Google Earth Engine ——世界200000冰川面积、几何形状、表面速度和雪线高程current数据集

举报
此星光明 发表于 2022/04/16 00:49:51 2022/04/16
【摘要】  Global Land Ice Measurements from Space (GLIMS) is an international initiative with the goal of repeatedly surveying the world's estimated 200,000 glaciers. The p...

 Global Land Ice Measurements from Space (GLIMS) is an international initiative with the goal of repeatedly surveying the world's estimated 200,000 glaciers.

The project seeks to create a globally comprehensive inventory of land ice, including measurements of glacier area, geometry, surface velocity, and snow line elevation. To perform these analyses, the GLIMS project uses satellite data, primarily from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and the Landsat Enhanced Thematic Mapper Plus (ETM+), as well as historical information derived from maps and aerial photographs.

Each feature in this dataset is a polygonal boundary of a glacier at the time of analysis. A few glacier IDs have hundreds of distinct rows over time.

This dataset is a snapshot of the inventory of glacier boundaries as of October 27, 2017, providing over 690,000 rows.

该数据集是截至 20171027 日冰川边界清单的快照,提供超过 690,000 景。

Dataset Availability

1992-06-01T00:00:00 - 2017-08-01T00:00:00

Dataset Provider

National Snow and Ice Data Center (NSDIC)

Collection Snippet

ee.FeatureCollection("GLIMS/current")

Name Type Description
analysts String Name(s) of data contributor(s)
anlys_id Double ID of a glacier at a particular time
anlys_time String When the analysis was done
area Double Area of the glacier in the plane of the map projection in square kilometers
chief_affl String Affiliation of the chief of the regional center
db_area Double Same as 'area', but recomputed by the GLIMS project
geog_area String Name of geographic region covered by the regional center
glac_id String The GLIMS glacier ID
glac_name String The glacier name. ~80% of the rows equal 'None'
glac_stat String Glacier status, either 'exists' or 'None'
length Double Length of the glacier perimeter in meters
line_type String Glacier record type, e.g. 'glac_bound' for glaciers, or other values for internal rocks, snowlines, water features, etc.
local_id String ID assigned by the contributing institution or regional center
max_elev Double Highest part of the glacier, in meters above sea level
mean_elev Double Mean elevation of the glacier, in meters above sea level
min_elev Double Lowest part of the glacier, in meters above sea level
parent_id String ID of the glacier that is the parent of this glacier
primeclass Double WGMS glacier classification number
proc_desc String Description of processing done on this record
rc_id Double ID used by the regional center
rec_status String Record status
release_dt String Date data was released, in YYYY-MM-ddTHH:mm:ss format
src_date String Date of source imagery used to create the outline
subm_id Double The submission ID assigned by GLIMS
submitters String Name(s) of data submitter(s)
wgms_id String World Glacier Monitoring Service ID
width Double Width of the glacier in meters

数据引用:

For the creation of any reports, publications, new data sets, derived products, or services resulting from the data set, users should cite: GLIMS and NSIDC (2005, updated 2013): Global Land Ice Measurements from Space glacier database. Compiled and made available by the international GLIMS community and the National Snow and Ice Data Center, Boulder CO, U.S.A., doi:10.7265/N5V98602doi:10.7265/N5V98602https://doi.org/10.7265/N5V98602

代码:

var dataset = ee.FeatureCollection('GLIMS/current');
var visParams = {
  palette: ['gray', 'cyan', 'blue'],
  min: 0.0,
  max: 10.0,
  opacity: 0.8,
};
var image = ee.Image().float().paint(dataset, 'area');
Map.setCenter(-35.618, 66.743, 7);
Map.addLayer(image, visParams, 'GLIMS/current');
Map.addLayer(dataset, null, 'for Inspector', false);

文章来源: blog.csdn.net,作者:此星光明2021年博客之星云计算Top3,版权归原作者所有,如需转载,请联系作者。

原文链接:blog.csdn.net/qq_31988139/article/details/120255535

【版权声明】本文为华为云社区用户转载文章,如果您发现本社区中有涉嫌抄袭的内容,欢迎发送邮件进行举报,并提供相关证据,一经查实,本社区将立刻删除涉嫌侵权内容,举报邮箱: cloudbbs@huaweicloud.com
  • 点赞
  • 收藏
  • 关注作者

评论(0

0/1000
抱歉,系统识别当前为高风险访问,暂不支持该操作

全部回复

上滑加载中

设置昵称

在此一键设置昵称,即可参与社区互动!

*长度不超过10个汉字或20个英文字符,设置后3个月内不可修改。

*长度不超过10个汉字或20个英文字符,设置后3个月内不可修改。