5332 2015 Research Report of Tsunami Engineering Vol.32 2015 53 60

Vo Cong HOANG

2001 3 11

Tanaka et al.1 , Udo et al.2

Hoang 3

Hoang 4

2011

1

45km 229.1km2

Tanaka et al.5

2.5km

Tanaka et al.6

1

54 32 2015

2

Tanaka et al.5

3

Tanaka et al.6

4

1

y t x

3

2

55

Barrer7 Crank8

Larson et al.9 Larson et al.10

4

Larson et al.9

2

Y0

erfc B

24

L

3

2 3

4

5

6

7

8

9

10

4 5

Ls=L B

2 3

Case 1B=1040m Ls=1310m 5 Case 2

B=120m Ls=1480m 62 3

5

6

6km

1K

11

H Cg

B s

n

DC DB

Hoang 3

320m2/day 340m2/day

K 11 K=0.0311 11 K

=280m2/day

56 32 2015

Hoang 3

7 2 3 Case 1

t=515

3 t=1755

2

2 t Y1=Y0

3

12

212

7x=0m x=L/2

8x=0m 3

t=2000Y1 2t=10 104

x=L/2 3t=2000 Y1

2 t=10 104

Y0

6 Case 2

5 Case 1

7 Case 1

57

8 Case 1

a x=0

b x=L/2

Case 29 10

Ls B 9

10

9 Case 2

58 32 2015

10 Case 2

35

3 5

x=0 t=12 99%

Te

Ls 4

13

5

14

a x=0

b x=L/2

15

16

14 11

T*e L*s

11

59

2 3

12 13x=0m

Y0

2Dean12

13

312

13 Case 2

1 Tanaka, H., Tinh, N. X., Umeda, M., Hirao, R., Pradjoko, E., Mano, A. and Udo, K.: Coastal and estuarine morphology changes induced by the 2011 Great East Japan earthquake tsunami, Coastal Engineering Jour-

nal, Vol.54 (1), 2012. 2 Udo, K., Sugawara, D., Tanaka, H., Imai, K.

and Mano, A.: Impact of the 2011 Tohoku Earthquake and Tsunami on beach morphology along the northern Sendai Coast, Coast-

al Engineering Journal, Vol.54 (1), 2012. 3 Vo Cong Hoang :

sink

B2 Vol. B2 70, pp. I_506 I_510, 2014.

4 Vo Cong HoangNguyen Trung Viet:

B2Vol.B2 70, pp.I_521 I_525, 2014.

5 Tanaka, H., Adityawan, M. B. and Mano, A.: Morphological changes at the Nanakita River mouth after the Great East Japan Tsunami of 2011, Coastal Engineering, Vol.86,

12 Case 1

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pp.14 26, 2014.6 Tanaka, H., Adityawan, M. B., Udo, K. and

Mano, A.: Breaching and tsunami water drainage at old river mouth locations during the 2011 Tsunami, Proceedings of 34th International Conference on Coastal Engineering, 2014.

7 Barrer, R. M.: Diffusion in and through Sol-

ids, Cambridge University Press, 1941.8 Crank, J.: The Mathematics of Diffusion,

Clarendon Press, 1975.9 Larson, M., Hanson, H. and Kraus, N. C.:

Analytical solutions of the one line model of shoreline change, Technical Report CERC-

87-15, U.S. Army Engineer Waterways Ex-

periment Station, 1987.

10 Larson, M., Hanson, H. and Kraus, N. C.: Analytical solutions of one line model for shoreline change near coastal structures, J.

Waterway, Port, Coastal, Ocean Engineer-

ing, Vol.123, No.4, pp.180 191, 1997.11 Muhammad Hasanudin

: 21

pp.55 59, 1996.12 Dean, R.: Beach Nourishment Theory and

Practice , World Scienti c, 420p, 2003.13

178p2005