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Nature：冥古宙时期含水的不均一地幔与宜居地球的形成（图）
冥古宙时期 不均一地幔 宜居地球 含水
2023/1/14
地球是已知唯一存在生命的星球，在地球形成最初的5亿年，地球环境可能经历了从炼狱到摇篮的剧烈转变。对于大气圈的演化而言，地球早期的大气由浓厚的CO2等温室气体组成，不利于生命的存在。而到了冥古宙末期，大气中CO2分压就已经极低。CO2是温室气体的主要成分，可以以深海碳酸盐矿物的形式进入地幔被封存在地球内部。但是冥古宙时期，究竟是何种过程导致了如此巨量的CO2被封存在地幔深部？早期地球又如何演化成为生...
2013年实施的嫦娥三号任务实现我国首次月球软着陆，并开展巡视探测。目前，嫦娥三号已落月2453天，现处于“退役”状态(长管阶段)，着陆器部分科学载荷仍在工作。
中国地质大学(武汉)袁悦锋博士后、朱培民教授和肖龙教授，联合长江大学、宁波财经大学等合作者，通过分析嫦娥三号低频雷达浅层数据，推测出月球雨海北部年轻的爱拉托逊纪熔岩流具有多期性，并对一些构造演化提供了新的约束。该研究成果近期发表在国际期...
山东大学科技期刊社四期刊获中国高校期刊奖励
山东大学科技期刊社 四期刊 中国高校 期刊奖励
2018/11/20
2018年11月5日，中国高校科技期刊研究会公布了2018年度全国高校“杰出·百佳·优秀科技期刊”评选结果。山东大学科技期刊社编辑出版的《山东大学学报（理学版）》被评为“中国高校百佳科技期刊”；《山东大学学报（医学版）》《山东大学学报（工学版）》《山东大学耳鼻喉眼学报》被评为“中国高校优秀科技期刊”。近年来，科技期刊社紧紧围绕学校“双一流”建设，以创建“名刊强社”为目标，认真谋划发展蓝图，实施“期...
RESEARCH ON THE CONSTRUCTION METHOD OF COMPREHENSIVE EVALUATION INDEX OF GEOGRAPHIC CONDITIONS
Geographic conditions Index Mathematical method Evaluation
2016/11/23
This article proposes a construction method for a comprehensive geographic conditions evaluation index based on geographic conditions survey data combined with thematic data on society, economy, ecolo...
COPERNICUS–PRACTICE OF DAILY LIFE IN A NATIONAL MAPPING AGENCY?
Copernicus programme Copernicus services land monitoring public authorities BKG projects
2016/7/5
Copernicus is an European system created for Earth observation and monitoring. It consists of a set of Earth observation satellites and in-situ sensors that provide geo-information that are used, thro...
Applying two dimensional Kalman Filtering for Digital Terrain Modelling
Applying two dimensional Kalman Filtering Digital Terrain Modelling
2016/5/23
Digital Elevation Models (DEMs) have been increasingly used to model the terrain surfaces to provide the 'physical bases' for environmental studies. However, DEM is subject to systematic errors, rando...
ALOS PALSAR OBSERVATION OF KILAUEA VOLCANO ACTIVITIES FROM 2006 TO 2009
DInSAR Ground Deformation Disaster Mitigation Kilauea Volcano Volcano Modelling
2016/3/17
Volcanic eruptions are one of the most serious of nature’s calamities, threatening both human lives and property in its immediate vicinity. The dangerous environment surrounding a volcano also causes ...
DERIVING LAND USE AND CANOPY COVER FACTOR FROM REMOTE SENSING AND FIELD DATA IN INACCESSIBLE MOUNTAINOUS TERRAIN FOR USE IN SOIL EROSION MODELLING
Illumination variations correction of topography induced constrains Canopy cover factor estimation NDVI
2016/1/3
Soil erosion is one of the severe land degradation problems in many parts of the world. It not only affects on decreasing agricultural productivity but also it causes disasters such as siltation of re...
an integrated model to estimate the accuracy of digital orthoimages from high resolution satellite imagery
Earth observation Very high resolution satellite Accuracy Orthorectification QuickBird Modelling
2015/9/1
In this work, a theoretical-empirical model has been developed for the modelling of the local geometric accuracy of digital orthoimages from panchromatic QuickBird Very High Resolution Satellite Image...
BIG DATA BREAKING BARRIERS – FIRST STEPS ON A LONG TRAIL
Big Data Digital Earth Breaking Barriers
2015/5/7
Most data sets and streams have a geospatial component. Some people even claim that about 80% of all data is related to location. In the era of Big Data this number might even be underestimated, as ...
A FILTERING METHOD OF AIRBORNE LASER SCANNER DATA FOR COMPLEX TERRAIN
Laser scanning LIDAR DEM/DTM
2015/3/24
A new filtering method of airborne laser scanner data has been developed that is suitable for complex terrain, that is flat but with
artificial depression such as openings of underground tunnels, ty...
PROCESSING OF 3D BUILDING MODELS FOR LOCATION AWARE APPLICATIONS
Navigation Orientation Augmented Reality
2015/3/24
Within the paper the integration of 3D building models in the context of location aware services is presented by two exemplary
applications. First the intuitive access to object related information w...
SPATIO-TEMPORAL KNOWLEDGE REPRESENTATION AND ANALYSIS FOR EARTHQUAKE DISASTER MANAGEMENT
Knowledge representation disaster management earthquakes spatiotemporal
2015/3/6
This paper examines the importance of integrating different spatial and temporal knowledge representations in order to structure disaster relevant information. Special focus is made here on the human-...
INFLUENCE OF TOPOCLIMATIC VARIABLES DERIVATED FROM DIGITAL TERRAIN MODELS OVER THE VEGETATION REGENERATION PROCESSES IN BURNED AREAS
DTM NDVI curvature maps direct solar radiation maps upslope catchment area regenertion vegetal cover
2015/2/4
In this work, the signification of some topo-climatic variables deduced from a DEM over vegetation regeneration
processes after wildfires monitored on a semi-arid region from Landsat TM images has be...