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1.
During the extended El Nin?o drought of 1997–8, fires devastated Indonesia’s forests, creating a vast shroud of smoke that reached as far as mainland Southeast Asia. This article examines the interpretation of these fires — their causes, damages and solutions — by the Indonesian government, international donors, environmental activists and local farmers. It explores the contexts and consequences of these discourses of disaster, and specifically investigates the central role of remote technology — a ‘hegemonic’ representational tool, in some circumstances creatively appropriated to serve new democratic agendas. A narrow focus on remotely sensed data is not strictly a methodological but also a political choice, one which obscures alternative experiences of disaster and produces solutions that do not address long term social and political processes leading to the fires. What is missing from most current analyses of the fires, and from remote assessments in general, is a textured understanding of social landscapes and the role they play in creating fire hazards.  相似文献   

2.
The manipulation of fire is a technological act. The identification of the archaeological signatures of the controlled use of fire has important implications not only for the estimations of the origins and functions of the first fireplaces but also for our understanding of prehistoric technological development and resource use. At Riwi (Kimberley region, Western Australia), excavations over two field seasons have revealed a discontinuous occupation sequence over the past 45 ka, showing numerous, different combustion features interspersed within the deposit. Anthracological and micromorphological investigations at Riwi Cave indicate that the combustion features at the site can be categorised into three types: flat combustion features (type A), dug combustion features (type B) and thick accumulations of mixed combustion residues (type C). These provide evidence for two kinds of combustion practice: (i) fires lit directly on the ground and most likely not re-used and (ii) ground ovens, the latter appearing some 10,000 years after the first evidence for occupation of the site. A comparison of the wood species identified within these combustion features with those from equivalent scattered context levels, enables an exploration of the potential factors influencing wood selection and fire use through time at the site. A detailed understanding of the relationship between wood charcoal remains and archaeological context yields significant information on changes to environmental context and site occupation patterns over time.  相似文献   

3.
The accounts of explorers and colonists in the Kimberley region of Western Australia were searched to find records of landscape burning by Aborigines. Analyses of these records provide estimates of the spatial and temporal patterns of fire across the region in historic times. The seasonality of fire varied across the region. In northern parts of the Kimberley landscape fire was recorded from May to October with peak levels in June and September. In southern parts of the region there are records of burning as early as February and March, through to August but no records of fire were made in late dry season months. Modern fire regimes were compared with historic by superimposing the routes taken by five explorers over a modern fire history map derived from satellite imagery. Tallies of the number of modern fires that intersect the explorer's daily and monthly route were compared with actual observations of fire made by the explorers in historic times. The results indicate an increase in early dry season fires and the overall frequency of fires across the region in modern times. Explorers' accounts were also examined to derive further information regarding Aboriginal landscape burning in different environments and to distinguish landscape burning from other uses of fire such as smoke signals and cooking fires.  相似文献   

4.
The aim of this article is to present an experimental approach for studying the formation and transformation processes of archaeological fire structures. We present a synthetic review of our experimental project, which was developed in many different natural archaeological contexts. We report the results and problems associated with experimental fires lit on different kinds of soils and in different environments, followed by the observation of natural and anthropic transformations. Finally, we analyse the nature and significance of these results for the archaeological interpretation process, while describing some general trends and showing the complexity of the approach.  相似文献   

5.
Abstract

On archaeological sites where livestock dung was a major fuel source, plant material that survives digestion intact may well be preserved in the remnants of dung-fuelled fires. Preserved plant remains which were derived from dung relate to the diet of animals, and thus provide a way of investigating the agro-pastoral economies of the past. In order to improve our understanding of the taphonomic processes to which plant material is exposed to during digestion, we applied archaeobotanical methods to the analysis of dung from sheep fed a known diet of cereal and wild plant material. Two clear patterns emerge from these investigations. First, cereal material (grain or chaff) survives digestion poorly and was rarely found in the dung analysed. Second, large proportions of seeds of various wild species survive digestion in an identifiable form, probably due to their small size and/or protective coating. These findings are crucial for reliable interpretation of dung-derived plant material in archaeological settings.  相似文献   

6.
Abstract

This paper describes how our understanding of turbulence has grown out of engineering practice and how, in turn, it has modified that practice. This is illustrated by discussions of a number of important combustion phenomena embracing steam and gasoline engines, gas turbines, furnaces, jet fires, fire breathing, and atmospheric explosions.  相似文献   

7.
The 7 February 2009 bushfires in the peri‐urban region to the north of metropolitan Melbourne heralded what many have called an entirely new epoch in terms of weather‐related disasters in Australia. A total of 173 people and 2000 properties were destroyed and, as with the 1939 fires in Victoria, a Royal Commission was subsequently instituted to inquire into the causes and responses to the fire. The Royal Commission has heard much evidence about alleged failings of fire response, communication and administration. It also considered land use planning issues and the associated regulatory framework. Using the Shire of Murrindindi as a case study, this paper argues that the location of population growth, and associated regulatory failure, are contributory, yet under‐researched, factors associated with life and property losses. The adoption of more robust planning tools which incorporate climate change considerations, we argue, is essential to anticipate and minimise the impacts of disastrous natural events such as bushfires. In the latter part of the paper, attention is drawn to a recent Victorian Civil and Administrative Tribunal decision which is groundbreaking in its use of the precautionary principle to prevent dwelling construction in an ‘inappropriate’ location as well as to some major inconsistencies between planning for flood and bushfire threats.  相似文献   

8.
清代的消防组织由属于官府的巡城官兵与属于民间的“水会”两大系统组成,行政、军事与消防的一体化管理是清代消防组织的特点。以现代人的眼光来看,清代的消防组织在管理与培训等方面已经具有现代科学化的某些内容。而纵观由太平桶到火烛车再到水龙所形成的救火工具发展的三部曲,我们也不难看到人们在与火灾进行斗争中的进步。  相似文献   

9.
The Mediterranean ecosystem of Mt. Carmel, Israel, is subjected to an increasing number of forest fires of various extents and severities. The impacts of forest fires on runoff and erosion are widely documented and include increased peak flows and soil loss until the return of a vegetation cover. Most studies, however, treat fire as a single event, whereas the present study is aimed at exploring the long‐term effects of repeated forest fires on eco‐geomorphic processes. The study integrates the results of plot‐based, detailed analysis of post‐fire runoff and erosion with vegetation recovery analysis, at a temporal‐spatial scale which includes the effect of reburning. Our results indicate that forest fires lead to a significant increase in runoff and sediment yields, particularly during the first two years following the disturbance, up to five orders of magnitude higher than from the adjacent unburnt control plots.  相似文献   

10.
11.
This article describes a new model that simulates the spread of post-earthquake urban fires. Adapting and integrating compartment fire models, this new model explicitly represents: (1) the evolution of fire within a room or roof; (2) room-to-room spread within a building through doorways, by burning through walls and ceilings, and by leapfrogging between windows; and (3) building-to-building spread by window flame impingement; radiation from window flames, room gas, and roof flames; and branding. The model can be used to explore how much, how fast, where, and by what modes fires will spread, and what factors influence fire spread.  相似文献   

12.
The influence of altered fire regimes on the denudation of a catchment is determined from alluvial deposits of the last 10,000 yrs and by monitoring runoff and erosion before and after a wildfire. An increase in fire frequency beginning at 3,000–4,000 yrs BP, as a result of intensified Aboriginal burning, did not change the mechanisms or rates of denudation nor did it cause widespread alluviation as suggested by others. The results of monitoring show that before and after mild fires there is insufficient runoff on most slopes to entrain sediment. Only after intense fires are runoff and erodibility increased enough to significantly accelerate erosion. Conditions are then identified which are most likely to lead to accelerated erosion from altered fire regimes in other catchments.  相似文献   

13.
Knowledge of the climatological processes that drive the Australian summer monsoon and the ecological consequences of this highly predictable seasonal cycle of wet summers and dry winters has greatly increased over the last several decades. Nonetheless, remarkably little is known about the antiquity of this climate system or how the geographic extent and duration of the monsoon have varied across temporal scales from the recent to the distant geological past. Late Pleistocene sedimentary records from lakes in the interior and north of the Australian continent have been used as a measure of the strength of the palaeo–monsoon. However, in the case of the inland lakes this approach is confounded because it is known that under the contemporary climate, full–lake conditions occur infrequently in response to high rainfall following either a strongly positive ENSO phenomenon (la Nina conditions) or following the continental incursion of tropical depressions. While the general absence of sedimentary and fossil records of the early Pleistocene and late Tertiary prevents elucidation of the timing of onset of the summer monsoon, the degree of biological adaptation of a diverse assemblage of organisms to the wet–dry tropical climate suggests that the summer monsoon climate is of great antiquity. This point is substantiated by a brief review of the ecophysiology of a range of Eucalyptus savanna plant species, the biophysics of the endemic ‘magnetic’ termite mounds and the reproductive cycle of a freshwater turtle. Assuming that the configuration of land and sea is of critical importance in controlling the strength of the Australian summer monsoon, then the notion of great antiquity of the monsoon is also consistent with the fact that for much of the Quaternary, and probably also during the late Tertiary, the relative extent of sea and land has been similar to that of today. The reliable, dry season, southeasterly trade winds create conditions favouring widespread, frequent bushfires. Under both European and Aboriginal management regimes most fires are started by people, although fires can be started by rain–free thunderstorms that occur during the transition between the dry and wet season when intense convection storms are common. Prior to human colonisation such storms would have been an important ignition source for landscape fires, and this may help explain why the north Australian biota is so remarkably tolerant of recurrent fires. The general absence of fossil evidence also frustrates attempts to determine what effect burning by late–Pleistocene human colonisation had on the north Australian landscapes. Given the tolerance of biota to fire, this change may have only affected vegetation structure. Therefore the effect may be very difficult to detect from the pollen record once suitable longer–term records become available. The isotopic signature in extinct and extant ratite eggshells from late Pleistocene sediments in the Lake Eyre basin has been used to infer the destruction of large expanses of woody vegetation by anthropic burning. It has been hypothesised that this changed the hydrological cycle thereby ultimately weakening the continental penetration of the summer monsoon. However, this interpretation is difficult to sustain given the great difficulty in extracting a clear ‘signal’ of an anthropic impact from the inherent variability and fragmentary record of the palaeo–summer monsoon.  相似文献   

14.
In the geography of risk, vulnerability may be defined as a physical characteristic that describes the tendency of a territory to suffer damage as a result of the occurrence of certain phenomena. According to this synthetic definition, there are two main components of vulnerability in the context of wildland fires. The first is internal, and is related to the effects of fires on the value of the affected assets affected and their capacity for recovery. The second is external, and is related to the characteristics of fires and the ability of society to deal with the hazards of wildland fires. The aim of the present study is to develop an assessment of spatial vulnerability in the context of wildland fires, at a scale appropriate for planning (1/25 000), in a mountainous region of the Spanish Mediterranean coast (Sierra Calderona). The proposed methodology entailed the definition of a synthetic index associated with the management of the risk of wildland fires, which was made up of significant factors such as the difficulty of extinction, the need for forest defence, the need for civil protection, and territorial value. To define and calculate the factors, variables and indicators that reflected aspects of the components of vulnerability (such as exposure, sensitivity, and the capacity to fight fires) were used. These were combined in a hierarchical structure, each having its own cartographical representation. Geographical information systems and multi‐criteria evaluation were then used to provide a successful framework for the analysis of vulnerability in relation to wildland fires. The cartographical outputs of the various components of the index are of particular interest to the planning of certain activities (e.g. forest, wildland fire, and civil protection), all of which are directly involved in the management of risk. In turn, the final synthetic index provides comprehensive spatial information that is useful for spatial planning and also enables the assessment of potential future land use in view of its usefulness in simulations.  相似文献   

15.
It is widely recognized that new technologies can play an important role in the interpretation of our cultural heritage legacy. This has become a powerful tool providing a better understanding of our past, and thereby, allowing us to attain a glimpse of the environments in which our ancestors lived. In this domain, the way we see such reconstructed environments is particularly important in order to establish an accurate interpretation of that historical setting. However, the desired visual accuracy in the representation of any archaeological scenario is strictly related to the technology used to visualize it. High Dynamic Range (HDR) technology encompasses the capacity to produce visual results similar to the visual acuity of the human eye, particularly in extreme lighting conditions, such as bright light or dim environments.  相似文献   

16.
Born in California in 1949, reared and educated in Arizona, Pyne earned his bachelor's degree in English at Stanford University and his master's and doctoral degrees in American Studies at the University of Texas at Austin. Pyne has written about fire on earth as none did before him. He has fought fires on the North Rim of the Grand Canyon, collected a unique library on how different cultures have used and misused fire in the past, and consulted on fire management for many agencies throughout the world. He has published seven books, three monographs, fourteen reports, and over fifty articles and essays. A MacArthur Fellow from 1988 to 1993, Pyne is a professor of American Studies at Arizona State University West. He and his wife, Sonja Sandberg, were married in 1977 and have two daughters. They live in Glendale, Arizona, where this interview was conducted in September 1994 by Roger Adelson.  相似文献   

17.
Museums of History and Art provide accounts of the past and the transition of nations into their current situation. They follow a certain line of interpretation of past events which reflect the dominant belief system in a nation. These narratives told in this process leave room for interpretation. Which particular string of the available narratives is followed while neglecting the others, and is influenced by the current self‐understanding of a nation and its political considerations. Latvia and Lithuania, two Baltic Nations, were planning to set up museums of contemporary art in 2009 and in 2011, respectively. Due to the financial crisis at this time, however, both projects have been put on hold. Based on interviews with key personnel and experts, the paper shows how the museums in both countries interpret their Soviet past and align it with the new European master narratives.  相似文献   

18.
ABSTRACT.  This article implements a spatially explicit model to estimate the probability of forest and agricultural fires in the Brazilian Amazon. We innovate by using variables that reflect farm-gate prices of beef and soy, and also provide a conceptual model of field management and deforestation fires to simulate the impact of road-paving, cattle exports, and conservation area designation on the occurrence of fire. Our analysis shows that fire is positively correlated with the price of beef and soy, and that the creation of new conservation units may offset the negative environmental impacts caused by the increasing number of fire events associated with early stages of frontier development.  相似文献   

19.
In the southeastern United States, operators of plantation museums have traditionally engaged in a selective and romanticised remembrance of the antebellum past that has regrettably silenced and marginalised the historical experiences and struggles of enslaved African people. More recently, some plantation managers have sought to engage in the ‘memory-work’ using artistic practices to reconstruct and interpret slavery heritage for visitors. Our study explores museum theatre as a form of memory-work and suggests that theatrical performances of the memories of enslavement are an increasingly important but not yet fully understood strategy for recovering, embodying, and representing a different and hopefully more just narrative about enslaved Africans. We visit three plantation museums where managers hosted a theatrical performance of enslaved oral histories and explore the motivations and experiences of managers and the director of the slave performance. Realising the power and efficacy of theatrical performance as memory-work practice requires understanding how the management of the interpretation process can be difficult. We delve into the emotion-laden challenges confronting slavery-related museum theatre development at the North Carolina plantations and discuss the creative response formulated at the sites to help visitors work through unexpected feelings and understandings about the past.  相似文献   

20.
Certain aspects of the formation processes of simple, flat archaeological combustion structures such as those present in the Middle Palaeolithic record remain unexplained. Such kind of combustion structures are commonly affected by postdepositional agents and often, their only distinct, well preserved component is a thin black lens on the ground. Hence, understanding the nature of this black lens is essential towards archaeological interpretation. From an interdisciplinary microstratigraphic approach, we present a case study in which for an entire experimental series of flat combustion structures the black layer represents the fire-altered topsoil on which the fire was made. Parallel analysis of archaeological Middle Palaeolithic combustion structures from the site of El Salt (Alicante, Spain) reveal similar patterns, leading to significant implications for archaeological interpretation. In the light of these results, special attention must be paid to the formation processes of flat Middle Palaeolithic combustion features, as black layers and the material contained in them are not necessarily linked with combustion but with preceding activities or events. In such cases, black layers represent intact remnants of occupation surfaces, concealing significant behavioural and palaeoenvironmental information relevant to the reconstruction of Middle Palaeolithic societies.  相似文献   

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