震中位置 的英文怎麼說
中文拼音 [zhènzhōngwèizhì]
震中位置
英文
epicentral location-
Scientists locate earthquakes by measuring the time it takes body waves to arrive at seismographs in a minimum of three locations
科學家通過測定體波到達地震儀所需要的時間,以3個距離中最小的一個來確定地震的位置。In the case that hypocenter depth is far less than the epicenter distance without depth phases available, only the relative epicenter distribution could be obtained accurately by double difference method, the depth determined would be not stable
當震源深度遠小於震中距時,如果沒有深度震相的參與,只能得到誤差較小的震中相對分佈,深度的相對位置仍有較大的誤差。Hi this thesis, the technique of detector array is used to obtain the location of anomalous infrasound, it is the basic of the study of prediction of earthquake. to derive useful information by using spectrum analysis on infrasonic signal. then combing with other methods a forecast could be made
本課題主要是利用數字技術,採用用傳感器陣列計算異常次聲波波源的方位,這是今後預測震中位置研究的前提;並對次聲信號進行頻譜分析,提取有用的關于臨震次聲方面的信息,再結合其他的預報方法,作出準確的地震預報。The epicenter can be determined by calculating the intercross point of two or more directions of detectors
通過兩個以上陣列的方位角交匯即可確定震中位置。According to their space position, the seismic features of shallow gas in this region can be divided into three groups : ( 1 ) features in the stratum : acoustic blanket, acoustic curtains, acoustic turbidity, irregular strong top reflection boundary, and phase pull - down in both flanks ; ( 2 ) features of the seabed : seabed pockmark and giant sunken pit ; ( 3 ) features in the seawater column : acoustic plumes, cloudy turbidity and point - line - type reflection
該區的淺層氣地震特徵按空間位置分為3大類: ( 1 )地層中的特徵:聲學空白、聲學幕、聲學擾動、不規則強反射頂界面、兩側相位下拉; ( 2 )海底面的特徵:海底麻坑、大型塌陷坑; ( 3 )海水層中的特徵:聲學羽流、雲狀擾動、點劃線反射。Bracing members in concentrically braced structures may be subjected to large cyclic deformations due to local buckling during a severe earthquake causing possible early fractures
摘要在罕遇地震下,框架中心支撐結構中的鋼支撐常因局部屈曲位置的低周疲勞開裂而過早退出工作。On receipt of this and similar information from other seismograph stations in different countries, ptwc would determine the location, depth and magnitude of the earthquake and assess the likelihood of a tsunami. it would send a message to participating countries and territories on details of any tsunami forecast including the expected arrival time and amplitude of the tsunami at different locations around the pacific
太平洋海嘯警報中心收到各國地震站的地震資料后,會計算地震震中位置、深度和地震強度並且評估發生海嘯的可能性,並向參與的國家及地區發送詳細海嘯預測資料,包括預期海嘯到達太平洋沿岸各地區的時間及海嘯高度等。6. 5 earthquake in the west of beijing in 1730 together with the data of drills, electromagnetism and gravity, the qinglongqiao - qiliqu and shahe active faults are identified for the first time. although at present all aspects of the earthquake are not fully known, the authors consider that the two active faults are responsible for the earthquake and the first one plays the leading role
在前人研究1730年北京西郊6 . 5級地震的基礎上,綜合井孔電磁和重力資料,經分析初步確定了青橋七里渠活動斷層和沙河斷陷南緣活動斷層的存在及其位置規模和基本特徵,認為這兩條活動斷層是此次地震的發震構造,其中青橋七里渠斷層在此次地震中起主導作用。The establishment of seismogenic faults and epicenter of the earthquake will benefit for the disaster mitigation and city construction of beijing
這些活動斷層和震中位置的確定,有利於首都地質災害防治和城市建設。After the mechanical model and the dynamic differential equations of the buildings are set up and solved using the theory of structure dynamics, the base isolated system, the tmd system, and this up - low control system are discussed. the analysis results show that the stiffness and damp of the superstructure are variables that play important parts in the effects of earthquake response ' s decreasing. secondly, finite element models are established to analysis the mechanical performance of bawangfen subway platform with upper two buildings in beijing
藉助于ansys - v5 . 7有限元分析軟體,本文還對設置和未設置減震層的北京八王墳地鐵車輛段大平臺結構?上部住宅系統進行了有限元建模,並對這兩個系統的模態和三維地震動作用下的非線性地震反應進行了大量的計算分析,對比了對應於4條地震波的8度小震、中震和大震情況下減震體系和非減震體系的層間剪力和層間位移等反應。The first - order perturbation method correct for forcing decoupling method based on perturbation theory is put forward to decrease error ; iii. the complex modal method is introduced into analysis of non - classical damping systems to eliminate error of forcing decoupling method, and improve the complex modal response spectrum, which can apply to design of non - classical damping systems ; iv. for exerting the energy dissipation capability of each device, a two - step optimum method, whose controlling function is extremum expectation of interbedded displacement, is put forward to optimize the number and position of device ; v. the problem of iterative method applied to analyze energy dissipation systems is indicate, and give some primary advice based on pilot study
為改善上述缺點,本文進行了以下的研究工作:在忽略耗能器附加質量的基礎上,推導出適用於耗能減震結構的攝動法,減少振型分解法在迭代計算過程中的工作量,加快計算速度;針對運動方程的強行解耦所產生的誤差,根據攝動法原理,對其進行一階攝動修正;為消除強行解耦振型分解法用於非比例阻尼結構分析時產生的誤差,引入狀態空間對系統進行復模態分析,並改進了基於復模態理論的、適用於非比例阻尼結構設計的雙反應譜方法;對于耗能器的數量和位置優化進行了一些探討和研究。In the new plan, the position of the studied strata in the stratigraphic column of late precambrian of china shows an impotant relation between sinian system and qingbaikou system on the geologic and biologic evolution
新方案中這些地層在我國晚前寒武紀地層柱中的位置,反應出了震旦系與青白口系的地史演化及生物演化間的重要關系。The analysis results and suggestions have been adopted in the structural design. from above analysis, the thesis gets conclusions as following : ( 1 ) total shearing forces under earthquake action in stories under transfer story increase as position of transition story elevated, which is the negative impact resulted from higher position of transfer story and the regulations of position of transfer story in code is reasonable
本文的分析結果及建議已用於該工程的結構設計中,對于轉換層位置及形式對復雜高層建築結構地震反應的影響問題,主要得出以下一般性結論:地震作用下,轉換層下部樓層的層總地震剪力和彎矩隨轉換層位置的增高有所增大,這是轉換層位置較高帶來的不利影響,規范對轉換層位置進行限制是適當的。We can understand the quality and location of shear wall influences the whole structure, which includes its influence on seismic - force, displacement and the center of quality and stiffness. all these factors will reflect if the structure is safe
通過對剪力墻布置的研究,了解剪力墻數量和位置的不同對整個結構的影響,其中包括對地震力的影響,對結構側移值的影響,對結構質量中心和剛度中心的影響。Using the arrival times of 197 earthquakes well recorded by the beijing seismic network and the china - germany cooperative yanqing digital seismic array in the period from october of 2001 to december of 2005, we accurately relocate these earthquakes by the joint - inversion program for hypocentralr position and 3 - d velocity structure
摘要利用首都圈地震臺網和中德合作延慶數字地震臺陣2001年10月2005年12月獲得良好記錄的197次地震到時,運用地震震源位置和三維地殼速度結構聯合反演程序對這些地震實行精確定位。According to the seismic convolution model, a kind of matched filters in time - scale domain is designed for echo signal detection of ground penetrating radar ( gpr ) and implemented in this paper, which is applied to detect the location and amplitude of single reflection wavelet in receiving signal through continuous wavelet transform
摘要根據地震褶積模型,設計並實現了應用於探地雷達回波信號檢測的時間尺度域匹配濾波器,利用小波變換的時間定位性和尺度伸縮性,檢測出雷達接收信號中單個反射子波的位置與強弱信息,利用已知的雷達發射子波模型還原回波信號,達到了濾除噪聲、最佳接收的目的。Abstract : this paper analyzes the astronomical backgrounds, such as the positons of celestial objects, variation in the earth rotation and solar activities, etc., for the recent three moderate and strong earthquakes from chengjiang earthquake to qiubei earthquake in yunnan province
文摘:分析了澄江地震至丘北地震期間雲南發生的3次中強震時的天體位置、地球自轉與太陽活動等天文背景。Relatively reliable suction goods drop should pass the explore below a few diving in share price, be far from all valence 3 above, float of short that day line prepares this position to already did not wish again shipment, even if cast sheet greatly to also be done not have new low, banker also discovers the chip prediction of a person ' s luck in a given year that makes small conference cause certain level to go up again, so this position should be in the relatively reliable suction in washing dish of movement goods is nodded, even if won ' t turn over a body that day up, also be that day area of an opposite low, calm view of ok and easy ground its change, enjoy the short poor profit in washing pan zhen to swing
較為穩妥的吸貨點應在股價經過幾波跳水下探,遠離均價3以上,此位置當日短線浮籌已不願再出貨,即使是大的拋單也沒新低,莊家也發現再打低會造成一定程度上的籌碼流失,所以這個位置應該是在洗盤動作中較為穩妥的吸貨點,就算當日不會反身向上,也是當日一個相對低價區,可以從容地靜觀其變,享受在洗盤震蕩中的短差利潤。Thames water pipe ( 2. 2 m ) suffered three damages along the pipeline asymmetrically spaced around the fault in kocaelie earthquake, and the shigang water pipe ( 2. 0 m ) suffered two damages along the pipeline symmetrically spaced around the fault in ji - ji earthquake. the failure performance of these two damage cases for large diameter steel pipelines are much different form each other because of the different types of fault movements as well as the type of soil condition on both sides of fault ( kl k2 and kl = k2 )
利用本文所提出的殼有限元模型,對兩類埋地管道通過斷層的實際震害進行了模擬:第一類是在供水管網系統中占據重要位置的大口徑鋼管的震害,土耳其地震和集集地震分別都有這類管子的震害;第二類是以往震害資料很少的pe管在集集地震中的震害。Our eyes are constantly in motion. even during visual fixation, small eye movements continually jitter the location of gaze
我們的眼睛處于不斷運動中。即使在凝視時,在所凝視的位置眼球仍不斷進行細小的震動。分享友人