副热带东北太平洋混合层深度及其对潜沉的影响   总被引：1，自引：0，他引：1  

夏瑞彬  刘成彦  程晨 《海洋学报(英文版)》2018,37(3):51-62

The present climate simulations of the mixed layer depth(MLD) and the subduction rate in the subtropical Northeast Pacific are investigated based on nine of the CMIP5 models. Compared with the observation data,spatial patterns of the MLD and the subduction rate are well simulated in these models. The spatial pattern of the MLD is nonuniform, with a local maximum MLD(140 m) region centered at(28°N, 135°W) in late winter. The nonuniform MLD pattern causes a strong MLD front on the south of the MLD maximum region, controls the lateral induction rate pattern, and then decides the nonuniform distribution of the subduction rate. Due to the inter-regional difference of the MLD, we divide this area into two regions. The relatively uniform Ekman pumping has little effect on the nonuniform subduction spatial pattern, though it is nearly equal to the lateral induction in values. In the south region, the northward warm Ekman advection(–1.75×10~(–7) K/s) controls the ocean horizontal temperature advection(–0.85×10~(–7) K/s), and prevents the deepening of the MLD. In the ensemble mean, the contribution of the ocean advection to the MLD is about –29.0 m/month, offsetting the sea surface net heat flux contribution(33.9 m/month). While in the north region, the southward cold advection deepens the MLD(21.4 m/month) as similar as the heat flux(30.4 m/month). In conclusion, the nonuniform MLD pattern is dominated by the nonuniform ocean horizontal temperature advection. This new finding indicates that the upper ocean current play an important role in the variability of the winter MLD and the subduction rate.  相似文献   

聊城市人工影响天气业务体系建设探讨     

张新华  冯彩波  宁瑞斌 《山东气象》2010,30(2):28-30

针对聊城市自开展人工影响天气工作13年来发展过程中存在的问题和今后聊城市人工影响天气业务体系建设进行探讨。提出聊城市人工影响天气基地建设的基本思路和现代化作业水平提高的主要途径。以业务技术系统、效果检验系统和作业点监测系统为依托,强化人才培养,加强规范化作业,取得较高的社会和经济效益。  相似文献   

Radio Location Method for Detecting Small and Medium Faults in Coal Mines Underground Measurement Research     

HUANG Fuquan  XIE Ruibin  HUANG Yang  MA Yong  JU Mong  ZHU Wei  XU Zheng  GAO Putao  NIU Feng  LI Yongtao 《《地质学报》英文版》2019,93(Z2):394-394

  相似文献   

绿洲、沙漠及戈壁边界层特征对比分析   总被引：4，自引：0，他引：4  

朱平  蒋瑞宾 《气象》1996,22(3):48-50

利用黑河实验所取得的资料，对比分析了绿洲、沙漠及戈壁边界层中风、温、湿分布规律，从而为研究西北地区不同下垫面所造成的气候特点对生态环境的影响、土地的开发腹及人工改造自然环境等工作提供依据。  相似文献   

达尔布特断裂中段构造活动性   总被引：1，自引：0，他引：1  

赵瑞斌  李进云 《内陆地震》1997,11(4):295-301

研究了达尔布转断裂中段第四纪沉积物的分布特征，阶地变形，冲洪积扇变形，断层陡坎展布及探槽揭露等方面的内容，认为达尔布特断裂中段的活动以左旋走滑为主，晚更新世晚期以来垂直活动速率在０．０１１ｍｍ／ａ，水平活动速率为０．２０～０．２２ｍｍ／ａ；且至少有２次明显活动，全新世最后１次活动可能为古地震事件，时间距今约４０００～４５００年左右，研究结果表明，达尔布特断裂中段具有发生强烈的构造条件。  相似文献   

共和地震的诱发机制与水库诱发地震的研究     

陈玉华  张瑞斌 《高原地震》1995,(1)

本文通过对龙羊峡水库蓄水使共和盆地应力、重力等条件改变的讨论，认为：共和地震的形成和发生与龙羊峡水库蓄水有密切的关联，在将共和地震与水库诱发地震的特征进行了比较后，发现共和地震所表现出来的特征与水库诱发地震特征极其相似，进而提出共和地震应属水库诱发地震的范畴。  相似文献   

1986年8月26日门源6.4级地震震害及烈度分布          下载免费PDF全文

党光明  涂德龙  叶建青  张瑞斌  贾运鸿 《地震工程学报》1988,10(3):95-97

1.前言1986年8月26日,青海省门源县境内发生了6.4级地震。地震发生后,青海省地震局与兰州地震研究所联合对震区进行了宏观考察。但由于自然条件所限,未能进入极震区。在这以后,青海省地震局、兰州地震研究所、青海省地质局联合组队,再次深入震区进行考察,确定了宏观震中及地震裂缝带,圈划了极震区等震线。本文主要以第二次考察所取得的资料为基础,论述和分析了这次地震极震区的地质震害类型和分布特征以及烈度分布特征。  相似文献   

基于SBAS-InSAR技术的小金川两岸滑坡隐患识别     

胡东雨  王运生  吴昊宸  赵方彬  寇瑞斌  冯卓 《大地测量与地球动力学》2022,42(11):1171-1176

为全面准确地识别小金川半扇门-达维河段干流两岸滑坡隐患,基于SBAS-InSAR技术,通过Sentinel-1升、降轨数据分析结果结合互补的方式对该区域的滑坡隐患进行早期识别。结果显示：1）升、降轨数据结合有效减小了阴影叠掩区干扰,能够较全面地识别出两岸岸坡长期蠕变的隐患点;2）Sentinel-1降轨处理得到LOS向形变速率为-120~10 mm/a,升轨处理得到的形变速率为-131~10 mm/a;3）基于形变结果识别出35处滑坡隐患点,其中8处为典型滑坡隐患点。重点分析两处滑坡隐患点的形变特征并进行现场复核显示,坡体上道路错断明显,在形变区域发育有裂隙并导致地台发生错动,验证了坡体处于长期蠕变状态。  相似文献   

Intercomparison of NO<Subscript><Emphasis Type="Italic">x</Emphasis></Subscript>, SO<Subscript>2</Subscript>, O<Subscript>3</Subscript>, and aromatic hydrocarbons measured by a commercial DOAS system and traditional point monitoring techniques   总被引：1，自引：1，他引：0  

XIE Pinhu  LIU Wenqing  FU Qiang  WANG Ruibin  LIU Jianguo  WEI Qingnong 《大气科学进展》2004,21(2):211-219

A field-based intercomparison study of a(DOAS) instrument (OPSIS AB, Sweden) andcommercial Differential Optical Absorption Spectroscopydifferent point-sample monitoring techniques (PM, basedon an air monitoring station, an air monitoring vehicle, and various chemical methods) was conducted inBeijing from October 1999 to January 2000. The mixing ratios of six trace gases including NO, NO2, SO2,03, benzene, and toluene were monitored continuously during the four months. A good agreement betweenthe DOAS and PM data was found for NO2 and SO2. However, the concentrations of benzene, toluene,and NO obtained by DOAS were significantly lower than those measured by the point monitors. Theozone levels monitored by the DOAS were generally higher than those measured by point monitors. Theseresults may be attributed to a strong vertical gradient of the NO-O3-NO2 system and of the aromatics atthe measurement site. Since the exact data evaluation algorithm is not revealed by the manufacturer ofthe DOAS system, the error in the DOAS analysis can also not be excluded.  相似文献   

On the Response of Subduction in the South Pacific to an Intensification of Westerlies and Heat Flux in an Eddy Permitting Ocean Model     

Chengyan LIU  Zhaomin WANG  Bingrui LI  Chen CHENG  Ruibin XIA 《大气科学进展》2017,34(4):521-531

Based on an eddy permitting ocean general circulation model, the response of water masses to two distinct climate scenarios in the South Pacific is assessed in this paper. Under annually repeating atmospheric forcing that is characterized by different westerlies and associated heat flux, the response of Subantarctic Mode Water(SAMW) and Antarctic Intermediate Water(AAIW) is quantitatively estimated. Both SAMW and AAIW are found to be warmer, saltier and denser under intensified westerlies and increased heat loss. The increase in the subduction volume of SAMW and AAIW is about 19.8 Sv(1 Sv =10~6m~3s~(-1)). The lateral induction term plays a dominant role in the changes in the subduction volume due to the deepening of the mixed layer depth(MLD). Furthermore, analysis of the buoyancy budget is used to quantitatively diagnose the reason for the changes in the MLD. The deepening of the MLD is found to be primarily caused by the strengthening of heat loss from the ocean to the atmosphere in the formation region of SAMW and AAIW.  相似文献