湛江湖光岩玛珥湖全新世粒度变化数据集

湛江湖光岩玛珥湖全新世粒度变化数据集是作者于2009年11月在广东省湛江市湖光岩玛珥湖实地采样基础上整理得到。玛珥湖采样点位置为21&deg08′38″N，110&deg16′46″E，共采集了岩芯A（855cm）和B（926cm），A与B相距5.2 m，水深16.2 m。A和B采样点分别用来测量沉积物粒度和测年。沉积物粒度测试使用的是岩芯A，以1cm为间距采样，共获得855个样品。采用Mastersize 2000型激光粒度仪，测量范围为0.02-2000 μm。岩芯B用于测年。最后得到湛江湖光岩玛珥湖全新世粒度变化数据集。该数据集包括：（1）采样点的地理位置数据；（2）湖光岩玛珥湖沉积物年代、各粒级组分含量、中值粒径和550℃烧失量数据；（3）湖光岩玛珥湖沉积物年代和Ti元素含量数据。该数据集存储为.kmz、shp和.xlsx格式，共9个数据文件，数据量为81.1 KB（压缩为2个文件，78.1 KB）。该数据集支持“湖光岩玛珥湖沉积物的外源输入部分主要来自其小流域；沉积物粒径的变化主要受降雨量影响”的结论。相关研究成果发表在《湖泊科学》2016年28卷第5期上。

The Holocene grain size variation dataset of Huguangyan Maar Lake in Zhanjiang was compiled based on field sampling conducted by the authors in November 2009 at Huguangyan Maar Lake, Zhanjiang City, Guangdong Province. The sampling sites are located at 21°08′38″N, 110°16′46″E. Two sediment cores, Core A (855 cm in length) and Core B (926 cm in length), were collected, with a distance of 5.2 m between the two sites, and the water depth at the sites was 16.2 m. Core A and Core B were respectively used for sediment grain size measurement and chronological dating. For sediment grain size testing, Core A was sampled at 1 cm intervals, yielding a total of 855 samples. A Mastersize 2000 laser particle size analyzer was employed, with a measurement range of 0.02–2000 μm. Core B was used for dating. Ultimately, the Holocene grain size variation dataset of Huguangyan Maar Lake in Zhanjiang was established. This dataset includes: (1) Geographic location data of the sampling sites; (2) Data on sediment chronology, particle size fraction contents, median grain size, and loss-on-ignition at 550 °C of Huguangyan Maar Lake sediments; (3) Data on sediment chronology and Ti element content of Huguangyan Maar Lake sediments. This dataset is stored in .kmz, .shp, and .xlsx formats, totaling 9 data files with a total size of 81.1 KB (compressed into 2 files with a total size of 78.1 KB). This dataset supports the conclusion that the exogenous input component of Huguangyan Maar Lake sediments mainly comes from its small watershed; the variation in sediment grain size is mainly controlled by rainfall. The relevant research findings were published in *Journal of Lake Sciences*, Volume 28, Issue 5, 2016.

搜集汇总

背景与挑战

背景概述

该数据集记录了湛江湖光岩玛珥湖全新世沉积物的粒度变化数据，用于研究全新世期间的气候变化。数据集包含沉积物采样点的地理位置、粒度组分含量、中值粒径、烧失量以及年龄和钛含量等信息，支持了湖光岩玛珥湖沉积物粒度变化主要由降水决定的发现。