Bão Cát
Dust Storms
When the Air Itself Turns Against You!
- Khi mà không khí dễ hít thỡ trỡ thành kẽ thù kũa bạn!!
- Bão kát trước đây chĩ xãy ra 1 hay 2 trận/năm.. nhưng bây chừ dã xãy ra bội lần hơn ..tỷ zụ như ỡ Mauritania... 80 trận !!
- Nhưng nhìn trong một chiều hướng khác .. đó là điềm tốt vì dã làm cho nước biễn trỡ nên mát mẽ và hậu quã là mùa bão tố (hurricane) trỡ nên bớt hoành hành hơn.
They are known by many names: Haboob, Simum, Black Blizzards. A
solid wall of dust almost a mile high, moving whole sand dunes and bringing
Biblical darkness to the huge areas of the world. Scorching hot winds (up to 40
degrees Celsius) blowing the sand around with hurricane speeds... What seems
extreme to us is actually a common occurrence in Africa and the Middle East.
The similar sand-saturated hurricane-speed storms over Mediterranian are called
Sirocco, Yugo and Ghibli. The dust (or desert sand) particles become airborne
and held in suspension, creating a moving front. The convection of cold air
over the heated ground maintains the storm and keeps the dust rolling.
See one such storm coming into the Israeli Negev desert from
Sinai (advancing with the speed of appr. 40 mph). According to the photographer
Eviathar ben Zedeff (link), the sand wall is over 4,000 ft high:
Dust Storm Israeli Negev Desert
Bão kát ỡ sa mạc Negev kũa Zo Thái
Dust Storm Israeli Negev Desert
Sand Storm in Khartoum, Sudan
Bão cát ỡ Khartoum, xứ Sudan
Sand Storm in Khartoum, Sudan
Sand Storm in Khartoum, Sudan
Here is an alarming fact: sand storms now happen ten times more
frequently than fifty years ago. For example, Mauritania had only two storms
per year in the early Sixties, now it's more like EIGHTY a year. Sahara's sand
is also being sent into the Atlantic at an accelerated pace (five times growth
in one year, since 2006!) - however, this could be a good thing, according to
Wikipedia, as it will cool off the ocean enough to slightly ease the ongoing
2007 hurricane season.
Dust covers Astana, the new capital of Kazakhstan
Dust covers Astana, the new capital of Kazakhstan
Kát bao fũ Astana, tân thũ fũ kũa xứ Kazakhstan
Dust covers Astana, the new capital of Kazakhstan
Storm in Phoenix, Arizona, USA
Ỡ Hoa Kỳ thì Tiễu bang Arizona thường "lãnh đũ" bão kát
The lamplighters brave the dust storm in Nevada desert
Ỡ sa mạc Nevada, Hoa Kỳ ..
những người kó nhiệm vụ bão vệ lữa dang di tiếp lữa cho zân trong sa mạc..
The next picture may look like an incoming dust storm, but it is
just a cloud front.
Hình zưới ni không fãi là bão kát ..mà chĩ là khối mây hội tụ zo Thiên Nhiên tạo ra.. ỡ "zưới nớ" (Down Under)
Cloud Front Australian Outback
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