南京石头城遗址1998～1999年勘探试掘简报

石头城是南京作为中国重要都城城市的起点,对研究六朝都城史、南京城市建设史等具有重大意义。1998年7月至1999年2月,南京市文物研究所在清凉山地区开展了野外调查、勘探和试掘工作。一系列考古工作证实现存于清凉山地区的土垣为六朝时期的石头城城垣遗存,其最初建造时间为东吴时期,东晋以后又有加筑,城垣的彻底弃用时间约在五代、北宋时期。     

QUICK SURVEY OF THE POSSIBLE CAUSES OF DAMAGE ENHANCEMENT OBSERVED IN SAN GIULIANO AFTER THE 2002 MOLISE,ITALY SEISMIC SEQUENCE

On October 31 and November 1, 2002, two earthquakes of magnitude 5.4 and 5.3 hit the area at the border between the Molise and Puglia regions in Southern Italy. The damage pattern in the epicentral area qualified the quake as an intensity VII MCS event, although providing a notable exception relevant to the small village of San Giuliano di Puglia. Since the first macroseismic survey, it appeared clear that in S. Giuliano the intensity was two degrees higher with respect to three neighbouring villages located within a radius of 3 km. Soon after the quake, our team started a campaign of microtremor HVSR measurements (Horizontal to Vertical Spectral Ratio), then we installed accelerometers and carried out damage and geological surveys. Finally, we performed a geoelectrical tomography and two profiles of Vs velocity with depth using the NASW technique (Noise Analysis of Surface Waves). The preliminary observations indicate that ground motion amplification is present in S. Giuliano within the frequency band that may affect building. A strong velocity contrast 20 m deep causes the predominant peak. More amplification could be due to more complicated, 2D effects. As regards the damage pattern, it divides S. Giuliano in three zones showing different characteristics and seismic behaviour. A building-by-building survey is still under way to better evaluate vulnerability variations in different zones of the village. However, the acquired data so far is sufficient to propose site amplification as a possible cause of the damage enhancement observed in S. Giuliano.     

HINTS ABOUT SITE AMPLIFICATION EFFECTS COMPARING MACROSEISMIC HAZARD ESTIMATE WITH MICROTREMOR MEASUREMENTS: THE AGRI VALLEY (ITALY) EXAMPLE

We approach from a new standpoint the problem of estimating seismic hazard for some towns and villages located in Val d'Agri area (Southern Italy) that in the past have been affected by several seismic events. The estimates are carried out using a method that is based on the analysis of site seismic history extracted from macroseismic catalogues. To study the influence of site effects two different procedures have been performed: in the first, seismic hazard estimates have been deduced from epicentral data only, in the second, intensity data actually observed at the site are also considered. The difference between the two estimates can be correlated with local variations of seismic response due to local geological features which are responsible for possible cases of amplification. In order to validate the presence of such correlation, seismic hazard estimates have been compared to site amplification measurements obtained by using the HVSR (Horizontal to Vertical Spectral Ratio) technique. Our findings reveal a good correlation between seismic hazard enhancements and the presence of site amplification effects. The application of this kind of analysis to the Val d'Agri area has pointed out that the joint estimates of site seismic hazard enhancement and HVSR measurements could be a helpful tool to identify problems related to seismic microzonation.     

A NON-PARAMETRIC APPROACH TO ATTENUATION RELATIONS

Abstract

A non-parametric multidimensional regression method is proposed for the prediction of seismic ground motion parameters. The main features which distinguish the method from standard regression procedures are: (1) The relationship between the input and output variables is not selected a priori by a prediction law, (2) an arbitrary number of input variables Can be taken into account, provided that an appropriate data base exists, and (3) the computational procedure is very simple. The results can be easily updated when new information becomes available. The method has been applied for the derivation of attenuation relations by using a combination of databases compiled by other researchers. In the majority of the cases discussed in this paper, the method was used for the prediction of horizontal peak ground acceleration as a function of magnitude and distance. In some cases, ground conditions were also taken into account. Some results on the attenuation relations of peak ground velocity and displacement, as well as Arias intensity, are also presented.     

甘肃卓尼县寺下川遗址发掘简报

<正>卓尼县为甘南藏族自治州辖县,地处青藏高原东部,位于洮河上游。寺下川遗址位于卓尼县藏巴洼乡寺下川村西北约200米的洮河台地之上,周     

商洛东龙山遗址Ⅰ区发掘简报

东龙山遗址位于陕西省东南部的丹江上游,考古发掘表明该遗址包含有仰韶、龙山、夏、商和西周五个时期的遗存,遗址I区主要为夏代晚期与商代早期遗存。夏代晚期遗存的文化面貌与二里头文化同期遗存基本相同,或可将该遗存视作二里头文化的一个地方类型,故我们提议将其称作"商洛类型"。商代遗存的文化面貌则与郑州二里岗等商代遗存基本相同,应属同一文化。     

陕西府谷县明代孤山堡古城考古收获

Based on historical texts, the gushanbao ancient walled-town was constructed during the Ming Dynasty Zhengtong years and served as a military defensive facility. The layout of this walled-town is in a slender eggplant shape. The length from south to north （the longest axis） is 650m and the width from east to west is between 180 -235 m. Four gateways were situated on both sides of wall and two barbicans connected to the north and south gateways, but only the north one is preserved now. A total of four rearm＇an （protruding wall adhesion） was respectively situated on the east, west and north wall. The body of wall was constructed with rammed-earth and protected by bricks from outside. A brick-kiln was discovered in the north of the walled-town. An arch-shape drainage gate was founded below the south wall.     

清、民国时期靖边县城选址研究

本文分析了清、民国时期靖边县城的选址以及城址迁移中非理性因素以及人为因素的重要性,阐述了以往城市选址研究中"以果论因"的研究方法所存在的问题,提出今后中国古代城市选址的研究中应该深入分析其中人以及非理性的因素,展现一个多彩的历史。     

新郑铁岭墓地M429发掘简报

铁岭墓地是郑韩故城西北方向一处面积巨大的邦墓地,墓葬排列密集而有规律,2009年发掘了十余座铜器墓,对于认识铁岭墓地的性质有重要的意义。     

Upper Paleolithic Rock Crystal Artifacts from the Southeastern Shore of Lake Bolshiye Allaki,the Southern Urals

Artifacts from the second cultural horizon of Bolshiye Allaki-2 are described, and data on the topography and stratigraphy of the site are examined. Results of technological, typological, petrographic, and faunal analyses along with radiocarbon dates suggest that this may be the earliest Upper Paleolithic ritual site in the Urals.