Response of Internal Waves to Typho(精简3篇)

Response of Internal Waves to Typhoon

Article 1: Impact of Typhoons on Internal Waves in the Ocean

Introduction:

Typhoons, also known as hurricanes or cyclones, are powerful tropical storms that can wreak havoc on coastal areas. While the immediate effects of typhoons are well-known, such as strong winds and heavy rainfall, their impact on the ocean's internal waves is often overlooked. Internal waves are large-scale disturbances that propagate beneath the ocean's surface and play a crucial role in various oceanic processes. This article aims to explore the response of internal waves to typhoons and the potential implications for marine ecosystems.

Internal Waves and their Importance:

Internal waves are gravity-driven disturbances that occur within the ocean's density stratified layers. These waves can be generated by a variety of mechanisms, including tides, winds, and underwater topography. They play a vital role in mixing water masses, transporting nutrients and heat, and influencing the distribution of marine organisms. Understanding the response of internal waves to typhoons is essential for predicting and mitigating the potential impacts on marine ecosystems.

Impact of Typhoons on Internal Waves:

Typhoons generate strong winds and intense surface waves, which can penetrate into the ocean's interior and interact with the underlying internal waves. The energy transferred from the typhoon's winds to the internal waves can modify their amplitude, frequency, and propagation characteristics. In some cases, typhoons can enhance the energy of internal waves, leading to increased mixing and nutrient upwelling in coastal regions. However, in other instances, typhoons can dissipate or dampen internal waves, disrupting their usual patterns and affecting the transport of heat and nutrients.

Implications for Marine Ecosystems:

The response of internal waves to typhoons has significant implications for marine ecosystems. Enhanced mixing caused by intensified internal waves can bring nutrient-rich waters to the surface, promoting the growth of phytoplankton and supporting higher trophic levels. This can benefit fisheries and other marine-dependent industries. On the other hand, disruptions in internal wave patterns can affect the distribution of planktonic larvae, potentially impacting the recruitment of commercially important species. Furthermore, changes in temperature and nutrient availability resulting from altered internal waves can influence species composition and biodiversity in coastal areas.

Conclusion:

Typhoons have a profound impact on the ocean's internal waves, which are essential for various oceanic processes and the functioning of marine ecosystems. Understanding the response of internal waves to typhoons is crucial for predicting and managing the potential impacts on coastal regions. Further research and monitoring are needed to unravel the complex interactions between typhoons and internal waves and their ecological consequences. This knowledge can inform the development of effective mitigation strategies and enhance our understanding of the dynamic nature of the ocean.

Article 2: Observing and Modeling the Response of Internal Waves to Typhoons

Introduction:

Typhoons are powerful atmospheric disturbances that can induce significant changes in the ocean's physical and biological properties. Understanding the response of internal waves to typhoons is essential for predicting and mitigating the potential impacts on marine ecosystems. This article aims to discuss the techniques used to observe and model the response of internal waves to typhoons and their implications for oceanographic research.

Observing Internal Waves and Typhoons:

Observing internal waves and typhoons in the ocean is challenging due to their transient and dynamic nature. However, advancements in remote sensing technologies, such as satellite altimetry and synthetic aperture radar, have provided valuable insights into the spatial and temporal distribution of internal waves and typhoon-induced surface waves. In-situ measurements using instruments like acoustic Doppler current profilers and conductivity-temperature-depth sensors have also contributed to our understanding of the interaction between internal waves and typhoons.

Modeling Internal Waves and Typhoons:

Numerical models are powerful tools for simulating the response of internal waves to typhoons. These models can simulate the generation, propagation, and dissipation of internal waves under different environmental conditions, including the presence of typhoons. By incorporating atmospheric and oceanic data, such as wind speed, sea surface temperature, and bathymetry, models can predict the behavior of internal waves and their response to typhoons. These models play a crucial role in understanding the complex interactions between atmospheric and oceanic processes.

Implications for Oceanographic Research:

The response of internal waves to typhoons has important implications for oceanographic research. By observing and modeling these interactions, scientists can gain insights into the physical and biological processes that occur within the ocean. This knowledge can be used to improve climate models, predict the spread of pollutants and harmful algal blooms, and understand the impact of climate change on marine ecosystems. Additionally, understanding the response of internal waves to typhoons can help in developing accurate storm surge predictions, which are essential for coastal planning and disaster management.

Conclusion:

Observing and modeling the response of internal waves to typhoons is crucial for understanding the complex interactions between atmospheric and oceanic processes. These interactions have significant implications for marine ecosystems and various oceanographic research areas. Advances in remote sensing technologies and numerical models have provided valuable tools to study these interactions. Continued research and monitoring efforts are necessary to enhance our understanding of the response of internal waves to typhoons and their ecological consequences. This knowledge can inform management strategies and contribute to a better understanding of the dynamic nature of the ocean.

Response of Internal Waves to Typho 篇三

Response of Internal Waves to 2005 Typhoon Damrey over the Northwestern Shelf of the South China Sea

Continuous observation of sea water temperature and current was made at Wenchang Station (19°35′N, 11

2°E) in 2005. The data collected indicate vigorous internal waves of both short periods and tidal and near-inertial periods. The temperature and current time series during 18-30 September were examined to describe the upper ocean internal wave field response to Typhoon Damrey (0518). The strong wind associated with the typhoon, which passed over the sea area about 45 km south of Wenchang Sta- tion on 25 September, deepened the mixed layer depth remarkably. It decreased the mixed layer temperature while increasing the deep layer temperature, and intensified the near-inertial and high-frequency fluctuations of temperature and current. Power spectra of temperature and current time series indicate significant deviations from those obtained by using the deep ocean internal wave models characterized by a power law. The frequency spectra were dominated by three energetic bands: around the inertial frequency (7.75× 10-6 Hz), tidal frequencies (1.010-25 to 2.4×10-5 Hz), and between 1.4×10-4 and 8.3 × 10-4 Hz. Dividing the field data into three phases (before, during and after the typhoon), we found that the typhoon enhanced the kinetic energy in nearly all the frequency bands, es- pecially in the surface water. The passage of Damrey made a major contribution to the horizontal kinetic energy of the total surface current variances. The vertical energy density distribution, with its peak value at the surface, was an indication that the energy in- jected by the strong wind into the surface current could penetrate downward to the thermocline.

作 者： WANG Gang QIAO Fangli HOU Yijun DAI Dejun LIN Min ZHANG Qilong WANG Gang YIN Baoshu 作者单位： WANG Gang(Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, P. R. China;First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, P. R. China;Key Laboratory of Marine Science and Numerical Modeling (MASNUM), SOA, Qingdao 266061, P. R.China)

QIAO Fangli,DAI Dejun(First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, P. R. China;Key Laboratory of Marine Science and Numerical Modeling (MASNUM), SOA, Qingdao 266061, P. R.China)

HOU Yijun,ZHANG Qilong,WANG Gang,YIN Baoshu(Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, P. R. China)

LIN Min(College of Mathematical Sciences, Ocean University of China, Qingdao 266071, P. R. China)

刊 名：中国海洋大学学报（英文版） ISTIC 英文刊名： JOURNAL OF OCEAN UNIVERSITY OF CHINA 年，卷(期)： 20087(3) 分类号： P7 关键词： South China Sea internal waves near-inertial oscillation Typhoon Damrey