Hydrodynamic variations and human activities have influenced sediment fluxes in the pearl river delta since the late holocene

Climate change and human activity can both exert a role in the river discharge sediment load deltas when sea level remains relatively stable. The Pearl River Delta constitutes metropolitan region of Guangdong–Hong Kong–Macau Greater Bay Area, its evolution past future impacts sustainable development this region. In manuscript, core situated northern South China Sea, adjacent to Qiao Island Zhuhai city Delta, was selected investigate hydrodynamic variation influenced by tropical processes flux imposed activities. Using paleosecular variations (PSVs) geomagnetic field correlations constrained seven radiocarbon ages, an ∼2.5 kyr chronology provided for sediments ∼2.8 m length. magnetic fabric results suggest that deposition two types hydrodynamic-weak energy modulated El Niño–Southern Oscillation (ENSO) higher regulated high-frequency storms. cyclic degree anisotropy susceptibility ( P ) indicate periodic changes at approximately 300 100 years, which were forced ENSO activity, while ratio lineation with foliation q value) implies flow period 1.3–1.9 kyr, arising from strong Moreover, high saturation remanence (SIRM) introduces more flux, is impacted growing during 1.0–1.6 kyr.