TP HUN chuyn bin ng

Ngi trnh by: L Th Xun LanBUI TP HUN

Chuyn : BO-T THN CA BIN NG NI DUNGI.Nhng hiu bit c bn v nh hng ca bin ng n thin nhin Vit Nam 1. Khi qut v bin ng 2. nh hng ca bin ng n thin nhin Vit NamII. Din bin tht thng ca bo trong nhng nm gn yIII. Bin php lm hn ch nh hng ca bo

I.Nhng hiu bit c bn v nh hng ca bin ng n thin nhin Vit Nam1. Khi qut v bin ng2. nh hng ca bin ng n thin nhin Vit Nam

1. Khi qut v bin ngBin ng l mt bin rng, din tch 3477 triu km2.L bin tng i kn, pha ng v ng nam c bao bc bi cc vng cung o.Bin ng nm trong vng nhit i m gi ma.

2. nh hng ca bin ng n thin nhin Vit Nam Kh hua hnh v cc h sinh thi vng ven binTi nguyn thin nhin vng binThin tai

a) Kh hu

Mang li m, lng ma lnGim tnh cht khc nghit ca thi tit=> Kh hu mang c tnh hi dng, iu ha hn.b) a hnh v cc HST vng ven bin

a hnh ven bin a dng: b bin mi mn, tam gic chu, bi ct, m ph, cn ct, vng, vnh, o ven b HST ven bin a dng v giu c: HST rng ngp mn (450 nghn ha); HST trn t phn, HST rng trn cc o,Cc dng a hnh ven b

i Ct Bay

Cn ctMt s hnh nh v m ph

H sinh thi rng ngp mn

c) Ti nguyn thin nhin vng bin

Ti nguyn khong sn: tr lng ln v gi tr nht l du kh (B Nam Cn Sn, Cu Long,), titan, mui, Ti nguyn hi sn: 2000 loi c, hn 100 loi tm, mc, ph du, san h

C ngMc ngTi nguyn bin ngDu kh

Ti nguyn bin ngKhai thc titan

Sn xut muid) Thin taiBo: 3 n 4 cn bo/nm.Sc l b binCt bay, ct ln=> Cn phi s dng hp l TN bin, phng chng nhim MT bin, thin tai,Hnh nh thin tai bin ng

Ct bay

Sc l b binHin tng ct bay tn cng Tp Vng Tungy 10/04/2007

Cng nhn v sinh vt v xc ct gii phng mt ng

Ct xm ln ng inh hng ca bo

II. Din bin tht thng ca bo trong nhng nm gn yNhng nm gn y din bin thi tit ngy cng c nhiu tht thng do BKH, nhng cn bo c sc tn ph khng khip, tht thng c v thi gian v a imC th im qua nhng cn bo tht thng trong lch s t 2008-2012

Nm 2008Nm 2008, c 3 bn tin nhn nh v xoy thun nhit i (XTN bao gm: p thp nhit i v bo), Trong hai bn tin ca trng i hc Tng hp Hng Kng v Vin Nghin cu quc t v kh hu v x hi u cho rng s lng XTN hot ng trn khu vc Ty Bc Thi Bnh Dng cao hn mc trung bnh nhiu nm khong 1-2 cn, t 27-28 cn (trung bnh l 27 cn). Cn trn khu vc bin ng, cao hn mc trung bnh khong 2 cn, t 12-15 cn (trung bnh l 12 cn). Ring trong ma 7 (gm thng 7, 8, 9) XTN hot ng trn khu vc Ty Bc Thi Bnh Dng, c khong 16 cn, Vit Nam c khong 5 - 6 cn hot ng trn khu vc bin ngNm 2009C cn bo s 9 b vo min Trung Vit Nam cui thng 9 nm 2009 c nh gi l cn bo mnh nht trong lch s 45 nm qua ti Vit Nam vi nhiu tn tht v ngi v ca. 162 ngi cht thit hi 14,3 ngn t ng nhng con s kinh khng do cn bo kinh hong gy ra i vi khc rut min Trung Vit Nam, vi t nc Vit Nam nh b.Nm 2010Bo t nhng cng mnh hnNhn chung trn c nc, ma ma bo nm 2010 kt thc mun so vi trung bnh nhiu nm, khong cui thng 10. c bit, s cn bo hot ng trn khu vc Bin ng t hn trung bnh nhiu nm, khong 10 - 12 cn trong khi trung bnh 14 - 15 cn. Tuy nhin, s cn bo, p thp nhit i nh hng trc tip n Vit Nam li cao hn, khong 6-7 cn trong khi trung bnh hng nm ch c 5- 6 cn. Cng cc cn bo cng mnh v din bin c bit phc tp khi vo cc tnh min Trung. Nm 2010 c nhng cn bo mnh cp 14 - 15 nh hng n nc ta v tp trung vo cui ma.Nm 2012Nm 2012 c d bo l bo vp thp nhitihot ng trn khu vc Bin ng c kh nng nhiu hn trung bnh nhiu nm v xut hin sm hn so vi quy lut hng nm.iuny c minh chng khi cn bo s 1 xut hin ngay t cui thng 3.c bit hn, cn bo u ma ny li xut hin ti cc tnh pha Nam ch khng phi min Bc hay min Trung nh mi nm.Cn bo s 1 him gp ny cng gy thit hi kh nng n cho 7 tnh pha nam k c v ngi v ti sn

Nhng hnh nh v cn bo bt thng-bo s 1-nm 2012

ng i ca bo s 1-nm 2012Bo trn ph Ct LiHu qu li sau cn bo

III. Bin php lm hn ch nh hng ca boCn tng cng d bo v a thng tin sm, kp thiTuy nhin, khng c d bo no ng 100%, d bo ng nht t nhng i mnh trn th gii cng khong 65-70%, vn cn 35-30% d bo sai. D bo ng trong d bo di hn l iu khng tng. Hin ti, Vit Nam cng cha c mt m hnh d bo no d bo c s lng cn bo nh hng n Vit Nam, m ch d bo c s lng bo hot ng trn bin ng