A review of research on the upwelling in the Taiwan Strait

Research on upwelling in the Taiwan Strait, based on hydrographic observations and numerical modeling, has indicated that there are four upwelling regions in the Strait: along the southwestern coast of the Taiwan Strait (SW-upwelling region), along the northwestern coast of the Taiwan Strait (NW-upwelling region), near the Taiwan Bank (TB-upwelling region), and around the Penghu Islands (PH-upwelling region). These upwellings are principally induced by the southwesterly monsoon and the ascending movement of the northward, near-bottom current along the uplifting bottom topography. The SW-upwelling and NW-upwelling occur during the southwesterly monsoon period in summer, and the TB-upwelling and PH-upwelling occur year- round with varying strength and scale.