应用商用CCD配备录像机进行天体定位的试验

本工作是为今后在1.2米望远镜上利用商用CCD配备录像机进行人卫快速精密定位观测所做的初步试验,其目的是在实验室里模拟检测商用CCD配备录像机后对星像的绝对及相对定位精度。通过使用不同图像板及录像带在不同幅度的CCD视频信号情况下的分组试验,得到了满足人卫观测的结果,CCD对绝对位置及相对位置的定位误差均小于±0.5个象元。本文还对误差产生的原因进行了初步分析。     

河南省恐龙蛋类型及古生态特征

河南省是我国乃至世界上最重要的恐龙蛋化石产地之一，具有含蛋层位多、数量大、类型全、原始状态保存好以及可供研究的Ｋ／Ｔ界线等特点。据初步统计，已有７科、１０属、１９种之多，且与霸王龙、鸭咀龙、蜥脚类及轮藻、孢粉、痕迹化石等共生。本文评述了恐龙蛋化石的分类系统、地层划分与时代、古生态特征及古气候等，并论述了恐龙绝灭的问题。     

Statistical mineral prediction without defining a training area

Statistical mineral prediction without defining a training area is one of the most important problems in mathematical geology. A mineralized favorability index (MFI) model is proposed. It is assumed that a certain geological environment related to the ore deposits or bodies considered can be described by a snythesis variable Y=_ix_i, where x_i (i=1 ... k) are k geological variables and _i are the weights, respectively. Y and _i are to be estimated. The study area is divided into equal-sized cells and assessed by comparing the Y values in the cells with each other.This paper is based on the main result of the author's master thesis, Wuhan College of Geology, Wuhan, China     

Spectral behaviour of the eclipsing binary TX UMa around primary minimum

Sixty-one blue spectrograms of TX UMa were obtained in the years 1969–1970, mainly in phases close to the primary minimum of the eclipsing system. The radial velocity curve displays clear rotational effect from which much higher than synchronous rotational velocity of the blue (B8V) component has been formally derived. However, this discrepancy is probably due to the presence of the tenous accretion disk around the primary. The disk is apparently fed by the intermittent mass transfer as indicated by the occasional changes of orbital period of the system. From all available radial velocity data an improved set of spectroscopic orbital elements is derived. The behaviour of the spectral lines in and out of the primary minimum is compared. Metallic lines of the cold (F7IV) secondary component are clearly seen exclusively in phases 0.988 to 0.012.Paper presented at the 11th European Regional Astronomical Meetings of the IAU on New Windows to the Universe, held 3–8 July, 1989, Tenerife, Canary Islands, Spain.     

有关内蒙古地质构造的一线之见——江苏响水至内蒙古满都拉地学断面北段研究报道之一

本文概述了江苏响水至内蒙古满都拉地学断面北段——包头至满都拉的地质观察结果。内容包括从太古宙乌拉山群到第四系、基底构造到新构造特征的七个方面。重点论述了渣尔泰群和白云鄂博群的构造性质,它们约在14亿年前才褶皱回返,代表了华北地台基底固结最迟的地段。造成这一事件的构造运动,拟称为色尔腾运动。此外,还讨论了华北地台北侧陆缘区加里东期和华力西期的构造     

基于空-谱先验条件随机场的高分辨率遥感影像变化检测方法

高空间分辨率遥感影像能够提供丰富的空间细节信息,使利用遥感影像进行精细变化检测成为可能.为充分挖掘高分辨率影像中的光谱、空间信息,本文提出一种基于影像空-谱先验信息的条件随机场（Conditional Random Field based on Spectral-Spatial Prior,SSPCRF）模型,该方法使用显著性检测方式自动提供先验光谱-空间样本信息,提高一元势能构建精度,有效缓解一元势能构建不准确导致的推理过程中的误差传递问题,并在二元势能中综合考虑标记场与观察影像的空间上下文信息以保持变化地物轮廓信息.最后,使用基于消息传递机制的推理方法将模型进行全局优化.在2组高分辨率影像数据集上的实验结果表明该方法能够提供较精确的初始变化检测信息,使得在减少变化检测结果中虚警点的同时保持变化地物细节信息.     

The effects of climate change on heating energy consumption of office buildings in different climate zones in China

Theoretical and Applied Climatology - Climate plays an important role in heating energy consumption owing to the direct relationship between space heating and changes in meteorological conditions....     

Characterization of landscape pattern based on land economic niche change: A case study in Ganzhou,Gansu Province,China

Land use change has a profound impact on biodiversity and ecological processes, and is closely related to changes in landscape patterns. This paper introduces the theory and method of land economic niche into landscape ecology, which provides a new method for spatial characterization of urban and rural spatial landscape patterns. Based on this theory, this paper analyzes the landscape pattern of Ganzhou District by using Landsat images as data source in 1995, 2000, 2005,2010 and 2015. We calculated the land economic niche by applying the niche potential theory. Combined with the theory of landscape ecology, we explored the effects of the land economic niche change on the landscape pattern at a county scale.The results show that economic niche of construction land, watershed and farmland increased during 1995–2015, and grassland declined significantly. The economic niche of farmland, construction land, watershed and grassland show a negative correlation with the number of patches(NP), fragmentation index(FN) and the fractal dimension index(FD), and had a positive correlation with the aggregation index(AI). There was no significant correlation between the forest land economic niche and landscape metrics. The change of land economic niche has a driving effect on the landscape pattern of the county, which can represent the economic development direction of Ganzhou District. The land economic niche is closely related to the landscape type which can directly obtain an economic benefit.     

Geochemical constraints on CO2-rich mantle source for the Kocebu Seamount,Magellan Seamount chain in the western Pacific

The alkaline oceanic island basalts(OIBs) with under-saturated SiO_2 and high contents of CaO and alkaline are usually attributed to mantle sources different from typical tholeiitic OIBs.Based on the results of high pressure and temperature experiment study,the genesis of silica under-saturated alkaline basaltic melts could be explained by the role of CO_2, thus,the genetic relationship of alkaline basalts with CO_2 has become a topic of relevance because it is closely related to the deep carbon cycle.The Magellan Seamount chain in the West Pacific Seamount Province has wide distribution of alkali basalts.For the first time,we collected alkaline basalt samples from the Kocebu Seamount of the Magellan Seamount chain and found that magmatic apatites widely occur in the less evolved volcanic rock samples,and the high contents of phosphorus should be a feature of the alkaline OIB s of the Magellan Seamounts.Compared with typical OIBs,these alkaline volcanic rocks have higher CaO and P_2 O_5, lower SiO_2 content,negative anomaly of high field strength elements(HFSEs),more distinctly negative anomaly of potassium(K) and the ubiquity of titanaugite,indicating a CO_2-rich mantle source.Based on the relatively high K2 O and TiO_2 contents and La/Yb ratio and low MgO content of these alkaline rocks,we suggest that the volcanic rocks of the Magellan Seamounts are originated from carbonated eclogites derived possibly from ancient subducted altered oceanic crust.     

Dynamic Diurnal Changes in Green Algae Biomass in the Southern Yellow Sea Based on GOCI Images

Macroalgae blooms of Ulva prolifera have occurred every summer in the southern Yellow Sea since 2007, inducing severe ecological problems and huge economic losses. Genesis and secular movement of green algae blooms have been well monitored by using remote sensing and other methods. In this study, green algae were detected and traced by using Geostationary Ocean Color Imager(GOCI), and a novel biomass estimation model was developed from the relationship between biomass measurements and previously published satellite-derived biomass indexes. The results show that the green algae biomass can be determined most accurately with the biomass index of green algae for GOCI(BIGAG), which is calculated from the Rsurf data that had been atmospherically corrected by ENVI/QUAC method. For the first time, dynamic changes in green algae biomass were studied over an hourly scale. Short-term biomass changes were highly influenced by Photosynthetically Available Radiation(PAR) and tidal phases, but less by sea surface temperature variations on a daily timescale. A new parameter of biomass changes(PBC), calculated by the ratio of the biomass growth rate to movement velocity, could provide an effective way to assess and forecast green tide in the southern Yellow Sea and similar areas.