TAILIEUCHUNG - Distribution features of measured wave characteristics in coastal waters of Ninh Thuan province, Vietnam

This paper presents the distribution features of wave characteristics based on the continued measurement wave data with interval of 1 hour from January to December 2013 in coastal waters of Ninh Thuan province. | Distribution features of measured wave characteristics in coastal waters of Ninh Thuan province, Vietnam Journal of Marine Science and Technology; Vol. 18, No. 4A; 2018: 13–20 DOI: DISTRIBUTION FEATURES OF MEASURED WAVE CHARACTERISTICS IN COASTAL WATERS OF NINH THUAN PROVINCE, VIETNAM Le Dinh Mau*, Nguyen Van Tuan Institute of Oceanography, VAST, Vietnam * E-mail: Received: 5-8-2018; accepted: 16-12-2018 Abstract. This paper presents the distribution features of wave characteristics based on the continued measurement wave data with interval of 1 hour from January to December 2013 in coastal waters of Ninh Thuan province. The study results show that the dominant wave directions were in East-North-East (ENE), East (E), South-South-East (SSE) and South-East (SE) with occurrence frequency of , , and respectively. During North-East (NE) monsoon the dominant wave directions were in ENE and E. During South-West (SW) monsoon the dominant wave directions were in SSE and SE. The remaining directions were rare. The maximum values of wave height (Hmax) was m (11/2013), wave period (T) was s (11/2013). The occurrence frequency of Hs ≤ m was , Hs ≈ – was , Hs ≈ – m was , Hs ≈ – m was , Hs > m was and calm wave condition (Hs ≤ m) was . The duration and intensity of wave action were dominant in NE monsoon period. Keywords: Significant wave height (Hs), maximum wave height, Ninh Thuan, monsoon, coastal zone. INTRODUCTION dynamic processes in the coastal zone and have The East Sea is under the influence of strong effects on economic and environment monsoon winds and synoptic systems such as protection activities. Therefore, determination fronts and tropical cyclones. From November of wave characteristics in the nearshore region to

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