Hin tng nc tri
SV thc hin: Phng Th Khnh Hng Hong Th M Phm c QuM - Qu - Hng
Khnh1Nc tri v nc tri Vit NamI.Hin tng nc triKhi nim
Nc tri l qu trnh chuyn ng thng ng ca nc bin t tng su i ln b
mt[Lafond E.C, 1966]Nc tri ln thay th cho lp nc b mt ko theo nhiu
cht dinh dng => c pht trin mnh => ngun li hi sn gn khu vc tm
tri.
Phn loi Theo v tr a l: Nc tri ngoi khi, nc tri ven b
2M - Qu - Hng KhnhHong Th M, Phm c Qu, Phng Th Khnh Hng2C ch hnh
thnh nc tri ngoi khido s phn k ca cc hi lu quy m ln v trung bnh.Vng
hnh thnh Ch yu :vng xoy thun Bc Bn cuvng xoy nghch Nam Bn cu
3M - Qu - Hng KhnhQu trnh vn ng ca nc bin trong xoy
Trong xoy nc bin tng mt vn ng di chuyn i t tm ra ngoi S thiu nc
tm dng nc lnh v mn di tng su tri ln b p cho s thiu nc tm .M - Qu -
Hng Khnh4C ch hnh thnh nc tri ngoi khiC ch hnh thnh xoyNhng ni c
nhit nc bin cao, kh p ca kh quyn thp => thu ht nng lng t cc khu
vc p cao xung quanh => hnh thnh xoy thun ( ngc chiu kim ng h Bc
Bn cu )
Xoy nghch Nam Bn cu hnh thnh tng t nhng vng xoy theo hng cng
chiu kim ng hM - Qu - Hng Khnh5C ch hnh thnh nc tri ngoi khi
C ch hnh thnh xoy 2 ra hi lu nng, lnh quy m ln hnh thnh Cc xoy
thun v nghch VD: xoy thun nghch hnh thnh 2 ra hi lu Kurosio Bc Thi
Bnh Dngv hi lu nng Gulstream Bc i Ty DngM - Qu - Hng Khnh6
C ch hnh thnh nc tri ven b
Do s kt hp ca gi ma vi c im a hnh y, ng b hnh thnh nc triBin i t
ngt hng ca ng b v a hnh y vi dc thch hp to dng chy phn k
7M - Qu - Hng Khnh
C ch hnh thnh nc tri ven b
Gi thi theo hng i ra khi b y tng nc mt bin ra xa b => phn nc
pha ven b b thiu ht => nc di tng y i theo sn y bin tri ln b p
cho nc bin tng mt va b gi thi tri ra xa b.8M - Qu - Hng Khnh
Qu trnh hnh thnh nc tri trc s tc ng ca trng gi ma Ty Nam trong
ma h3.Phn b trn th giiTTVng nc triThi gian xut
hin1Oregon-California, 25-45 NThng 6-82Peru, 5-45 SQuanh nm( yu vo
thng 2-3 )3Benguela (TN chu Phi) 5-30SThng 11-24GuineaThng
6-95Canaries, 10-40 N20-25 N : Quanh nm25 N : Thng 6-11, 20 N :Thng
1-36SomaliThng 6-97AravieThng 6-98Ty n Thng 1-39Ty cThng 1-310ng
KaspiThng 6-811Ty KaspiThng 5-912ven b Nam Vit NamThng 6-9Vng Kab
Frion, thm lc a Krm chu u, Nam Crimea, Nam Crimea, Ty Bin en, Lion,
ng Florida9M - Qu - Hng KhnhBn phn cc vng tri chnh trn th giiM - Qu
- Hng Khnh10
Bn nng sut sinh hc cc i dngM - Qu - Hng Khnh11
El Nino v La Nina l 2 hin tng thi tit in hnh c lin quan n nc
triNgun gc thut ngEl Ninoc bt u s dng bi cc ng dn dc b bin Ecuador
v Peru ch hin tng mt dng hi lu m xut hin ven b bin khu vcting Ty
Ban Nha ngha l "Cha hi ng" hay "a b trai do n thng xut hin vo khong
Ging Sinh12M - Qu - Hng Khnh4. El Nino v La NinaTrong khong thi
gian ny c t i, do cc ng dn thng nh sa cha cc ng c Ngy nay, trong
khoa hoc,El Nino ch hin tng nng ln d thng ca lp nc bin b mt khu vc
xch o trung tm v ng Thi Bnh Dng.M - Qu - Hng Khnh13Ngun gc thut ng
El NinoNgun gc thut ng
La Ninacn c gi l El Viejo hay Anti - El nino.ting Ty Ban Nha
ngha l "a b gi",do ch hin tng nghch o ca El ninol hin tng lp nc bin
b mt khu vc ni trn lnh i d thngM - Qu - Hng Khnh14Quan st lch s c
quan st thy vo u nhng nm 1600. nghin cu c h thng bt u vo cui th k
19, khi cc nh a l Peru ghi nhn hin tng i dng v kh hu bt thng xy ra
theo nh k dc theo b bin Peru (pha ng Thi Bnh Dng m ln mnh m) M - Qu
- Hng Khnh15
3. Nhng nm 1920, Sir Gilbert Walker xc nh bng thc nghim => kh
hu mt s bt thng: thay i p sut khng kh v lu thng xy ra trn ton th
gii mi nm => gi l dao ng NamSir Gilbert Walker K t khong nm 1975
cc nh khoa hc nghin cu El Nino v cc dao ng phng Nam vi nhau. Ngy
nay: El Nino l mt phn ca mt dao ng kh hu c gi l El Nino Southern
Oscillation (ENSO) . El Nino l mt giai on m p ca ENSO; giai on lnh
ca s kin ny c gi l La Nina .
M - Qu - Hng Khnh16
Nm 1960 Jacob Bjerknes xut : El Nino ch l biu hin i dng ca tng
tc quy m ln gia i dng v kh quynJacob Bjerknes
C ch hnh thnh
iu kin bnh thng s khi u ca El NinoTn phong 2 bn cu hi t trn khu
vc xch o Thi Bnh Dng, => lung kh hng ng duy tr thng xuyn tng thp
tng i lu ( khu vc di hi t xch o Thi Bnh Dng )=> cc dng chy bin
hng ng c hnh thnh vn ti nc bin b mt m hn so vi lp nc di su t b ng
sang b Ty ca Thi Bnh Dng
M - Qu - Hng Khnh17min ng Thi Bnh Dng lnh hn min Tymc nc bin b
Ty cao hn b ng khong 30 - 70cm vng xch oTy Thi Bnh Dng, nhit nc bin
cao hn ( B nng Thi Bnh Dng ), khng kh chuyn ng i ln mnh mTrn cao
tng i lu thuc vng b nng, khng kh di chuyn v pha ng ngang qua Thi
Bnh Dng vng pha ng, khng kh chuyn ng i xung M - Qu - Hng Khnh18 Hnh
thnh hon lu khp kn, c trc nm ngang, vi gi ng tng thp, gi Ty trn
cao, c Bjerknes (1969) gi l hon lu WalkerDao ng Nam S phn b kh p vi
gradient c hng t ng sang Ty v nhit nc bin vi gradient c hng ngc li,
t Ty sang ng Duy tr v chi phi hot ng ca hon lu ny
19M - Qu - Hng KhnhHon lu kh Walker
Nm nhit l tng nc c nhit thay i nhanh chng theo su, nm gia lp nc
mt v nc su=> Lp nm nhit c nghing t ng sang Ty Thi Bnh Dng iu kin
bnh thng v thay i theo hot ng ca ENSOM - Qu - Hng Khnh20 Phn bc
trng nhit nc bin theo suHon lu kh Walker
M - Qu - Hng Khnh21Hnh thnh nc tri: Gi mu dch Nam - ng Nam thi
qua lm chch hng nc mt v pha ty Nc bin su lnh giu dinh dng tri ln
thay th.
hon lu Walker iu kin El NinoNguyn nhn:Nguyn nhn ln : l s thay i
hng giNhng nguyn nhn khc : s thay i p sut khng kh, Tri t nng dn ln,
cc cn ng t di y bin.Tuy nhin n nay cc nh khoa hc vn cha c li gii p
hon ton thng nht. 22M - Qu - Hng KhnhHnh thnh El Nino
Bnh thng, gi tn phong hot ng lm chnh lch nhit v cao mt bin gia
ng v Ty Thi Bnh Dng.Hot ng ca tn phong khc nhau theo tng nm. C nhng
nm Tn Phong hot ng yu Nc mt nhit cao c dn tch nhiu Ty Thi Bnh Dng
chy v pha ng
Hon lu Walker suy yu hoc b tch thnh 2 phn Nc tri suy yuTo thnh
mt sng i dng xch o (sng Kelvin) lan truyn v pha ng M - Qu - Hng
Khnh23El NinoC ch hnh thnh El NinoNhit t vng b nng c vn chuyn v vng
trung tm v ng Thi Bnh Dng => nghing lp nm nhit gim
M - Qu - Hng Khnh24
c im ca El Nino
Chnh lch nhit nc bin gia vng pha ng v pha Ty gim i su ca nm nhit
b pha Ty gim i, b pha ng tng ln Trao i nhit thng ng trong lp nc xo
trn i dng mnh m hn.Sng Kelvin lan truyn v pha b ng, b phn x to thnh
sng Rossby chuyn ng v pha Ty, qua , qua lp nc b mt m li c vn chuyn
v pha Ty
M - Qu - Hng Khnh25El NinoThi Bnh Dng c mt chiu ngang rt di dc
xch o ( 2 ln i Ty Dng)
M - Qu - Hng Khnh26c im ca El Nino c th mang n mt chuyn ng c hc
tun hon qua sng ngm (loi sng i dng di chuyn bn di mt nc bin) gy ra
bi gi ma hay cc cn gi mnh khc i khi xy ra trong thi gian di khong 1
thng cc vng dc xch o trn Thi Bnh Dng. Sng i dng l sng di chuyn bn
di mt nc bin.Bt u l gn sng ca thernocline di chuynChu k hng gi ti
hng tunC 2 loi sng: - Sng Kelvi - Sng Rossby 27
Sng Kelvin lan truyn mang nc m t Ty Thi Bnh Dng ti b pha trung
bnh mt khong 50 ngy v b phn x tr li. gy ra mt sng i dng (sng
Rossby) chuyn ng v pha Ty vi thi gian trung bnh khong 6 thng
M - Qu - Hng Khnh28M - Qu - Hng Khnh29
Sng Kelvin vi s d thng v chiu cao b mt i dng tch cc c th hin bng
khu vc bng m mu v vng.Sng Rossby, vi s d thng v chiu cao b mt tiu
cc, c th hin bi cc khu vc bng m mu xanh lam v xanh l cy. cc tn hiu
sng Rossby v Kelvin lan truyn vi tc khc nhau. sng Kelvin i v pha ng
, tc : 2,9 m/s =>1 ln sng Kelvin s vt qua Thi Bnh Dng, ko di t
khong 120 ng n 80 Ty (17.760 Km), trong khong 70 ngy. Sng Rossby i
v pha Ty, tc : 0,93m/s => 1 ln sng Rossby mt khong 210 ngy vt
qua Thi Bnh Dng.
M - Qu - Hng Khnh30M - Qu - Hng Khnh31
Sau 25 ngy: + sng Kelvin di chuyn t trung tm Thi Bnh Dng v n gia
khu vc pha ng. + sng Rossby cng lan truyn v pha ty, nhng trn mt
khong cch ngn hn nhiu. Sau 100 ngy: + sng Kelvin sau khi t n ranh
gii pha ng th phn x tr li pha Ty nh sng Rossby vi mt bin cao bt
thng tch cc. + sng Rossby vn tip tc lan truyn t t v pha tyM - Qu -
Hng Khnh32
Ngy 125, sng Rossby t n ranh gii pha ty v ang phn x li nh mt ln
sng Kelvin sng Kelvin di km s d thng tiu cc v chiu cao b mt bin .
Trong giai on t ngy 125 n 275, sng Kelvin lan truyn t phng Ty ranh
gii pha ng dn n s bt thng chiu cao tiu cc b mt bin theo ng xch o
pha ng. Trong thi gian ny, ln sng Rossby phn nh i t gn 120 Ty n 170
Ty.Khi sng n v phn hi gia hai im, ta s c s thit lp ca mt chu k El
NinoEl Nino thng bt u b ng trc (dc theo Peru) v sau lan v pha ty dc
theo xch o trong thi gian khong vi thng.Sng Rossby chuyn ng tr li
pha ty v cui cng s lm chm dt hin tng El Nino.S phn x qua li ca cc
sng Kelvin v Rossby 2 b ca Thi Bnh Dng quyt nh di v tnh khng n nh
trong cc pha ca mt chu trnh El Nino
M - Qu - Hng Khnh33c im ca El NinoLa Ninacn c gi l El Viejo hay
Anti - El nino.ting Ty Ban Nha ngha l "a b gi",do ch hin tng nghch
o ca El nino l hin tng vng bin khu vc nhit i Thi Bnh Dng lnh i mt
cch bt thng. l hin tng lp nc bin b mt khu vc ni trn lnh i d
thng
M - Qu - Hng Khnh34C ch hot ng ca ENSO
Khi hon lu Walker mnh hn bnh thng, p lc gi ng ln mt bin tng lnNc
tri mnh hn su Ty Thi Bnh Dng tng, ng Thi Bnh Dng gimBnh lu lnh hng
Ty tng ln, lm cho vng bin trung tm v ng Thi Bnh Dng lnh i d thng.
Hnh thnh La Nina35M - Qu - Hng Khnh 35Hong Th M, Phm c Qu, Phng Th
Khnh HngC ch hot ng ca ENSO
Gi ng mnh hn => Nc tri mnh hn, => Nc lnh di chuyn t ven b
Peru, Chile hng sang Ty Thi Bnh Dng ( do gi n thi )Trong qu trnh di
chuyn th nhit ca khi nc ny cng tng dn theo hnh M - Qu - Hng
Khnh36Tnh quy lut v bt thng ca El Nino v La ninaEl NinoThng xy ra
bt u t l Ging Sinhko di 8 - 12 thng, hoc lu hn, Thng din ra khng u
n, nhng nm trong khong chu k 2-7 nm, c khi n 10 nmLa NinaChu k tng
t El NinoM - Qu - Hng Khnh37
So snh chu k El Nino-La Nina 2010-2011 vi chu k cc nm khc
Chu k 2010-2011 gn tng t nh 4 chu k trc Cc nm 1973, 1983 v 1998
El Nino c SSTAs cao hn so vi 2010 chu k hin ti. La Nina 2010-2011
gn cc mc thp La Nina trong 1998-1999 v 1973-1974. Nm 1973-1974 v
chu k 2010-2011 gn ging nhau.
M - Qu - Hng Khnh38
Tnh quy lut v bt thng ca El Nino v La nina Thi gian ko di (s
thng) cc t El Nino giai on 1950-2010 v xu th tuyn tnh.
39
Tnh quy lut v bt thng ca El Nino v La nina
Thi gian ko di (s thng) cc t La Nina giai on 1950-2010 v xu th
tuyn tnh.
M - Qu - Hng Khnh40
Tnh quy lut v bt thng ca El Nino v La ninaXu th khong cch gia cc
t ENSO giai on 1950 2010 41
Tnh quy lut v bt thng ca El Nino v La ninaXu th khong cch gia cc
t ENSO giai on 1950 2010 M - Qu - Hng Khnh42
Tnh quy lut v bt thng ca El Nino v La ninaH qu chung El NinoEl
Nino ph v iu kin bnh thng ca h thng i dng kh quyn khu vc nhit i Thi
Bnh Dng gy nn nhng nh hng thi tit trn quy m ton cu:Ban u nc b ng
nng thm 4 - 5 C, gy ma ln , bo nhit i, l qut, trt t, l bn d diVng
nhit i Ty Thi Bnh Dng lnh i, dng kh ging bin mt gy kh hn ko di 2.
Nhng t gy thit hi ln: 1877-1878, 1888, 1973-1975, 1982-1983,
1997-1998
M - Qu - Hng Khnh43La NinaC hu qu ngc l v thng tip ngay sau
El-NinoCng gy ra nhng d thng v thi tit v kh hu nhiu ni Ma l ln lm
ngp lt, c ha, ngt ha nc ven b, si lt b bin v ca sng khu vc pha ty
vng xch o trung tm Thi Bnh Dng, trn min bc Australia v Indonesia ,
ng nam Chu Phi v min bc Brazil Kh hn iu kin bnh thng dc theo b bin
pha ty ca vng nhit i Nam M, v cc v nhit i ca Bc M (Gulf Coast) v
Nam M (min nam Brazil n min trung Argentina) trong ma ng3. Nhng nm
gy thit hi ln: 1974-1975; 1988-1989; 1995-1996; 1999-2000M - Qu -
Hng Khnh44II. Hin tng nc tri bin Vit NamS lc v hin tng nc tri bin
Vit Nam.C ch hnh thnh vng tri bin Vit NamCc c trng ca vng tri trong
bin Vit Nam45M - Qu - Hng Khnh1.S lc v nc tri Vit Nam
Ven b Nam Trung B 9 tm nh (t Bnh Thun n Qung Ngi)Mnh nht Ninh
Thun - Bnh ThunXut pht t tng nc su 100 - 125 m, Hot ng thng 5 - 9
Mnh nht thng 7 -8 vng tp trung nhiu bi c ln[V Vn Lnh]46M - Qu - Hng
KhnhNc tri Vit NamBng din tch vng nc tri
47M - Qu - Hng KhnhNmThngDin tch (km2)NmThngDin tch
(km2)19938111.864200381.59619947117.45696.0848215.3712004622.2099113.049739.779199563.6078178.11372.09392.240199677.8242005610.5818193.36975.5081997623.993821.536758.855877.7478177.27191.4401999764.03399.598833.106200666.9908206.896761.69796.899845.45792.2918117.6422000618.563200765.31163.34479.1967227.973852.165898.66285.1049374.68194.1002001771.5652008515.827817.488631.74182.183757.76596.54787.7992002723.2452009614.257812.91361.784917.144711.869935.426713.904200366.33287.479...S
lc v hin tng nc tri bin Vit NamM - Qu - Hng Khnh48
...S lc v hin tng nc tri bin Vit NamNc tri thng bt u xut hin
khong thng 5 v kt thc vo thng 9Hu ht cc nm tn ti hin tng nc tri vo
khong thng 7 v thng 8 hng nmDin tch vng nc tri kh l phc tp, bin ng
t vi chc nghn km2, c th gi tr din tch nc tri t cc tiu vo khong 2093
km2 (7/1995), t cc i vo khong 374681 km2 (9/2000)
49M - Qu - Hng Khnh49Hong Th M, Phm c Qu, Phng Th Khnh Hng...S
lc v hin tng nc tri bin Vit NamNhng nm t 2002-2009, s phn b din tch
vng nc tri dng nh hnh thnh mt quy lut tun hon vi chu k 2 nm, vi din
tch c gi tr cc i trn 50000km2 v cc tiu vo khong 3000 4000 km2Cc gi
tr cc i v din tch vng nc tri xut hin nhiu hn vo cc nm 1994, 1995,
1996, 1997 v 2004.Mt s nm xut hin 2 vng nc tri : 1999, 2001, 2005,
2006, 2007.So snh gia thng 7 v 8, s bin ng din tch ca thng 8 phc tp
hn thng 7.
50M - Qu - Hng Khnh...S lc v hin tng nc tri bin Vit Nam
M - Qu - Hng Khnh51Tm nc tri thng 8: dao ng trong khong 12-14 o
v Bc, pha ng m rng n khong 115,5 o kinh ng
M - Qu - Hng Khnh52...S lc v hin tng nc tri bin Vit Nam Tm nc
tri thng 8: dao ng trong khong 12-14 o v Bc, pha ng m rng n khong
114 o kinh ng2.C ch hnh thnh nc tri vng bin Vit NamNc tri ven b Vit
Nam hnh thnh ch yu do gi ma. c bit l gi ma Ty Nam (ma to nc tri) gi
c hng chnh l gi Ty Nam hoc Ty.Dng chy gp ng b v dc y thch hp Phan
Rang( Ninh Thun) to nc tri ngoi khi.53M - Qu - Hng Khnh
C ch hnh thnh vng tri bin Vit Nam
Dng chy ang chy gp phi a hnh b b bin i hng v dc ca y thch hp( ng
ng su)dng chy chnh b tch ra thnh cc dng chy phn k nhau => to ra
vng nc tri
Nc tri ngoi khi Phan Rang (Ninh Thun)54M - Qu - Hng Khnh
Hng chnh gi Ty Nam
1. Gi chnh hng Ty Nam ( vector 1) y nc bin tng mt theo hng Ty
Nam (vector 2). 2. T dng tng mt i ra ngoi bin to ra s thiu ht nc
ven b bin.3. Dng chy tng di lnh v mn theo hng Bc ( vector 4) gp sn
ng b bin Vit Nam => nc bin trn theo a hnh b bin(vector 5) v mt
phn tri ln b vo phn nc b thiu ht.( vector 3)M - Qu - Hng Khnh55C ch
hnh thnh vng tri bin Vit Nam
1. Gi chnh c hng Ty (vector 1) y dng tng mt ra khi theo hng Ty
(vector 2).2. Dng tng mt vn ra khi dn ti s thiu ht nc ven b bin.3.
Dng tng di di chuyn theo hng Bc (vector 4) gp sn ng b Vit Nam, mt
phn i ln (vector 5) v tham gia vo hnh thnh nc tri ( vector 3).
M - Qu - Hng Khnh56C ch hnh thnh vng tri bin Vit NamHng chnh gi
Ty
III. c trng nc tri trong vng bin ng Vit Namc trng v iu kin t
nhin1.1. Cc c trng thy vn1.1.1. Phn b trng nhit v muic im: Vng gn b
trong ma h s phn b nhit v mui c s tng ng so vi vng xa b
57M - Qu - Hng Khnh1.1.1. Phn b trng nhit v mui...
S bin i cu trc thng ng ca nhit v mui.- Khi khng c nc tri hot ng:
phn b thng ng ca nhit thng c 3 lp ring bit.Lp ta ng nht mt (Ht)Lp t
bin nhit (Zt) Lp ta ng nht tng y (Dt)- Khi c s hot ng mnh ca hin
tng nc tri: dy ca lp ta ng nht nhit tng mt gim dn n gi tr cc
tiu.58M - Qu - Hng KhnhKhi hin tng nc tri xy ra mnh v n nh: ton b
ct nc t mt n y bin thnh mt lp nc c gi tr nhit thp v gradient nhit
nh hoc tin ti khng.
Da vo s bin i ca Ht, nhit ca Ht (T0) v gradient nhit ca Zt (Grad
Zt) phn loi v nh gi nh hng ca hin tng nc tri. C th Ht, T0, Grad Zt
cng nh hin tng nc tri nh hng cng mnh v ngc li.
M - Qu - Hng Khnh591.1.1. Phn b trng nhit v mui...
Gi tr T0, Ht, Grad Zt xc nh ti cc trm (8/1980)Kho st thc t nhn
thy cng nc tri ph hp vi quy lut trn.V cu trc phn b thng ng ca mui
cng c quy lut tng t nhng s biu hin ca n km r nt hn do b chi phi mnh
m bi khi nc ngt t lc a ra.
60M - Qu - Hng KhnhTrm lin tcT0 (OC)Ht (m)Grad Zt (OC/m)Phan
Rang24.000.08Phan Thit27.550.20Ph Qu28.8250.27Bch H29.2300.38
1.1. Cc c trng thy vn...1.1.2. nh hng ca gi ma, dng chyVng nc
tri t bc Khnh Ha n Bnh nh c cng yu do s tc ng ca gi ma Ty Nam tng i
yu v khng n nh.Vng bin t Vng Tu n C Mau hin tng nc tri hnh thnh do
s tc ng mnh ca trng gi ma Ty Nam.
61M - Qu - Hng Khnh
1.1.2. nh hng ca gi ma, dng chy...
Trng gi Ty NamTng su 10m:Vn tc theo phng ngang: 38cm/sHng:
60ODng chy khu vc xen b c xu hng tch ra khi.2. Tng su 50m:Dng chy c
xu th i dc theo ng bTng su 150m:Dng chy c xu hng vo b.Khu vc ngoi
khi c xu th i v pha Bc62M - Qu - Hng Khnh
1.1.2. nh hng ca gi ma, dng chy
Trng gi ng BcTng 10m:Trng dng chy khu vc ven b i t Bc xung NamVn
tc phng ngang: 37cm/s2. Tng 50m:Trng dng chy khu vc ven b i t Bc
xung Nam.Pha ngoi dng chy c xu th tch ra khi.3. Tng 150m:Trng dng
chy khu vc ven b i t Bc xung Nam.Ngoi i ny dng chy c xu th hng ra
khi.
63M - Qu - Hng Khnh2. c trng v sinh hc v sinh thi hc2.1. Thc vt
ph duThnh phn loi:To silic: 151 loi (56%)To Hai roi: 113 loi
(42%)Cc nhm khc: 5 loi (2%) Mt t bo thc vt ph duPhn b ng nht cc lp
su khc nhau.Mt t bo cao trong tng u quang t 40 60m.Thng xuyn xut
hin hin tng to n hoa khu vc Mi N, ngoi khi Phan Thit, Mi Dinh.64M -
Qu - Hng Khnh
2. c trng v sinh hc v sinh thi hc...2.3. Ngun li thn mm v 2 mnh
vPhn b thn mm v 2 mnh v vng bin Bnh Thun lin quan cht ch n ngun thc
n t hin tng nc tri.Vng bin huyn Tuy Phong TVPD mt 10x106 t bo/m3
2.4. Sinh hc c binNgun li c bin tp trung ch yu vo khong 100 loi - S
phn b c: do tc ng di thng ca yu t nhit mui. Ma gi TN: c tp trung mt
ln 500-1000kg/gi Ma gi B: c di chuyn xa b tp trung mt rt cao
(>100kg/gi)
65M - Qu - Hng KhnhTi liu tham kho: Hin tng nc tri trong vng bin
Vit Nam ( Bi Hng Long)Tp tr khoa hc v cng ngh bin : V c im hon lu
vng bin nc tri nam Vit Namhttp://en.wikipedia.org/wiki/UpwellingQu
trnh hnh thnh v bin ng nc lnh ven b Ty bin ng( Trn Anh T)Cu trc v
bit trnh nhit cc tm nc tri mnh ( Phm Vn Hun)Qu trnh hi dng hc (Bi
Hng
Long)http://oceanmotion.org/html/background/upwelling-and-downwelling.htmhttp://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/eln/upw.rxmlhttp://esminfo.prenhall.com/science/geoanimations/animations/26_NinoNina.htmlhttp://www.slideshare.net/packeunkyo/chuong-3-4576384
Tc ng ca ENSO n kh hu, thi tit, mi trng v kinh t x hi Vit Nam (
Nguyn c Ng )
M - Qu - Hng Khnh66
