The dataset contains the inclination and relative paleointensity (RPI) data during 11.5-14.5 ka of core NC2，which is located at the northen South China Sea (114.27E, 21.67N). The age of the core are reconstructed based on 12 Accelerator Mass Spectrometry(AMS) radiocarbon ages. The RPI results are reconstructed using a ratio of natural remanent magnetization (NRM) and saturation isothermal remanence (SIRM). The inclination results were isolated from the natureal remanent magnetization between 20 and 50 mT. Three intervals of abonormal shallow inclination results between 11.5-14.5ka indicate an rapid and frequent geomagnetic excursion event.

Sample Information: Core NC2 was selected from an ocean depth of 53.3m in the northern South China Sea (114.27E, 21.67), with a total length of 40.5 m. The core was split in half and continuously sampled by pushing plastic cubic boxes (2×2×2 cm) into the central axis of the core for paleomgnetic measurements. Core NC2 was sampled during South China Sea Scientific Research Program of Sun Yat-sen University in 2017 summer.Methods: NRM were demagnetized by an alternating field (AF) performed on the box samples with fields of 0-80 mT in 5-mT step and measured on 2G-760 superconducting rock magnetometer. NRM between 20-50mT are analysed to obtain inclination. SIRM were imparted with DC fields of 1 T, then demagnetized using10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80 mT AF field. RPI results was constructed using the equation: RPI=NRM(20-50mT)/SIRM (20-50mT).