Sông dài 24km ở Canada biến mất chỉ trong 4 ngày


Sông Slims dài 24km, rộng 150m và sâu 3m chảy qua Canada suốt 300 năm qua bất ngờ biến mất chỉ sau 4 ngày, đây là lần đầu được ghi nhận trong 18.000 năm.

Mực nước sông giảm đi đáng kể chỉ trong 4 ngày, mức giảm lớn đến mức dòng sông không thể hồi sinh.

Ngày nay, dòng sông chỉ còn là một vùng đất hoang khô cạn. Đây không phải là sự biến đổi dần dần. Các phép đo chỉ ra, mực nước sông giảm đi đáng kể chỉ trong 4 ngày, mức giảm lớn đến mức dòng sông không thể hồi sinh.

Giờ đây, gió khuấy lên những cơn bão bụi từ tàn tích ở lòng sông. Vậy điều gì đã xảy ra?

Đây là kết quả của hiện tượng hiếm gặp mang tên “dòng sông bị đánh cắp”. Hiện tượng này xảy ra khi dòng sông đổi dòng vì nguyên nhân nào đó. Đối với sông Slims, nguyên nhân là do sự thu lại nhanh chóng của sông băng. Nước băng tan từ sông băng Kaskawulsh ở Canada đổ vào sông Slims. Nhưng năm 2016, nước ở sông băng đổ đi quá xa, do đó nước băng không chảy tới sông Slims nữa.

Theo VnExpress


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