Bohai Sea 135KYr Relative Sea Level Reconstruction ----------------------------------------------------------------------- World Data Center for Paleoclimatology, Boulder and NOAA Paleoclimatology Program ----------------------------------------------------------------------- NOTE: Please cite original reference when using these data, plus the data file URL and date accessed. NAME OF DATA SET: Bohai Sea 135KYr Relative Sea Level Reconstruction LAST UPDATE: 9/2012 (Original receipt by WDC Paleo) See also extended record to 1327KYr, Yi et al. 2015, http://www.ncdc.noaa.gov/paleo/study/17936 CONTRIBUTORS: Yi, L., H. Yu, J.D. Ortiz, X. Xu, X. Qiang, H. Huang, X. Shi, and C. Deng. IGBP PAGES/WDCA CONTRIBUTION SERIES NUMBER: 2012-150 WDC PALEO CONTRIBUTION SERIES CITATION: Yi, L., et al. 2012. Bohai Sea 135KYr Relative Sea Level Reconstruction. IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series # 2012-150. NOAA/NCDC Paleoclimatology Program, Boulder CO, USA. ORIGINAL REFERENCE: Yi, L., H. Yu, J.D. Ortiz, X. Xu, X. Qiang, H. Huang, X. Shi, and C. Deng. 2012. A reconstruction of late Pleistocene relative sea level in the south Bohai Sea, China, based on sediment grain-size analysis. Sedimentary Geology, In Press, Available online 3 September 2012. http://dx.doi.org/10.1016/j.sedgeo.2012.08.007. ABSTRACT: Future anthropogenic sea-level rise and its impact on coastal regions is an important issue facing human civilizations. Due to the short nature of the instrumental record of sea-level change, development of proxies for sea-level change prior to the advent of instrumental records is essential to reconstruct long-term background sea-level changes on local, regional and global scales. Here, we employ numerical methods to partition sediment grain size using a combined database of marine surface and core samples, and to quantitatively reconstruct sea-level variation since the late Pleistocene in the south Bohai Sea, China. Our sea-level reconstruction indicates that relative sea-level changes in the southern Bohai Sea track global sea-level variation for the duration of the record. The results also indicate substantial regression from 70 to 30 cal kyr BP, and potentially subarial exposure from 38 to 20 cal kyr BP. Our results document the feasibility of reconstructing relative sea-level change by numerical partitioning of sediment grain size data, demonstrating the potential for future applications. GEOGRAPHIC REGION: Bohai Sea, China, coastal Northwest Pacific PERIOD OF RECORD: 135.6 - 1.9 KYrBP FUNDING SOURCES: DATA FILE URLS: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleocean/relative_sea_level/bohai2012rsl.txt ftp://ftp.ncdc.noaa.gov/pub/data/paleo/paleocean/relative_sea_level/bohai2012rsl.xls See also extended record to 1327KYr, Yi et al. 2015, http://www.ncdc.noaa.gov/paleo/study/17936 DESCRIPTION: Relative sea level (RSL) reconstruction for the south Bohai Sea, China over the last 135Kyr, based on sediment grain size data from coastal core LZ908 and Bohai Sea surface sediment samples. Core LZ908: 37°09'N, 118°58'E, 6 m a.s.l. See also extended record to 1327KYr, Yi et al. 2015, http://www.ncdc.noaa.gov/paleo/study/17936 DATA: Yi et al. 2012 Bohai Sea Relative Sea Level Reconstruction RWL: reference water level (m) Reconstructed Predicted interval of Bootstrap estimation at 95% confidence level Year(ka) RWL(m) Low Limit(m) Upper Limit(m) 1.9 1.7 1.2 2.2 2.1 0.5 -0.2 1.2 2.2 0.9 0.2 1.5 2.4 0.3 -0.5 1 3.8 0.7 0 1.3 4 0.6 0 1.3 4.1 0.8 0.2 1.5 7.3 1.4 0.9 2 7.7 1.8 1.4 2.3 7.9 3.1 2.7 3.6 8 3.8 3.2 4.3 8.2 3.4 3 3.9 8.3 3.5 3 4 8.5 3.7 3.2 4.2 9.5 3.7 3.2 4.2 9.6 4.1 3.5 4.7 9.8 3.7 3.2 4.2 10.5 0.4 -0.3 1.1 11.6 1.6 1.1 2.1 12.6 2.2 1.7 2.6 13.7 1.7 1.2 2.2 14.8 0.8 0.1 1.4 15.8 0.6 -0.1 1.3 20 -0.2 -1 0.7 21.1 -0.4 -1.4 0.5 25 0 -0.8 0.8 29 -0.6 -1.6 0.3 34.4 -0.1 -0.9 0.7 35.4 0.5 -0.1 1.2 36.3 0.6 -0.1 1.3 37.3 -0.5 -1.4 0.5 38.2 0.1 -0.6 0.9 40.1 0.7 0.1 1.4 41.1 0.3 -0.4 1 42 0.4 -0.3 1.1 43 1.1 0.5 1.7 46.7 0.4 -0.3 1.1 50.4 0.9 0.3 1.5 55.7 0.1 -0.6 0.9 56.5 1 0.4 1.6 57.1 1.4 0.9 1.9 57.6 1.6 1.1 2.1 58.2 1.6 1.1 2.1 58.7 1.8 1.3 2.2 59.5 1.8 1.3 2.3 60 1.8 1.4 2.3 60.6 2.2 1.8 2.6 61.3 2.2 1.8 2.6 62.6 2.2 1.8 2.6 64 2.8 2.4 3.2 66.6 2.4 2 2.8 68 2.5 2.1 2.9 69.3 2.8 2.4 3.2 70.6 2.6 2.2 3 71.7 2.8 2.4 3.2 72.9 2.8 2.4 3.2 75.1 3.8 3.3 4.3 75.4 4.9 4.2 5.6 76.6 4.6 4 5.3 77.7 4.8 4.1 5.6 78.4 4.8 4.1 5.4 78.9 4.8 4.1 5.5 79.4 4.6 4 5.3 80.6 4.3 3.7 4.9 81.1 4.3 3.7 4.9 81.7 4.3 3.7 4.9 82.2 4.6 4 5.3 82.7 5.1 4.3 5.8 83.2 4.2 3.6 4.8 83.7 4.9 4.1 5.6 84.4 3.5 3 3.9 85.2 2.9 2.4 3.3 86 2.7 2.3 3.1 86.7 2.7 2.3 3.1 87.5 2.5 2.1 3 88.2 3.4 3 3.9 88.9 3 2.6 3.4 90.2 2.5 2.1 2.9 91.6 2.2 1.7 2.6 93 2.8 2.4 3.2 100 4.3 3.7 4.9 100.4 4.6 4 5.3 100.8 4.5 3.9 5.2 101.4 3.8 3.3 4.3 101.9 3.8 3.3 4.4 102.3 3.7 3.2 4.2 102.7 3.7 3.2 4.2 103.1 3.6 3.1 4.1 103.5 3.7 3.2 4.2 103.9 3.6 3.1 4 104.3 3.4 2.9 3.8 104.7 2.9 2.5 3.3 105.1 4.2 3.6 4.8 105.6 3.6 3.2 4.1 106 3.7 3.2 4.2 106.4 2.1 1.7 2.6 118.3 1.6 1.1 2.1 121.7 1.3 0.7 1.8 122.5 1.7 1.2 2.2 124.2 1.5 1 2 125.8 1.5 1 2 127.8 3.1 2.6 3.5 129.7 1.2 0.6 1.7 131.7 4.2 3.6 4.8 133.7 3.8 3.3 4.3 135.6 3.3 2.9 3.8