75 research outputs found
Author Correction: Regulating coordination number in atomically dispersed Pt species on defect-rich graphene for n-2 butane dehydrogenation reaction
No full textCorrection to: Nature Communications https://doi.org/10.1038/s41467-021-22948-w, published online 11 May 2021. The original version of this article inadvertently acknowledge Xiangbin Cai as a co-corresponding author instead of co-first author. This has been corrected in both the PDF and HTML versions of the Article
Two-way traveltimes of internal layers and ice thickness between Dome C - Vostok - Dome A from fly POLAR_5_083118_interne_2009
No full textTwo-way traveltimes of internal layers and ice thickness between Dome C - Vostok - Dome A from fly POLAR_5_083118_interne_200
Two-way traveltimes of internal layers and ice thickness between Dome C - Vostok - Dome A from fly POLAR_5_083119_interne_2009
No full textTwo-way traveltimes of internal layers and ice thickness between Dome C - Vostok - Dome A from fly POLAR_5_083119_interne_200
Predicting tumor location from prone to supine breast MRI using a simulation of breast deformation
No full textAnalysis of Temporal and Spatial Variability of Fronts on the Amery Ice Shelf Automatically Detected Using Sentinel-1 SAR Data
No full textThe Amery Ice Shelf (AIS) dynamics and mass balance caused by iceberg calving and basal melting are significant in the ocean climate system. Using satellite imagery from Sentinel-1 SAR, we monitored the temporal and spatial variability of the frontal positions on the Amery Ice Shelf, Antarctica, from 2015 to 2021. In this paper, we propose an automatic algorithm based on the SO-CFAR strategy and a profile cumulative method for frontal line extraction. To improve the accuracy of the extracted frontal lines, we developed a framework combining the Constant False Alarm Rate (CFAR) and morphological image-processing strategies. A visual comparison between the proposed algorithm and state-of-the-art algorithm shows that our algorithm is effective in these cases including rifts, icebergs, and crevasses as well as ice-shelf surface structures. We present a detailed analysis of the temporal and spatial variability of fronts on AIS that we find, an advance of the AIS frontal line before the D28 calving event, and a continuous advance after the event. The study reveals that the AIS extent has been advanced at the rate of 1015 m/year. Studies have shown that the frontal location of AIS has continuously expanded. From March 2015 to May 2021, the frontal location of AIS expanded by 6.5 km; while the length of the AIS frontal line is relatively different after the D28 event, the length of the frontal line increased by about 7.5% during 2015 and 2021 (255.03 km increased to 273.5 km). We found a substantial increase in summer advance rates and a decrease in winter advance rates with the seasonal characteristics. We found this variability of the AIS frontal line to be in good agreement with the ice flow velocity
The roughness calculation of the basal boundary for the ice-sounding data collected at Princess Elizabeth Land (PEL)
No full textIn this paper, we calculated the roughness of the basal boundary collected at Princess Elizabeth Land (PEL) to evaluate the topographic structure via the ice-sounding data collected during 32nd and 33rd Chinese Antarctic Research Expeditions (CHINARE 32 and 33). The calculation is achieved by a two-parameter roughness index method, which could differentiate different classes of subglacial landscape, in particular between erosional and depositional settings. Finally, the calculation results of partial regions of PEL are illustrated to describe the roughness of the detected regions
Self-Symmetrical 3D Hierarchical Calcium Sulfate Hemihydrate Twin-Flowers Composed of Microplates as a Renewable Material for Water Separation from Water-in-Oil Emulsion
No full textIce-penetrating radar data used in paper "Evaluating and locating a suitable bedrock drilling site near Zhongshan Station with airborne and ground-based observations"
No full text<p>These are the ice-penetrating radar data used in Figure 4 of the paper "Evaluating and locating a suitable bedrock drilling site near Zhongshan Station with airborne and ground-based observations".</p>
<p>The"read_image.m" file can be used to re-display Figure 4(a) of the paper, where the "x.mat", "y.mat", and "radar_profile_data.mat" are the x and y coordinates of the survey line, and the return power of the ice-penetrating radar data, respectively.</p>
<p>The "Data_of_profile_A-A'(Figure_4b).xlsx" file includes two sheets. One is the "subglacial topography" sheet, which includes information about longitude, latitude, ice thickness, bed elevation, and hydraulic potential along the profile A-A'. The other sheet is the "BRP" sheet, which includes information about bed reflection power along the profile A-A'.</p>
Detecting and Searching for subglacial lakes through airborne radio-echo sounding in Princess Elizabeth Land (PEL), Antarctica
No full textOver 400 subglacial lakes were discovered in Antarctica through radio-echo sounding (RES) method and remote sensing. Subglacial lakes have significance in lubricating ice-bedrock interface and enhancing ice flow. Moreover, ancient lives may exist in the extreme environment. Since 2015, the “Snow Eagle 601” BT-67 airborne platform has been deployed and applied to map ice sheet and bedrock of Princess Elizabeth Land. One of great motivations of airborne surveys is to detect and search for subglacial lakes in the region. In this paper, we provided preliminary results of RES over both old and new discovered lakes, including Lake Vostok, a potential second large subglacial lake and other lakes beneath interior of the ice sheet in Antarctica
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