the scattering of a continental shelf wave by a long thin barrier lying parallel to the coast

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OLR (1985)32 (12) A. Physical Oceanography 997 mathematical model gives results in agreement with the observations. Using the model the ter- and quartodiurnal tides have been tested; observations concerning these constituents are uncertain, due to the small amplitude. Results show a behaviour which agrees with the larger tides, but is more dependent on basin geometry. Cattedra di Misure Oceanograf., Univ. di Trieste, Italy. 85:6933 Seung, Y.-H. and S.-R. Lee, 1984. A numerical experiment of tides in Chinhae Bay [Korea] by the finite element method. Bull. Korea Ocean Res. Dev. Inst., 6(1-2):31-36. (In Korean, English abstract.) Ocean Engrg. Lab., KORDI, Seoul, Korea. A160. Waves, oscillations 85:6934 Aida, Isamu, 1984. An estimate of tsunamis generated by volcanic eruptions: the 1741 eruption of Oshima-Ohshima, Hokkaido [Japan]. Earth- quake Res. Inst., Univ. of Tokyo, Japan. Bull. Earthq. Res. Inst., Univ. Tokyo, 59(4):519-531. (In Japanese, English abstract.) 85:6935 Baba, M. and C.M. Harish, 1985. Wave height and period distribution off the southwest coast of India. Indian J. mar. Sci., 14(1):1-8. Centre for Earth Sci. Studies, Regional Centre, Cochin 682 018, India. 85:6936 Cicconi, Giuseppe, Ignazio Dagnino and Alberto Albert, 1985. Mean length of runs of sea waves recorded in the Gulf of Genoa. Boll. Oceanol. teor. appl., 3(2): 103-112. Investigations in the Gulf of Genoa on sequences of waves exceeding some particular height and the mean length of such runs closely match results obtained by Goda (1976) on the Japanese coast, and Rye (1974) off Norway. Ist. Geofis. e Geodet., Univ. di Genoa, Italy. (fcs) 85:6937 Hatori, Tokutaro, 1984. Behavior of the Tokai tsunamis of 1707 and 1854 in the Kanto and East Izu districts [Japan]. Bull. Earthq. Res. lnsl., Univ. Tokyo, 59(4):501-518. (In Japanese, Eng- lish abstract.) 85:6938 Holyer, J.Y. and L.A. Mysak, 1985. Trench wave generation by incident baroclinic Rnssby waves. J. phys. Oceanogr, 15(5):593-603. We consider the response of a two-layer fluid in a coastal trench to the incidence of low-frequency Rossby waves from the open ocean. In both the lzu and Peru trenches, deep longshore currents are generated by annual-period Rossby waves whose interracial amplitude is 5 m. The longshore current speed is particularly large when the longshore wavenumber and frequency of the incident wave are close to the complex roots of the free trench-wave dispersion relation for a fi-plane. It is conjectured that forced trench waves of the type described here may be detected in the Izu Trench from meas- urements of subthermocline currents. Sch. of Math., Univ. of Bristol, BS8 1TP, UK. 85:6939 Hsieh, W.W. and V.T. Buchwald, 1985. The scat- tering of a continental shelf wave by a long thin barrier lying parallel to the coast. J. phys. Oceanogr., 15(5):524-532. In the channel between the barrier and the coast, much of the incident shelf wave energy is transferred to the zero (or Kelvin) mode. Seaward of the barrier. substantial energy transfer from an incident second- mode shelf wave to the first mode is possible. Downstream from the barrier, the incident mode may vanish, leaving a different mode to dominate. Dept. of Oceanogr., Univ. of British Columbia, Vancouver, BC V6T IW5, Canada. 85:6940 Kang, S.W., C.S. Kim and J.K. Choi, 1984. Wave hindcast with the DSA-5 model in the seas adjacent to Korea. Bull. Korea Ocean Res. Dev. Inst., 6(1-2):34-47. (In Korean, English abstract.) Ocean Environ. Engrg. Lab., KORDI, Seoul, Korea. 85:6941 Laing, A.K., 1985. An assessment of wave obser- vations from ships in southern oceans. J. Climate appl. Met., 24(5):481-494. There is very little consistency in the reporting of wind wave and swell periods and swell directions. Heights fare considerably better, although it is shown that one observer still fails to account for at least 50% of the variance in the observations of another observer. Some comparisons of ship-re- ported wave heights with measurements show a high bias (at least 0.5 m) in the observations. Despite the inconsistencies, the intercomparisons show that the

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Page 1: The scattering of a continental shelf wave by a long thin barrier lying parallel to the coast

OLR (1985) 32 (12) A. Physical Oceanography 997

mathematical model gives results in agreement with the observations. Using the model the ter- and quartodiurnal tides have been tested; observations concerning these constituents are uncertain, due to the small amplitude. Results show a behaviour which agrees with the larger tides, but is more dependent on basin geometry. Cattedra di Misure Oceanograf., Univ. di Trieste, Italy.

85:6933 Seung, Y.-H. and S.-R. Lee, 1984. A numerical

experiment of tides in Chinhae Bay [Korea] by the finite element method. Bull. Korea Ocean Res. Dev. Inst., 6(1-2):31-36. (In Korean, English abstract.) Ocean Engrg. Lab., KORDI, Seoul, Korea.

A160. Waves, oscillations

85:6934 Aida, Isamu, 1984. An estimate of tsunamis generated

by volcanic eruptions: the 1741 eruption of Oshima-Ohshima, Hokkaido [Japan]. Earth- quake Res. Inst., Univ. of Tokyo, Japan. Bull. Earthq. Res. Inst., Univ. Tokyo, 59(4):519-531. (In Japanese, English abstract.)

85:6935 Baba, M. and C.M. Harish, 1985. Wave height and

period distribution off the southwest coast of India. Indian J. mar. Sci., 14(1):1-8. Centre for Earth Sci. Studies, Regional Centre, Cochin 682 018, India.

85:6936 Cicconi, Giuseppe, Ignazio Dagnino and Alberto

Albert, 1985. Mean length of runs of sea waves recorded in the Gulf of Genoa. Boll. Oceanol. teor. appl., 3(2): 103-112.

Investigations in the Gulf of Genoa on sequences of waves exceeding some particular height and the mean length of such runs closely match results obtained by Goda (1976) on the Japanese coast, and Rye (1974) off Norway. Ist. Geofis. e Geodet., Univ. di Genoa, Italy. (fcs)

85:6937 Hatori, Tokutaro, 1984. Behavior of the Tokai

tsunamis of 1707 and 1854 in the Kanto and East Izu districts [Japan]. Bull. Earthq. Res. lnsl., Univ. Tokyo, 59(4):501-518. (In Japanese, Eng- lish abstract.)

85:6938 Holyer, J.Y. and L.A. Mysak, 1985. Trench wave

generation by incident baroclinic Rnssby waves. J. phys. Oceanogr, 15(5):593-603.

We consider the response of a two-layer fluid in a coastal trench to the incidence of low-frequency Rossby waves from the open ocean. In both the lzu and Peru trenches, deep longshore currents are generated by annual-period Rossby waves whose interracial amplitude is 5 m. The longshore current speed is particularly large when the longshore wavenumber and frequency of the incident wave are close to the complex roots of the free trench-wave dispersion relation for a fi-plane. It is conjectured that forced trench waves of the type described here may be detected in the Izu Trench from meas- urements of subthermocline currents. Sch. of Math., Univ. of Bristol, BS8 1TP, UK.

85:6939 Hsieh, W.W. and V.T. Buchwald, 1985. The scat-

tering of a continental shelf wave by a long thin barrier lying parallel to the coast. J. phys. Oceanogr., 15(5):524-532.

In the channel between the barrier and the coast, much of the incident shelf wave energy is transferred to the zero (or Kelvin) mode. Seaward of the barrier. substantial energy transfer from an incident second- mode shelf wave to the first mode is possible. Downstream from the barrier, the incident mode may vanish, leaving a different mode to dominate. Dept. of Oceanogr., Univ. of British Columbia, Vancouver, BC V6T IW5, Canada.

85:6940 Kang, S.W., C.S. Kim and J.K. Choi, 1984. Wave

hindcast with the DSA-5 model in the seas adjacent to Korea. Bull. Korea Ocean Res. Dev. Inst., 6(1-2):34-47. (In Korean, English abstract.) Ocean Environ. Engrg. Lab., KORDI, Seoul, Korea.

85:6941 Laing, A.K., 1985. An assessment of wave obser-

vations from ships in southern oceans. J. Climate appl. Met., 24(5):481-494.

There is very little consistency in the reporting of wind wave and swell periods and swell directions. Heights fare considerably better, although it is shown that one observer still fails to account for at least 50% of the variance in the observations of another observer. Some comparisons of ship-re- ported wave heights with measurements show a high bias (at least 0.5 m) in the observations. Despite the inconsistencies, the intercomparisons show that the