Crevasse dataset over typical glaciers in Greenland ice sheet(2018-2020)

We propose an algorithm for ice fissure identification and detection using u-net network, which can realize the automatic detection of ice fissures of Typical Glaciers in Greenland ice sheet. Based on the data of sentinel-1 IW from July and August every year, in order to suppress the speckle noise of SAR image, the probabilistic patch based weights (ppb) algorithm is selected for filtering, and then the representative samples are selected and input into the u-net network for model training, and the ice cracks are predicted according to the trained model. Taking two typical glaciers in Greenland (Jakobshavn and Kangerdlussuaq) as examples, the average accuracy of classification results can reach 94.5%, of which the local accuracy of fissure area can reach 78.6%, and the recall rate is 89.4%.

0 2022-08-17

Water resources simulation data of Southeast Asian countries and the Lancang Mekong River Basin (1980-2019)

The water resources simulation data of Southeast Asian countries and the Lancang Mekong River Basin (1980-2019) is the result of using the meteorological data output from the WRF model as the driving data and simulation through the ways model. The data includes evapotranspiration, surface runoff, underground runoff, total runoff, groundwater, infiltration and soil moisture data of Southeast Asia land area from 1980 to 2019. The temporal resolution is daily and the spatial resolution is 3km. The data is generally good, but due to the limitations of the model, there are certain errors in the simulation results of a few variables. It is not recommended to use the research with high requirements for data accuracy. The data can reflect the situation of water resources in Southeast Asia to a certain extent, and provide data support for relevant research.

0 2022-08-16

Genome re sequencing data of main domestic animals (chickens) (2020-2022)

In order to describe the distribution pattern of genetic diversity of main domesticated animals in the Qinghai Tibet Plateau and its surrounding areas (Pan third pole area), and clarify its related genetic background. In 2020, we extracted the total DNA from 266 global chicken blood, tissue and other DNA tissue samples, built a database and sequenced the whole genome. At the same time, we downloaded the published chicken genome data, and carried out population analysis of 863 chicken genomes, so as to provide basic data for exploring the historical events of domestication, migration and expansion of domestic chickens in the pan third pole region, and further explore the adaptation mechanism of domesticated animals to harsh environments such as drying. Articles related to this data set have been published. All data in this data set can be downloaded online from fastq, BAM, VCF and SNP files.

0 2022-06-27

Datasets of streamflow, evapotranspiration and precipitation in the Upper Heihe River Basin (1992-2015)

This data is the runoff and evapotranspiration generated by the precipitation in the growing season of the upper reaches of Heihe River from 1992 to 2015. Temporal resolution: year (growingseason), spatial resolution: 0.00833°. The data include precipitation (mm), evapotranspiration (mm), runoff (mm) and soil water content (m3 / m3). The data are obtained by using meteorological, soil and vegetation parameters based on Eagleson eco hydrological model. The simulated rainfall runoff is verified by using the observed runoff data in the growing season of 6 sub basins in the upper reaches of Heihe River (Heihe main stream, Babao River, yeniugou, Liyuan River, Wafangcheng and Hongshui River). The variation range of correlation coefficient (R) is 0.53-0.74, RMSE is 32.46-233.18 mm, and the relative error range is -0.66-0.0005; The difference between simulated evapotranspiration and gleam et is − 115.36 mm to 44.1 mm. The simulation results can provide some reference for hydrological simulation in the upper reaches of Heihe River.

0 2022-05-26

Rules for logging of field investigation images in Qinghai-Tibet Plateau (2020)

Log and image are unique and important primary data of field research, and also an important part of scientific data. In order to further standardize the collection, collation, warehousing and exchange of expedition logs and image data of the second Comprehensive scientific investigation and research project on the Qinghai-Tibet Plateau, and ensure the operability, organization and standardization of the warehousing of expedition logs and image data, this technical specification is formulated. This specification provides procedures and methods for the collection and collation of investigation logs and image data, including work preparation, field investigation, data collation and other requirements, in order to better serve the storage of investigation data. This specification applies to the collation and storage of log and image data of field investigations organized by the second Comprehensive scientific investigation and research project on the Qinghai-Tibet Plateau, and other relevant data formed by field investigations can also be carried out by reference to this technical specification.

0 2022-05-20

Standard for data convergence and quality control of geological environment and disaster risk investigation in Qinghai-Tibet Plateau (2020)

To fully implement the measures for the administration of the scientific data for the "government budget funding for formation of the scientific data shall, in accordance with the open as normal, not open for exception principle, by the competent department to organize the formulation of scientific data resources directory, the directory should be timely access to the national data sharing and data exchange platform, open to society and relevant departments to share, In the spirit of unimpeded military-civilian sharing channels for scientific data, and in accordance with the relevant requirements of relevant exchange standards and specifications, this code is now established for the second Comprehensive scientific investigation and research project on the Qinghai-Tibet Plateau. The main drafting unit of this code: Institute of Geographic Sciences and Natural Resources Research, CAS. Main draftsman of this specification: project group 9 of the second Comprehensive Scientific investigation and research Mission of qinghai-Tibet Plateau.

0 2022-05-20

Active landslides by InSAR recognition in Three-River-Parallel territory of Qinghai-Tibet Plateau (2007-2019)

Aiming at the 179000 km2 area of the pan three rivers parallel flow area of the Qinghai Tibet Plateau, InSAR deformation observation is carried out through three kinds of SAR data: sentinel-1 lifting orbit and palsar-1 lifting orbit. According to the obtained InSAR deformation image, it is comprehensively interpreted in combination with geomorphic and optical image features. A total of 949 active landslides below 4000m above sea level were identified. It should be noted that due to the difference of observation angle, sensitivity and observation phase of different SAR data, there are some differences in the interpretation of the same landslide with different data. The scope and boundary of the landslide need to be corrected with the help of ground and optical images. The concept of landslide InSAR recognition scale is different from the traditional spatial resolution and mainly depends on the deformation intensity. Therefore, some landslides with small scale but prominent deformation characteristics and strong integrity compared with the background can also be interpreted (with SAR intensity map, topographic shadow map and optical remote sensing image as ground object reference). The minimum interpretation area can reach several pixels. For example, a highway slope landslide with only 4 pixels is interpreted with reference to the highway along the Nujiang River.

0 2022-04-18

Phenotypic data of main domestic animals (2022)

In order to integrate the pan third pole domestic chicken data, build the "global domestic chicken genome database (chicken2k)", provide basic data for the international research on the origin, domestication and selection of domestic chickens, and provide scientific guidance for the breeding and improvement of new domestic chicken varieties. In 2022, this sub project cooperated with the Animal Branch of the Germplasm Bank of Wild Species, Chinese Academy of Sciences, to apply for the use of genetic samples of domestic animals in Southeast Asia collected and preserved in recent years, and select representative individuals to carry out genetic diversity assessment. This data set contains 224 blood and tissue samples of domestic chickens and Hongyuan chickens from Southeast Asian countries (Laos, Thailand, Myanmar and Vietnam) collected by the Animal Germplasm Resource Bank. This data set contains basic sample information such as sample species, variety, detailed sampling place, sample type, collection time, collector and storage method, which are stored in Excel form.

0 2022-04-15

Data set of amphibian and reptile photos, specimens and tissue samples in Nyingchi Prefecture, Tibet Autonomous Region (2021)

This sub project aims to conduct comprehensive investigation and Research on amphibian groups in weak and key areas of the Qinghai Tibet Plateau, namely the Himalayas and Hengduan Mountains, obtain background data of regional animal diversity, collect a batch of specimens, collect specimens of species and environmental photos, and analyze and study amphibian diversity and its spatial pattern. In 2021, 500 local amphibian tissue samples were collected in Motuo County, Nyingchi Prefecture, Tibet Autonomous Region. This data set includes 1 tissue sample table, 1 specimen sample table and 900 photos. The sample information table includes basic sample information such as species, variety, detailed collection, sample type, collection time, collector and storage method, which are stored in the form of Excel. Photos, stored in JPG format.

0 2022-04-12

Data set of bird specimens and tissue samples in Motuo County, Nyingchi Prefecture, Tibet Autonomous Region (2021)

In order to investigate the distribution of birds in Tibet, the sub project sub project 2019qzkk05010108 conducted an important investigation on the background resources of birds in Beibeng Township, Motuo County in 2021, especially conducted an in-depth and detailed bird investigation on the understory birds in xirang village, Didong village and green village near the illegal Indian controlled area, and analyzed the composition of the understory bird community at medium and low altitude. A total of 717 bird specimens were collected, including 73 bird species. The results showed that the main dominant species in the investigated altitude range (600 ~ 1500m, mainly in the middle and low altitude) were stachyris nigriceps, schoeniparus cinereus, cyanoderma chrysaeum and alcippe nipalensis). There are also occasional species such as Zoothera monticola. This data set includes specimen photos, habitat photos, working photos, specimen information table and tissue sample information table.

0 2022-04-12