровавый водопад в Антарктиде

Оказалось, что его вода может оставаться жидкой в условиях чрезвычайно холодного ледника.

Вода Кровавого водопада в Антарктиде зажата на глубине под ледником и имеет возраст более миллиона лет. Об этом говорится в новом исследовании ученых, описанных в журнале Journal of Glaciology.

Ледник Тейлор широко известен благодаря тому, что время от времени из него начинает течь вода ржавого цвета из-за наличия большого количества железа. Поэтому он и получил название «кровавый».

При помощи радара ученые смогли определить источник этой воды. Выяснилось также, что эта вода может оставаться жидкой в условиях чрезвычайно холодного ледника, что ранее считалось невозможным.

«Несмотря на то, что это звучит парадоксально, вода при замерзании отдает тепло, которое растапливает окружающий холодный лед. Ледник Тейлора считается самым холодным из тех, в которых течет жидкая вода», — рассказали авторы работы.

Известно, что ржавый цвет появляется от окислов железа, являющихся следствием уникального метаболического цикла.

Проанализировав химический и изотопный состав в потоках воды «Кровавого» ученые доказали, что это озеро,из которого он вытекает, заселено микроорганизмами.

Ранее из фотографий спутника NASA создали видео, которое показывает, как от антарктического ледника Пайн-Айленд откололся айсберг длиной примерно 3,6 километра. Авторы ролика сравнивают размеры айсберга с Манхэттеном.

Источник: korrespondent.net


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