搜索结果: 1-15 共查到“理学 Km”相关记录33条 . 查询时间(0.171 秒)
位于地幔过渡带上方的低速层结构是近20年来地球物理学领域的一个重要发现。对于410-km间断面上覆低速层结构的探测（低速层的空间分布、厚度变化、低速异常值大小等）及其形成机理的研究是深部地幔结构、物性和动力学研究的热点问题，对理解地幔对流模式、地球内部物质运移、熔体分布以及俯冲板块在地球深部的归宿等问题都有着非常重要的意义。西北太平洋俯冲带地区是全球最为典型的俯冲区域，这里板片的深部俯冲形态多样，...
中科院青藏高原研究所和青藏高原地球科学卓越创新中心“碰撞隆升及影响团队”丁林研究员课题组通过对藏南桑桑地区基性片岩原岩形成时代和形成环境的研究，将大印度的南北向范围限定在~2400 km，并认为印度-欧亚大陆初始碰撞发生在北纬低纬度地区。该成果近期以“The latest Jurassic protoliths of the Sangsang mafic schists in southern T...
基于RCP4.5情景下6.25 km高分辨率统计降尺度数据,使用国际上通用的极端气候事件指数,分析雄安新区及整个京津冀地区未来极端气候事件的可能变化。首先对当代模拟结果进行评估,结果表明,集合平均模拟可以较好地再现大部分极端气候事件指数的分布,且对与气温有关的极端气候事件指数模拟效果较好。但也存在一定偏差,特别是对连续干旱日数(CDD)的模拟效果相对较差。
Measurement-Device-Independent Quantum Key Distribution over 200 km
Measurement-Device-Independent Quantum Key Distribution
2016/1/22
Measurement-device-independent quantum key distribution (MDIQKD) protocol is immune to all attacks on detection and guarantees the information-theoretical security even with imperfect single-photon de...
N-Body simulations of growth from 1 km planetesimals at 0.4 AU
Origin, Solar system Planetesimals Planetary formation Earth
2015/12/25
We present N-body simulations of planetary accretion beginning with 1 km radius planetesimals in orbit about a 1 M star at 0.4 AU. The initial disk of planetesimals contains too many bodies for any c...
Twelve-month, 12 km resolution North American WRF-Chem v3.4 air quality simulation: performance evaluation
Horizontal resolution the simulation of the air pollution in the chemical chemical transfer mode the mechanism of atmospheric chemistry modal aerosol dynamics model
2015/5/18
We present results from and evaluate the performance of a 12-month, 12 km horizontal resolution year 2005 air pollution simulation for the contiguous United States using the WRF-Chem (Weather Research...
EVIDENCE FOR 1000 km s–1 MOLECULAR OUTFLOWS IN THE LOCAL ULIRG POPULATION
star formation history,
2014/12/20
The feedback from galactic outflows is thought to play an important role in shaping the gas content, star formation history, and ultimately the stellar mass function of galaxies. Here we present evide...
ECOCLIMAP-II/Europe: a twofold database of ecosystems and surface parameters at 1 km resolution based on satellite information for use in land surface, meteorological and climate models
ECOCLIMAP-II/Europe ecosystems and surface parameters 1 km resolution satellite information land surface meteorological climate models
2014/12/16
The overall objective of the present study is to introduce the new ECOCLIMAP-II database for Europe, which is an upgrade for this region of the former initiative, ECOCLIMAP-I, already implemented at g...
A global coupled Eulerian-Lagrangian model and 1 × 1 km CO2 surface flux dataset for high-resolution atmospheric CO2 transport simulations
global coupled Eulerian-Lagrangian model surface fl ux
2014/12/11
受俯冲残留体影响的410 km间断面起伏形态的研究对于确定地球内部物质构成及地球动力学过程具有重要作用.帕米尔—兴都库什俯冲区域拥有全球少有的中、深源地震,为研究410 km间断面起伏提供了良好的资源.利用日本Hi-net地震台网和美国TA台阵记录的帕米尔—兴都库什俯冲区域的6个震源深度为154.0~220.9 km、震级为Mb5.6~6.4的中、深源地震的短周期/宽频带波形资料,经过4次根倾斜叠...
Distribution of Pu isotopes in marine sediments in the Pacific 30 km off Fukushima after the Fukushima Daiichi nuclear power plant accident
Fukushima plutonium isotopes western North Pacific marine sediments SF-ICP-MS
2017/4/11
The Fukushima Dai-ichi Nuclear Power Plant (DNPP) accident has caused serious contamination of the marine environment
from atmospheric fallout deposition and the direct discharges of highly radioacti...
汤加—斐济地区300 km间断面的SdP转换波证据
汤加&mdash 斐济地区 300 km间断面 N次根倾斜叠加
2013/11/6
上地幔速度间断面的存在形态及其性质的研究对于理解地球构造运动以及地球内部物质运移过程具有重要意义.针对上地幔中可能存在的300 km速度间断面, 本文收集日本Hi-net地震台网所记录的2004年以来、震源深度在145~219 km之间、且震级为mb5.0~6.0之间的6个汤加—斐济地区地震的波形资料. 利用4次根倾斜叠加方法对收集到的波形资料进行叠加处理,获得了相应的叠加灰度图, 从中提取的离源...
Searching for Saturn's Dust Swarm: Limits on the size distribution of Irregular Satellites from km to micron sizes
Solar System: satellites
2011/10/8
We describe a search for dust created in collisions between the Saturnian irregular satellites using archival \emph{Spitzer} MIPS observations. Although we detected a degree scale Saturn-centric exces...
A very high-resolution (1 km×1 km) global fossil fuel CO2 emission inventory derived using a point source database and satellite observations of nighttime lights
a point source database satellite observations nighttime lights
2011/1/20
Emissions of CO2 from fossil fuel combustion are a critical quantity that must be accurately given in established flux inversion frameworks. Work with emerging satellite-based inversions requires spat...