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1.
Abstract

A walled portion of the extensive Precolumbian civic-ceremonial precinct of East St. Louis, near present day St. Louis, Missouri, enclosed a cluster of as many as 100 small buildings or huts. The huts were associated with a walled ritual-residential zone or elite compound dating to the late Stirling phase (a.d. 1150–1200) and, importantly, were burned in a single conflagration. The burning of East St. Louis may have resulted from a ritual commemoration, an act of aggression, or an accidental fire; circumstantial evidence primarily supports the first scenario. With strongly diminished mound and architectural construction at the site in subsequent decades, and with the coeval disappearance of key ritual-residential buildings from the regional landscape after the burning, the ancient East St. Louis fire was part of a larger pattern of historical events that mark a downward turning point in the social and political history of Greater Cahokia.  相似文献   

2.
Abstract

Rarely do buildings remain unchanged over long periods. Damage due to the ravages of time, destruction by human violence or natural catastrophes force repairs. In pre-industrial centuries attempts were made to incorporate existing walls into repairs and additions. Since the finished building should give a uniform impression, however, traces of remodelling were rarely visible, usually hidden under a new ‘skin’. Researching and repairing such remodelled buildings often lead to the discovery of earlier remains. Should these new discoveries be kept visible in order to document and to demonstrate the historical process? Reconstruction of pre-existing buildings is less problematic if the later, existing structures are removed, but it is necessary to deal with the lack of simultaneity – one must add to the structures remaining, resulting in mostly hypothetical reconstructions. This problem is illustrated mainly by examples from Ratisbon and Prague. Excavations lead to similar questions – seldom are remains from a single period uncovered. There are usually traces of different successive stages. If the excavation area is open to the sky, the problem is how to conserve what has been uncovered and make it understandable. Excavations and the presentation of their results inside existing buildings pose different problems. Solutions include leaving openings in, or creating room below, the new floor in order to leave earlier remains accessible.  相似文献   

3.
The results from a magnetic survey and archaeomagnetic investigation of a medieval brick kiln at Kungahälla in Bohuslän (south‐west Sweden) are reported. Detailed magnetic total field and magnetic gradient measurements over known traces of the kiln showed marked local magnetic anomalies of up to 200 nT, revealing the rectangular shape of the kiln remains. Palaeomagnetic investigations of the remanent magnetization of 12 bricks from the kiln floor gave precise definitions of both the direction of the archaeomagnetic field [(Dm, Im) = (66.7°, 8.8°), k = 655, α95= 1.7°] and the palaeointensity [Bm= 69.0 ± 3.6 µT]. An archaeomagnetic date is obtained by comparing the direction of the archaeomagnetic field found in the kiln with a geocentral dipole‐transformation of the British master‐curve for secular variation. Of two possible archaeomagnetic dates (ad 1280 ± 50 or ad 1480 ± 50), the ad 1280 ± 50 age is in good accordance with the C‐14 ages and archaeological dates as well as with direct historical evidence, whereas a c. 100 years younger TL date appears to be too young.  相似文献   

4.
Abstract

The search for ‘total history’, combined with improvements in flexible computer techniques, has focused fresh analytical attention upon multiform documentary records relating to everyday living and working conditions. Prominent among such sources, for the early modern period of English history, are probate inventories. Their richly detailed and intricate contents are now under renewed scrutiny for many purposes. This survey looks briefly at the general problems highlighted by one batch of urban inventories; and analyses detailed evidence relating to rooms and their use, in the housing of the city of Norwich, 1580–1730. Investigation of 871 surviving inventories yields information about the number of rooms per house (and their heating), plus a survey of room use, as inferred from location of furnishings. These findings illuminate conditions of urban housing, suggest a developing specialisation in room use, and illustrate the manifold complexities of room nomenclature. The study was undertaken for the Norwich Survey, to collate the documentary with the archaeological record. Although it did not prove possible to match inventories directly with surviving seventeenth-century buildings in Norwich, the general picture confirmed the archaeological evidence—especially in showing considerable reorganisation and subdivision of housing in the later seventeenth century.1 The research upon which this article is based was carried out for the Norwich Survey, at the University of East Anglia. The computer scheme was devised by Ursula Priestley and Helen Sutermeister, who was still working on the project, with great stoicism, right up until her untimely death in May 1979. Subsequently, the project has been undertaken by Ursula Priestley; and the text drafted and edited jointly with P. J. Corfield—with an introductory note (P.J.C.), comments on the problems inherent in the source data (P.J.C. and U.P.) and analysis of rooms and room use (U.P.). Special thanks are due to Alan Jenyon at the University of East Anglia Computing Centre, for his interest and invaluable help; to Dr. J. F. Pound for advice on sources; to all the staff of the Norwich Survey, for the production of drawings and data; to Philip Judge for his original drawing of housing on Timberhill; and particularly to Alan Carter, the Survey Director, for his unfailing encouragement and good advice. Copyright to Figures 1 and 10 is retained by the Norwich Survey.  相似文献   

5.
During 1984–85 an area of over 1,500 square metres was excavated on Hartlepool Headland (NZ 528 336) by Cleveland County Archaeology Section. This is the second part of the report on that work, the first, covering the Anglo-Saxon monastic occupation was published in Archaeol. J., 145, henceforth referred to as Daniels 1988b. Following Anglo-Saxon occupation, cultivation took place on the site, to be succeeded in the late eleventh or early twelfth centuries by the establishment of two properties. An earthfast timber building was sited at the front of the northern property, parallel with and probably on the frontage. Behind the building the area was subdivided by a sequence of fence lines and there were indications of cultivation. This phase of occupation ceased with some evidence that the building had burnt down. In the mid-thirteenth century the boundary between the two properties was re-established with a small house (Building III) being built in the southern property. In the northern property three buildings (II, IV, and V) were constructed gable end on to the street and separated by narrow lanes from which access was gained to suites of rooms which were not interconnecting. Throughout the life of these buildings a number of the ground floor rooms contained sequences of ovens used for food processing some of which were evidently used for domestic and others for commercial purposes. The buildings went out of use at the end of the fifteenth century, from which time the area was cultivated prior to its redevelopment in the nineteenth century.  相似文献   

6.
ABSTRACT

Submerged shell midden sites and natural shell deposits can have similar characteristics and can be difficult to distinguish archaeologically. We excavated two test units from a large (at least 35 m×70 m) submerged shell mound in Fort Neck Cove in southern Rhode Island to assess whether it was natural or cultural in origin. This mound had been recognized as a potential archaeological feature as early as the 1970s. Excavation, radiocarbon dating, and subsequent laboratory analysis of excavated materials suggest that the mound was a natural oyster reef rather than a submerged archaeological site. No artifacts were found; there was no clear evidence for human modification of any shells; small species that would not have been targeted as food were present; and δ13C values of oyster shells from the mound were consistent with freshwater input into their growth environment, suggesting that they grew in an estuarine environment that did not exist prior to the inundation of the ponds. The stratigraphically oldest radiocarbon date we could obtain (430–190 cal BP, 2σ range), from 70 cm below the pond floor, placed deposition of shells at least 3,000 years after the inundation of the pond. The excavation methods that we used and the process of testing, irrespective of whether the feature is cultural, are valuable contributions to the methodological literature on submerged site archaeology and help provide insight for other researchers working to discern natural from cultural shell midden sites.  相似文献   

7.
The temperature response of four Phyllocladus aspleniifolius (Celery–top Pine) sites along an altitudinal gradient within a cool temperate broad leaf forest environment in the southwest of Tasmania, Australia was examined. Although strong evidence of a systematically changing response with elevation could not be found, there was evidence that minimum temperature in particular may be important in determining the altitudinal extent of the species. Climatic responses of the Warra LTER (Long Term Ecological Research) area sites were representative of other known sites in southwestern Tasmania. A link between event years in P. aspleniifolius and warm/dry conditions indicates that these event years may provide a guide to the historical frequency of fire weather in Tasmania’s southwest.  相似文献   

8.
ABSTRACT

Fire is one of the most severe threats to stone applied in civil engineering and architecture. In most cases, its effects are irreversible and have long-lasting repercussions. In addition to aesthetic alterations, fire can also induce important mineral-chemical, physical, and mechanical changes in stone. Research concerning the effects of fire on stone materials in recent decades has been providing valuable knowledge to inform present and future conservation and restoration actions. In this literature review, the properties and techniques used for studying the effects of fire on stone materials are appraised, summarized, and compiled. A comprehensive and practical overview of those effects is also given. Open porosity and P-wave ultrasonic velocity are the physical and mechanical properties that have been studied most. Other frequently researched areas include chemical-mineralogical changes, color, density, water absorption, uniaxial compressive strength, and modulus of elasticity are also very frequently investigated.  相似文献   

9.
SUMMARY

The site chosen for excavation in the medieval village at Garrow proved to be a platform-house, a variant of the long-house, a widespread form of peasant dwelling. Both types provided for the shelter of man and his beasts under one roof; in its early form, as here, it consisted of a living-room and byre separated by a passage connecting with an entrance in each long side. The platform-house was suited to meet the hard conditions of life in a hilly country of heavy rainfall. It was built on an oblong platform constructed with its long axis at right angles to the contours of the hillside. Thus the house gained considerable protection from wind and rain.

Two outstanding features were the hearth with fireback centrally placed on the floor in the upper room and the manger which was in situ in the byre. Near the house was a small barn. The two buildings stood in a small enclosure. Pottery found in the house and barn and in the fields connected with the settlement showed that there was occupation from the thirteenth to the fifteenth centuries. Inhabited farmhouses of this type can still be seen in Cornwall.1  相似文献   

10.
On July 25th 1983 a severe thunderstorm brought torrential rain and flooding to a small valley near Newcastleton in Roxburghshire. At one site within the valley, around 65 mm of rainfall was recorded in 75 minutes, though this was probably 2 km from the centre of the storm. The resulting peak flow was estimated at almost 170 m3s‐1 from a drainage area of 36.9 km2. Lightning killed some livestock whilst many more were drowned. The storm triggered peat slides on several hillsides and caused extensive erosion of river banks and damage to buildings and bridges. The associated high sediment load killed fish stocks in the receiving waters. The flood was a significant event in terms of its human disruption and its impact on the natural environment.  相似文献   

11.
ABSTRACT

Building survey is an essential data-collection procedure to feed large-scale seismic vulnerability assessment. The available strategies usually consider survey forms to gather information about the urban buildings. The application of the available survey forms poses important challenges for the case of the heterogeneous urban centers including different structural typologies. This work proposes four specific survey forms for traditional structural typologies constructed with masonry, reinforced concrete, mixed steel-reinforced concrete, and timber. The proposed forms request essential information on the parameters necessary for seismic vulnerability assessment, by evaluating the lateral-load resistant system, regularity, condition of conservation, and existing damages. The survey forms were applied to the study of 111 buildings of the historical center of Valparaíso, Chile. The proposed methodology was complemented with the use of Geographic Information Systems to obtain a complete database with the structural characterization of the most representative typologies for future works of large-scale seismic vulnerability assessment.  相似文献   

12.
Groundwater seeps are known to occur in Eckernförde Bay, Baltic Sea. Their discharge rate and dispersion were investigated with a new schlieren technique application, which is able to visualize heterogeneous water parcels with density anomalies down to Δσt = 0.049 on the scale of millimeters. With the use of an inverted funnel, discharged fluids can be captured and the outflow velocity can be determined. Overall, 46 stations could be categorized by three different cases: active vent sites, seep‐influenced sites, and non‐seep sites. New seep locations were discovered, even at shallow near‐shore sites, lacking prominent sediment depression, which indicate submarine springs. The detection of numerous seeps was possible and the groundwater‐influenced area was defined to be approximately 6.3 km2. Flow rates of between 0.05 and 0.71 l m?2 min?1 were measured. A single focused fluid plume, which was not disturbed by the funnel was recorded and revealed a flux of 59.6 ± 20 ml cm?2 min?1 and it was calculated that this single focused plume would be strong enough to produce a flow rate through the funnel of 1.32 ± 0.44 l m?2 min?1. The effect of different seep‐meter funnel sizes is discussed.  相似文献   

13.
Abstract

This article readdresses Gramsci's use of Italian history, focusing on his judgement that the Italian Renaissance marked the start of a specifically Italian course of historical failure because it led directly to the Counter-Reformation, the Risorgimento and Fascism. It shows that Gramsci's political strategy after 1923 – on the need for a mass socialist movement – informed his historical opinions. His view of a regressive Renaissance contrasted the dominant historiographical consensus that saw it as the start of European modernity. Gramsci conceptualized modern European history according to a Reformation–Renaissance dichotomy that also determined his general sense of culture. By contrasting Catholic Italy (whose Renaissance had failed to lead to a Reformation) with the Protestant north (whose general Renaissance had formed a harmonious couplet with the Reformation), Gramsci reveals that his single greatest debt as a historian was to Weber rather than Marx or Croce.  相似文献   

14.
Abstract

Lawrence J. Vale tells us that “grand symbolic state buildings need to be understood in terms of the political and cultural contexts that helped to bring them into being,” 1 1. Lawrence J. Vale, Architecture, Power, and National Identity (London: Routledge, 1992), 3. and that these buildings can help us understand our national identity. But all buildings are part of a broader political and cultural context. Even unimpressive state-funded buildings express meaning about the politics, power, and priorities of a nation. Because these buildings are not purposefully symbolic, their symbolism has the potential to provide a less contrived—though perhaps less appealing—portrayal of the nation in which they are built. Public housing provides an example of this idea. Public housing in the United States is latent with negative meanings that are reinforced and perpetuated by its architecture, siting, and design. This article examines three historical and iconic public housing communities and analyzes the meanings of these spaces through Goodman's four frames of reference—denotation, exemplification, metaphorical expression, and mediated reference—to determine what these spaces, as architecture, say about the American national identity and our relationship with public housing.  相似文献   

15.
ABSTRACT

The big earthquake of August 24, 2016 and subsequent major shocks severely damaged many historic villages in Central Italy and dramatically showed the intrinsic vulnerability of the diffused architectural heritage. The St. Agostino church is one of the collapsed historical buildings, being inside the epicentre village of Amatrice. During the long seismic earthquake swarm, progressively the church was damaged and monitored. This multidisciplinary study of the damage of the church includes correlations of all the data derived from three steps geomatics surveys (3D aerial and terrestrial models): the archival drawings and images documenting previous events distressing the building, the previous strengthening intervention, and finally the seismic site response analysis (from Amatrice’s accelerometric station). Through a back analysis carried out by a finite elements model, it was possible to understand the seismic vulnerability of this historical building, in relation to the previous interventions and damage events. The proposed methodology, based on the interdisciplinary data analysis, provides useful information for the next strengthening projects of damaged historical monument.  相似文献   

16.
The O2 atmospheric (0–1) night airglow emitted within the gravity wave saturation region at ∼90–100 km can serve as a means of studying the wave activity. In this analysis, the atmospheric motions were described by a mean spectral model and an algorithm was developed to infer the wave kinetic energy density and momentum flux from variations in O2 (0–1) airglow emission rate and rotational temperature. The method was applied to eight nights of data collected by MORTI, a mesopause oxygen rotational temperature imager, during the AIDA campaign of 1989 in Puerto Rico (18°N, 67°W). The observed r.m.s. fractional fluctuations of airglow emission rate and rotational temperature were of the order of ∼0.07–0.15 and ∼0.02–0.04, respectively, and the characteristic vertical wavelengths were estimated at ∼10 2 -20 km. The inferred r.m.s. horizontal velocities and velocity variances were found to be ∼12–25 m/s and ∼150–600 m2/s2, with the majority of the horizontal velocity and its variance associated with low-frequency, large-scale wave motions. The estimated momentum fluxes, mainly contributed by high-frequency, small-scale waves, were ∼2–10 m2/s2. These results are in good agreement with those obtained from other measurements using different observational methods at low and mid-latitudes.  相似文献   

17.
ABSTRACT

The seismic vulnerability assessment of historical UnReinforced Masonry (URM) buildings is a very complex task since it is strongly related to a great variety both of geometrical layouts and of masonry mechanical characteristics. In this article, some results of a Catania University research project, denomined “FIR 2014”, focused on the seismic vulnerability estimation of historical buildings, built in Catania after the 1963 earthquake, are presented. First, a detailed typological analysis of the considered urban fabric, characterized by typical residential masonry buildings, has been performed. Such analysis allowed recognizing an elementary structural modulus, which has been studied according to different geometrical layouts representative of isolated or aggregate buildings. The results of nonlinear static analyses, performed by applying an innovative macro-element approach, allowed for the assessment the seismic vulnerability of typical URM buildings coherently to the Italian seismic code. The adopted macro-element strategy for the seismic assessment of aggregate masonry buildings, although related to a specific historical center, may be applied to similar urban fabrics and can also be used for the calibration and validation of fast seismic assessment strategies, particularly useful for the evaluation of the seismic risk at urban scale.  相似文献   

18.
ABSTRACT

The paper analyzes the static behavior and the seismic vulnerability of the “San Francesco ad Alto” building in Ancona (Italy), which is currently used as a Regional Headquarter of the Marche Region by the Italian Army and was formerly a monastery. The global static structural behavior and the dynamic properties have been evaluated using the Finite Element modeling technique, in which the nonlinear behavior of masonry has been taken into account by proper constitutive laws. The concepts of homogenized material and smeared cracking are used to evaluate the capacity of the monastery to withstand lateral loads together with the expected demands resulting from seismic actions (N2 method), using a nonlinear static analysis (pushover). The comparison of seismic demand and capacity confirms the susceptibility of these types of buildings to extensive damage and collapse, as frequently observed in similar buildings. This paper aims to point out that advanced numerical analyses can offer significant information on the understanding of the actual structural behavior of historical buildings. It is believed that the methodology and the overall conclusions of this case study are valid for many historical monasteries in Europe.  相似文献   

19.
As part of the MAP/WINE campaign (winter 1983–1984) and the MAC/SINE campaign (summer 1987) high resolution wind profiles were obtained in the upper mesosphere using the foil cloud technique. Vertical winds were derived from the fall rate of the foil clouds and are used for estimating the momentum fluxes associated with vertical wavelengths shorter than about 10 km. From the ensemble average of 15 observations over an altitude range of 74–89 km we calculate a zonal net momentum flux of +12.6 ± 4.5 m2s−2 in summer. The average of 14 measurements in winter between 73 and 85 km indicates a zonal net momentum flux of −3.7 ± 2.4 m22 s−2.  相似文献   

20.
Abstract

The incidence of fire damage in southern England fell off steeply about 1780. This is traced to a spreading movement to build or rebuild in brick-and-tile instead of ‘mud’, timber and thatch, reinforced by improvements in fire-fighting. It resulted in the predominantly Georgian central buildings of southern market towns.  相似文献   

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