NOAA/WDS Paleoclimatology - Shanxi Gonghai Lake, North China, Humid Medieval Warm Period
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Lake. The data include parameters of paleolimnology with a geographic location of China, Eastern Asia. The time period coverage is from 1108 to -50 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
- Cite as: Liu, J.; Chen, F.; Chen, J.; Xia, D.S.; Xu, Q.H.; Wang, Z.L.; Li, Y.C. (2013-05-01): NOAA/WDS Paleoclimatology - Shanxi Gonghai Lake, North China, Humid Medieval Warm Period. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/p32y-v398. Accessed [date].
- Please refer to Credit tab for full citation information.
- doi:10.25921/p32y-v398
- noaa-lake-14490
- NCEI DSI 1200_02
- NCEI DSI 1200_01
noaa-lake-14490
Search Data |
|
Download Data |
|
Distribution Formats |
|
Ordering Instructions | Contact NCEI for other distribution options and instructions. |
Distributor | NOAA National Centers for Environmental Information
ncei.info@noaa.gov |
Dataset Point of Contact | NOAA National Centers for Environmental Information
ncei.info@noaa.gov |
Dataset Point of Contact | Data Center Contact
NOAA World Data Service for Paleoclimatology 828-271-4800 paleo@noaa.gov |
Coverage Description | Date Range: 842 CE to 2000 CE; Date Range: 1108 cal yr BP to -50 cal yr BP; |
Time Period | 842 to 2000 |
Spatial Bounding Box Coordinates |
N: 38.9
S: 38.9
E: 112.233333
W: 112.233333
|
Spatial Coverage Map |
General Documentation |
|
Associated Resources |
|
Publication Dates |
|
Data Presentation Form | Digital table - digital representation of facts or figures systematically displayed, especially in columns
|
Dataset Progress Status | Complete - production of the data has been completed |
Data Update Frequency | Data update frequency not available |
Supplemental Information |
STUDY NOTES: Environmental magnetic record ( χ and S-300) of lacustrine sediments (core GH09B1) from Gonghai Lake, North China. All AMS 14C dates were generated from samples of terrestrial plant macrofossils. The AMS 14C samples were all first prepared with the standard pretreatment (alkali–acid–alkali) and then measured at the AMS Dating Laboratory of the Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, China. All dates were calibrated to calendar years using OXCAL4.1 software using the IntCal04 calibration data set.
ABSTRACT SUPPLIED BY ORIGINATOR: Variations in monsoon strength, moisture or precipitation in eastern China during the MWP reflected by different climatic records have shown apparent discrepancies. Here, detailed environmental magnetic investigations and mineralogical analyses were conducted on lacustrine sediments of Core GH09B1 (2.8 m long) from Gonghai Lake, Shanxi, North China, concerning the monsoon history during the MWP. The results demonstrate that the main magnetic mineral is magnetite. The sediments with relatively high magnetic mineral concentrations were characterized by relatively fine magnetic grain sizes, which were formed in a period of relatively strong pedogenesis and high precipitation. In contrast, the sediments with low magnetic mineral concentrations reflected an opposite process. The variations of magnetic parameters in Gonghai Lake sediments were mainly controlled by the degree of pedogenesis in the lake drainage basin, which further indicated the strength of the Asian summer monsoon. The variations in the χ and S-300 parameters of the core clearly reveal the Asian summer monsoon history over the last 1200 years in the study area, suggesting generally abundant precipitation and a strong summer monsoon during the Medieval Warm Period (MWP, AD 910–1220), which is supported by pollen evidence. Furthermore, this 3–6-year resolution environmental magnetic record indicates a dry event around AD 980–1050, interrupting the generally humid MWP. The summer monsoon evolution over the last millennium recorded by magnetic parameters in sediments from Gonghai Lake correlates well with historical documentation (North China) and speleothem oxygen isotopes (Wanxiang Cave), as well as precipitation modeling results (extratropical East Asia), which all indicate a generally humid MWP within which centennial-scale moisture variability existed. It is thus demonstrated that environmental magnetic parameters could be used as an effective proxy for monsoon climate variations in high-resolution lacustrine sediments. |
Purpose | Records of past climate and environment derived from lake sediment records. Parameter keywords describe what was measured in this dataset. Additional summary information can be found in the abstracts of papers listed in the dataset citations. |
Dataset Citation |
|
Cited Authors |
|
Originators |
|
Publishers |
|
Theme keywords | Global Change Master Directory (GCMD) Science Keywords
|
Data Center keywords | Global Change Master Directory (GCMD) Data Center Keywords
|
Place keywords |
|
Use Constraints |
|
Access Constraints |
|
Fees |
|
Last Modified: 2023-09-01
For questions about the information on this page, please email: ncei.info@noaa.gov