![\"\"](\"https:\/\/cdcangiang.vn\/wp-content\/uploads\/2023\/05\/Kien_Thuc_Ve_Giong_Set.jpg\")
<\/p>\nGi\u00f4ng l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng th\u1eddi ti\u1ebft k\u00e8m theo s\u1ea5m, ch\u1edbp x\u1ea3y ra. C\u01a1n gi\u00f4ng \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh khi c\u00f3 kh\u1ed1i kh\u00f4ng kh\u00ed n\u00f3ng \u1ea9m chuy\u1ec3n \u0111\u1ed9ng th\u0103ng. C\u01a1n gi\u00f4ng c\u00f3 th\u1ec3 k\u00e9o d\u00e0i t\u1eeb 30 ph\u00fat \u0111\u1ebfn 12 ti\u1ebfng v\u00e0 c\u00f3 th\u1ec3 tr\u1ea3i r\u1ed9ng t\u1eeb v\u00e0i ch\u1ee5c \u0111\u1ebfn h\u00e0ng tr\u0103m km.<\/p>\n
Trong giai \u0111o\u1ea1n \u0111\u1ea7u ph\u00e1t tri\u1ec3n c\u1ee7a c\u01a1n gi\u00f4ng, kh\u1ed1i kh\u00f4ng kh\u00ed n\u00f3ng \u1ea9m chuy\u1ec3n \u0111\u1ed9ng l\u00ean tr\u00ean. S\u1ef1 ph\u00e2n chia \u0111i\u1ec7n t\u00edch trong m\u00e2y gi\u00f4ng g\u00e2y b\u1edfi chuy\u1ec3n \u0111\u1ed9ng th\u1eb3ng \u0111\u1ee9ng trong \u0111\u00e1m m\u00e2y. S\u1ef1 ph\u00e2n b\u1ed1 \u0111i\u1ec7n t\u00edch trong \u0111\u00e1m m\u00e2y kh\u00e1 ph\u1ee9c t\u1ea1p. Kh\u1ea3o s\u00e1t th\u1ef1c nghi\u1ec7m cho th\u1ea5y, th\u00f4ng th\u01b0\u1eddng m\u00e2y gi\u00f4ng c\u00f3 k\u1ebft c\u1ea5u nh\u01b0 sau: v\u00f9ng \u0111i\u1ec7n t\u00edch \u00e2m ch\u00ednh n\u1eb1m \u1edf khu v\u1ef1c \u0111\u1ed9 cao 6 km, v\u00f9ng \u0111i\u1ec7n t\u00edch d\u01b0\u01a1ng \u1edf ph\u1ea7n tr\u00ean \u0111\u00e1m m\u00e2y \u1edf \u0111\u1ed9 cao 8-12km v\u00e0 m\u1ed9t kh\u1ed1i \u0111i\u1ec7n t\u00edch d\u01b0\u01a1ng nh\u1ecf ph\u00eda d\u01b0\u1edbi ch\u00e2n m\u00e2y.<\/p>\n
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Khi c\u00e1c v\u00f9ng \u0111i\u1ec7n t\u00edch \u0111\u1ee7 m\u1ea1nh s\u1ebd x\u1ea3y ra ph\u00f3ng \u0111i\u1ec7n s\u00e9t. Ph\u00f3ng \u0111i\u1ec7n c\u00f3 th\u1ec3 x\u1ea3y ra trong m\u1ed9t \u0111\u00e1m m\u00e2y gi\u1eefa c\u00e1c v\u00f9ng \u0111i\u1ec7n t\u00edch tr\u00e1i d\u1ea5u, x\u1ea3y ra gi\u1eefa c\u00e1c \u0111\u00e1m m\u00e2y v\u1edbi nhau ho\u1eb7c gi\u1eefa m\u00e2y v\u1edbi \u0111\u1ea5t.\u00a0S\u00e9t g\u00e2y t\u00e1c h\u1ea1i cho con ng\u01b0\u1eddi khi n\u00f3 \u0111\u00e1nh xu\u1ed1ng \u0111\u1ea5t. Trong lo\u1ea1i s\u00e9t \u0111\u00e1nh xu\u1ed1ng \u0111\u1ea5t ng\u01b0\u1eddi ta ph\u00e2n ch\u00fang ra l\u00e0m hai lo\u1ea1i: s\u00e9t \u00e2m v\u00e0 s\u00e9t d\u01b0\u01a1ng; s\u00e9t \u00e2m (90%) ch\u1ee7 y\u1ebfu xu\u1ea5t hi\u1ec7n t\u1eeb ph\u1ea7n d\u01b0\u1edbi \u0111\u00e1m m\u00e2y \u0111\u00e1nh xu\u1ed1ng \u0111\u1ea5t. S\u00e9t d\u01b0\u01a1ng th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n t\u1eeb tr\u00ean \u0111\u1ec9nh \u0111\u00e1m m\u00e2y \u0111\u00e1nh xu\u1ed1ng. Lo\u1ea1i s\u00e9t d\u01b0\u01a1ng n\u00e0y xu\u1ea5t hi\u1ec7n b\u1ea5t ng\u1edd v\u00e0 \u0111\u00f4i khi r\u1ea5t nguy hi\u1ec3m v\u00ec tr\u1eddi v\u1eabn quang v\u00e0 ph\u1ea7n d\u01b0\u1edbi ch\u01b0a m\u01b0a.\u00a0Qu\u00e1 tr\u00ecnh trung ho\u00e0 v\u00e0 t\u00e1i t\u1ea1o \u0111i\u1ec7n t\u00edch x\u1ea3y ra li\u00ean t\u1ee5c trong c\u01a1n gi\u00f4ng. S\u1ea5m l\u00e0 ti\u1ebfng \u0111\u1ed9ng do k\u00eanh s\u00e9t \u0111\u1ed1t n\u00f3ng kh\u00f4ng kh\u00ed. Khi kh\u00f4ng kh\u00ed n\u1edf ra r\u1ea5t nhanh, n\u00f3 g\u00e2y ra ti\u1ebfng \u0111\u1ed9ng. Ta c\u00f3 th\u1ec3 nghe th\u1ea5y s\u1ea5m trong v\u00f2ng b\u00e1n k\u00ednh 20 -25km.\u00a0C\u01a1n gi\u00f4ng c\u00f3 th\u1ec3 v\u00ed nh\u01b0 m\u1ed9t nh\u00e0 m\u00e1y ph\u00e1t \u0111i\u1ec7n nh\u1ecf c\u00f4ng su\u1ea5t v\u00e0i tr\u0103m megavat. \u0110i\u1ec7n th\u1ebf c\u00f3 th\u1ec3 \u0111\u1ea1t h\u00e0ng 1 t\u1ef7 v\u00f4n v\u00e0 v\u00e0 d\u00f2ng \u0111i\u1ec7n 10- 200kAmper. M\u1ed9t tia s\u00e9t th\u00f4ng th\u01b0\u1eddng c\u00f3 th\u1ec3 th\u1eafp s\u00e1ng b\u00f3ng \u0111\u00e8n 100 w trong ba th\u00e1ng.\u00a0\u00a0\u00a0 Theo th\u1ed1ng k\u00ea \u01b0\u1edbc t\u00ednh tr\u00ean tr\u00e1i \u0111\u1ea5t c\u1ee7a ch\u00fang ta c\u1ee9 m\u1ed7i gi\u00e2y c\u00f3 ch\u1eebng 100 c\u00fa ph\u00f3ng \u0111i\u1ec7n x\u1ea3y ra gi\u1eefa c\u00e1c \u0111\u00e1m m\u00e2y t\u00edch \u0111i\u1ec7n v\u00e0 v\u1edbi m\u1eb7t \u0111\u1ea5t. C\u00f4ng su\u1ea5t c\u1ee7a n\u00f3 c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi h\u00e0ng t\u1ef7 kw, l\u00e0m n\u00f3ng kh\u00f4ng kh\u00ed \u0111\u1ebfn 28000 \u0111\u1ed9 C (h\u01a1n ba l\u1ea7n nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t m\u1eb7t tr\u1eddi).<\/p>\n
Ngo\u00e0i t\u00e1c d\u1ee5ng t\u1ea1o ra ph\u00e2n nitrogen c\u00f3 l\u1ee3i cho c\u00e2y tr\u1ed3ng, s\u00e9t l\u00e0 hi\u1ec3m ho\u1ea1 g\u00e2y thi\u1ec7t h\u1ea1i v\u1ec1 ng\u01b0\u1eddi v\u00e0 t\u00e0i s\u1ea3n. H\u00e0ng n\u0103m tr\u00ean th\u1ebf gi\u1edbi theo th\u1ed1ng k\u00ea c\u00f3 kho\u1ea3ng 5000 ng\u01b0\u1eddi b\u1ecb s\u00e9t \u0111\u00e1nh.\u00a0V\u00e0o m\u1ed9t th\u1eddi \u0111i\u1ec3m b\u1ea5t k\u1ef3 tr\u00ean tr\u00e1i \u0111\u1ea5t c\u00f3 kho\u1ea3ng 2000 c\u01a1n gi\u00f4ng \u0111ang ho\u1ea1t \u0111\u1ed9ng. M\u1ed9t c\u01a1n gi\u00f4ng b\u00ecnh th\u01b0\u1eddng k\u00e9o d\u00e0i 4 ti\u1ebfng c\u00f3 th\u1ec3 c\u00f3 10 000 c\u00fa ph\u00f3ng \u0111i\u1ec7n trong \u0111\u00f3 c\u00f3 1000-2000 ph\u00f3ng xu\u1ed1ng \u0111\u1ea5t. \u1ede Vi\u1ec7t nam c\u00f3 th\u1ec3 c\u00f3 t\u1edbi 2 tri\u1ec7u c\u00fa s\u00e9t \u0111\u00e1nh xu\u1ed1ng \u0111\u1ea5t trong v\u00f2ng 1 n\u0103m. T\u1ea1i m\u1ed9t s\u1ed1 khu v\u1ef1c nh\u01b0 C\u1ed5 d\u0169ng (H\u1ea3i D\u01b0\u01a1ng), S\u01a1n l\u1ed9c (H\u00e0 T\u0129nh), \u0110\u1ed3ng b\u1eb1ng s\u00f4ng C\u1eedu Long, s\u00e9t g\u00e2y t\u00e2m l\u00fd hoang mang trong nh\u00e2n d\u00e2n.<\/p>\n