本数据包括祁连山老虎沟12号冰川2012-2014年单点物质平衡数据及2015年高程带物质平衡数据。基于花杆/雪坑法通过野外定位观测获取，物质平衡是冰川表面积累量与消融量的代数和，反映了冰川表面单位面积上相对于上一个物质平衡年末，冰面的物质平衡平均升降变化状况。", "ds_source": "
从每年的５月底或６月初开始，9月底或10月初结束，在观测期间内平均每月观测一次。
\n\n", "ds_process_way": "观测工作有专人负责，雪坑挖取过程中避免太阳光直射，雪冰密度测量采用称重法，根据多次测量结果取平均值获取。
\n\n", "ds_quality": "严格按照观测要求及操作规范进行观测和数据记录。", "ds_acq_start_time": "2012-01-01 00:00:00", "ds_acq_end_time": "2015-12-31 00:00:00", "ds_acq_place": "祁连山老虎沟12号冰川", "ds_acq_lon_east": 96.51666666666667, "ds_acq_lat_south": 39.46666666666667, "ds_acq_lon_west": 96.51666666666667, "ds_acq_lat_north": 39.46666666666667, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 13849, "ds_files_count": 2, "ds_format": "Excel", "ds_space_res": null, "ds_time_res": "年", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "151dbe26-801d-43a1-9a93-2f90e4acdbc4.jpg", "ds_thumb_from": 2, "ds_ref_way": "陈记祖，2012-2015年祁连山老虎沟12号冰川物质平衡数据集，国家冰川冻土沙漠科学数据中心(www.ncdc.ac.cn)，2020，doi：10.12072/ncdc.CCI.db0048.2020", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "b3c14ec7-0cc1-417f-8986-b6fc1352242f", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": null, "quality_level": 3, "publish_time": "2020-12-03 08:54:57", "last_updated": "2023-05-16 17:34:38", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.CCI.2020.75", "i18n": { "en": { "title": "Material balance data set of Laohugou glacier No.12, Qilian Mountains from 2012-2015", "ds_format": "", "ds_source": "
It starts from the end of may or early June and ends at the end of September or early October every year. During the observation period, it is observed once a month on average.
\n", "ds_quality": "Observe and record the data in strict accordance with the observation requirements and operation specifications.", "ds_ref_way": "Chen Jizu, material balance data set of Laohugou glacier No.12 in Qilian Mountains, 2012-2015, national glacier frozen soil desert scientific data center（ www.ncdc.ac.cn )，2020，doi：10.12072/ ncdc.CCI.db0048 .2020", "ds_abstract": "
This data includes the single point material balance data of Laohugou glacier No.12 in Qilian Mountains from 2012 to 2014 and the material balance data of elevation zone in 2015. Based on the flower pole / snow pit method, the material balance is the algebraic sum of the accumulated amount and the melting amount of the glacier surface area, which reflects the average fluctuation of the material balance of the ice surface per unit area relative to the end of the previous material balance.\nAccording to the field observation data, the single point material balance of flower rod observation is as follows: (1) BN, Bi, BS and BSI represent the single point material balance, glacier ice, snow cover and additional ice balance values respectively. The calculation results are marked on the large-scale glacier map and topographic map, and the ablation and accumulation values are drawn within the contour range with a spacing of 50m. In addition, the water equivalent accumulated by the ablation of flower stalks and snow pits at 4700m is calculated. The accumulated and ablated areas between two adjacent contours were measured respectively, and then the pure accumulation C, pure ablation a and mass balance value B of glaciers in the melting area were calculated step by step.\nBy using ArcGIS software and using spatial interpolation method to draw the contour map, the material balance of the whole glacier can be calculated. The annual net balance B of the whole glacier is: 𝐵 = ∑⻕⻕ (⻚⻕ / s⻕1) (2), where Si is the projected area of two adjacent isolines, Bi is the average net balance of Si, n is the total number of Si, and S is the total area of glacier.
", "ds_time_res": "年", "ds_acq_place": "Laohugou glacier No.12 in Qilian Mountains", "ds_space_res": "", "ds_projection": "", "ds_process_way": "The observation work is in the charge of a specially assigned person. In the process of digging the snow pit, direct sunlight should be avoided. The snow ice density measurement adopts the weighing method, and the average value is obtained according to the multiple measurement results.
\n", "ds_ref_instruction": " " } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "ds_topic_tags": [ "单点物质平衡，消融、积累值，消融积累的水当量，消融面积" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "祁连山，老虎沟，12号冰川" ], "ds_time_tags": [ 2012, 2013, 2014, 2015 ], "ds_contributors": [ { "true_name": "陈记祖", "email": "chenjizu900120@qq.com", "work_for": " 中国科学院西北生态环境资源研究院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "陈记祖", "email": "chenjizu900120@qq.com", "work_for": " 中国科学院西北生态环境资源研究院", "country": "中国" } ], "ds_managers": [ { "true_name": "陈记祖", "email": "chenjizu900120@qq.com", "work_for": " 中国科学院西北生态环境资源研究院", "country": "中国" } ], "category": "冰川" }