Multi-proxy records of Holocene hydroclimatic and environmental changes on the southern coast of South Korea

Holocene hydroclimate reconstruction based on pollen, XRF, and grain-size analyses and its implications for past societies of the Korean Peninsula

“…In summer, warm seawater of the KC induces energetic evaporation and wind convergence along its route, which result in enhanced ascent motions in the troposphere and increased precipitation over the nearby regions (Sasaki et al, 2012). Located on the main route of the KC, climate of the Korean Peninsula has also been likely influenced by the same mechanism as indicated by a close connection between the WTP SSTs and EASM intensity on the peninsula (Lee et al, 2020;Lim and Fujiki, 2011;Park et al, 2016). Our present study indicates that greater heat and water vapor supply from the WTP along the KC would have enabled active atmospheric convection and stronger EASM influence over the Korean Peninsula during ca.…”

Holocene hydroclimate reconstruction based on pollen, XRF, and grain-size analysis and its implications for past societies of the Korean Peninsula

“…4f), which is located directly on the path of the KC (Fig. 1a), which is an important contributor to EASM strength in coastal East Asia, where it is a major transport mechanism of heat and moisture from the WTP (Jian et al, 2000;Zhou et al, 2009;Lim and Fujiki, 2011;Hu et al, 2015;Park et al, 2016;Constantine et al, 2019;Lee et al, 2020). During ca.…”

“…For example, although many paleoclimate studies have focused on mainland China as a key region representing East Asia, site-specific and varying imprints of the EASM within the region are being increasingly addressed between the interior and coastal parts of China (Chen et al, 2015b;Zhou et al, 2016;Zhu et al, 2017) as well as between China and Korea (Park et al, 2017). In the Korean Peninsula, the EASM has been suggested to be primarily driven by the Pacific Ocean, in processes such as the Kuroshio Current (KC) flowing from the Western Tropical Pacific (WTP) and the El Niño-Southern Oscillation (ENSO) in the equatorial Pacific (Lim and Fujiki, 2011;Park et al, 2019;Park et al, 2016;Lee et al, 2020). Therefore, more high-resolution studies are needed to examine EASM dynamics closely in relation to oceanic forcing.…”

“…Although pollen analysis has been the most common approach to reconstruct past precipitation changes (Lim and Fujiki, 2011;Park et al, 2019;Lee et al, 2020;Park et al, 2016), this methodology contains physical limitations in enhancing the temporal resolution between samples. In contrast, speleothem-based Holocene EASM reconstructions, which permit finer resolution, have been confined to the last few thousand years in the Korean Peninsula and have not defined a clear link with the Pacific Ocean (Jo et al, 2017;Hong et al, 2012;Yu et al, 2016).…”

Characteristics of the Land and River Aggregates Distribution in Goyang City, Korea

“…홀로세 동안 퇴적이 진행된 것을 지시하며, 하천의 활 동이 홀로세 동안 특정 시기에 집중되지 않고 홀로세 전 기간에 걸쳐 있었던 것으로 여겨진다(Fig.3and Fig.5).고양시 시추공 20GYL03및 20GYL04에서 약 -1m 에서 +2m 고도에서 약 8,000년, 시추공 20GYL20에서 약 +2.5m 고도에서 7,300년의 연대가 산출된 것은 서해 및 남해 연 안에서 약 8000년 시기의 조간대 퇴적층보다(군산: -20m ~-13m, 보성지역:-13m, 여수지역: -8m) 약 10m 이상 높 은 고도를 가지고 있어 해수면 상승에 의한 조간대 퇴적 층이 아닌 육상의 습지환경으로 판단된다(Bak, 2015;Lim et al, 2015;Song et al, 2018;Lee et al, 2020, Lee et al, 2021a, 2021b). 따라서 고양시에서 확인되는 퇴적층 의 발달 양상은 전반적으로 모래 퇴적층으로 대표되는 하천(한강) 환경에서 한강 배후의 습지 환경으로 변화한 것으로 여겨진다.…”