全文获取类型
| 收费全文 | 144篇 |
| 免费 | 7篇 |
| 国内免费 | 4篇 |
专业分类
| 测绘学 | 4篇 |
| 大气科学 | 7篇 |
| 地球物理 | 33篇 |
| 地质学 | 69篇 |
| 海洋学 | 4篇 |
| 天文学 | 14篇 |
| 综合类 | 1篇 |
| 自然地理 | 23篇 |
出版年
| 2023年 | 1篇 |
| 2022年 | 5篇 |
| 2021年 | 2篇 |
| 2020年 | 3篇 |
| 2019年 | 2篇 |
| 2018年 | 6篇 |
| 2017年 | 6篇 |
| 2016年 | 8篇 |
| 2015年 | 6篇 |
| 2014年 | 4篇 |
| 2013年 | 10篇 |
| 2012年 | 4篇 |
| 2011年 | 15篇 |
| 2010年 | 8篇 |
| 2009年 | 8篇 |
| 2008年 | 13篇 |
| 2007年 | 8篇 |
| 2006年 | 6篇 |
| 2005年 | 6篇 |
| 2004年 | 5篇 |
| 2003年 | 3篇 |
| 2002年 | 3篇 |
| 2001年 | 1篇 |
| 2000年 | 3篇 |
| 1999年 | 1篇 |
| 1998年 | 4篇 |
| 1997年 | 1篇 |
| 1996年 | 3篇 |
| 1995年 | 1篇 |
| 1994年 | 3篇 |
| 1991年 | 1篇 |
| 1987年 | 1篇 |
| 1984年 | 2篇 |
| 1981年 | 1篇 |
| 1976年 | 1篇 |
排序方式： 共有155条查询结果，搜索用时 792 毫秒
91.
Acta Geotechnica - The paper presents an experimental study on the effect of plastic fines content on the undrained behavior and liquefaction susceptibility of sand-fines mixtures under cyclic... 相似文献
92.
Mass media frequently makes use of more than the visual image. With the exception of music, movie scores, and radio news however, media geographers have largely ignored the impact sound in media has on shaping and characterizing our experience of the world. We address this lack by showcasing two types of audio media: audio drama and audio-guided tours. The former will be explored with the help of the world’s most successful audio drama series The Three Investigators to give a historical and theoretical introduction to the realm of sound within mass media. The latter will be illustrated using the example of the Austin Walking Tour as a representative production for city tourism. 相似文献
93.
C.?RiedelEmail author A.?Tryggvason T.?Dahm R.?Stefanson R.?B?dvarson G.?B.?Gudmundsson 《Journal of Seismology》2005,9(4):383-404
The tectonics of North Iceland is dominated by interaction of the Iceland hot spot and the mid-oceanic Kolbeinsey Ridge. Transform movement along the transition zone, often called Tjörnes Fracture Zone, and the seismicity it generates has been documented in the past. This study uses the seismicity data of the permanent South Iceland Lowland (SIL) network to quantify velocity structure from travel time inversion. The SIL seismic dataset is capable of illuminating parts of the region in a 3D seismic velocity inversion, primarily between 7 and 12 km depth, with less resolution elsewhere because of the sparse setup of the monitoring network. The problem has been analysed in 1, 2 and 3 dimensions and evaluated with 4 different inversion tools. The study reports a correlation of a seismic velocity anomaly in compressional wave velocity v p and shear wave velocity v s with the Husavik-Flatey fault and a further subsurface lineament stretching between the islands of Flatey and Grimsey. Finally, our results support a decrease of crustal thickness between the mainland and the island of Grimsey. 相似文献
94.
Torsten?HaberzettlEmail author Michael?Fey Andreas?Lücke Nora?Maidana Christoph?Mayr Christian?Ohlendorf Frank?Sch?bitz Gerhard?H.?Schleser Michael?Wille Bernd?Zolitschka 《Journal of Paleolimnology》2005,33(3):283-302
The volcanogenic lake Laguna Potrok Aike, Santa Cruz, Argentina, reveals an unprecedented continuous high resolution climatic record for the steppe regions of southern Patagonia. With the applied multi-proxy approach rapid climatic changes before the turn of the first millennium were detected followed by medieval droughts which are intersected by moist and/or cold periods of varying durations and intensities. The total inorganic carbon content was identified as a sensitive lake level indicator. This proxy suggests that during the late Middle Ages (ca. AD 1230–1410) the lake level was rather low representing a signal of the Medieval Climate Anomaly in southeastern Patagonia. At the beginning of the Little Ice Age the lake level rose considerably staying on a high level during the whole period. Subsequently, the lake level lowered again in the course of the 20th century. 相似文献
95.
Fluid-controlled quartz recovery in granulite as revealed by cathodoluminescence and trace element analysis (Bamble sector,Norway) 总被引：1，自引：0，他引：1
Alfons?M.?van den KerkhofEmail author Andreas?Kronz Klaus?Simon Torsten?Scherer 《Contributions to Mineralogy and Petrology》2004,146(5):637-652
Dispersed quartz veinlets in Proterozoic enderbitic charnockite from Tromøy, Bamble sector (southern Norway), with Ti-concentrations of mostly 80–180 ppm, produce bright blue cathodoluminescence (CL), against contrasting micro-textures of secondary pure quartz with low CL intensity. The textures comprise grain boundary alteration, healed micro-fractures, patches of secondary quartz, and euhedral quartz nuclei. The secondary quartz locally makes up 50% of the total quartz. Trace element analysis has been done by electron-probe micro-analysis (EPMA), laser-induced coupled plasma mass spectrometry (LA-ICPMS), and additional electron-paramagnetic resonance (EPR) spectroscopy. These studies testify systematic trace element reduction and extensive quartz recovery during retrograde metamorphism. We assume healing of a part of the aqueous fluid inclusions during a late thermal event, possible correlated with Paleozoic magmatic activity in the Oslo-Rift. During final cooling, aqueous fluids were largely retrapped in patches of secondary quartz associated with healed fractures, whereas carbonic inclusions (without secondary quartz) may have survived retrograde metamorphism. The variable but generally high salinity of fluid inclusions is assumed to be in part the result of quartz recovery by which ion concentrations were increased in the percentage range.Editorial Responsibility: J. Touret 相似文献
96.
97.
Precise orbit determination based on raw GPS measurements 总被引：1，自引：0，他引：1
98.
99.
100.
On the shape and velocity of fluid-filled fractures in the Earth 总被引：3，自引：0，他引：3
T. Dahm 《Geophysical Journal International》2000,142(1):181-192