Subjectivity,Power, and the IRB

A substantial literature in social sciences, including law and society, examines the intersections of research ethics and institutional review board (IRB) frameworks. Although geographers have engaged this literature, we argue that further involvement in ethical and regulatory discussions will advance opportunities for better understanding and negotiating the complex subjectivities produced in the IRB structure. Drawing on illustrative experiences of researchers, we focus specifically on the institutions convening IRBs, the researchers, and the human “subjects” produced in the IRB process. We conclude with a call for greater open discussion of the power dynamics, subjectivities, and challenges of formal ethical research structures.     

江苏海安青墩地区新石器时代环境考古

通过对海安青墩遗址剖面进行磁化率、粒度、孢粉、14 C测年等指标分析 ,结果表明 ,剖面第 8层至第 7层是一个海退过程 ,同时微体古生物分析表明这两层均无有孔虫 ,可知当时此区域离海较远。第 8层到第 7层气候向暖湿方向转化 ,良好的气候环境条件为后来该区域人类活动的发展创造了条件。测年资料表明第 6层为距今 3790± 10 5 14 CaB .P .,是大暖期后面的一个气候波动和缓的亚稳定暖湿期 ,当时中国绝大部分地区气候要比现今暖湿。剖面的第 3、 4、 5层 ,即 4 0 0 0 14 CaB .P .以来的一个时期 ,该区出现了一洪水泛滥期 ,正是这一洪水期导致该区域人类文明的衰落。     

Invisible homelessness: anonymity,exposure, and the right to the city

The city of Denver, Colorado recently outlawed camping in all open space. Part of a broad effort to accelerate the profit potential of prime urban land through real estate speculation and commerce, the camping ban has dislocated homeless people from the city’s marginal spaces. Based on ethnographic fieldwork and archival research in Denver, this article develops a tripartite approach to public space—prime, everyday, and marginal—to analyze challenging ways in which people who are homeless in Denver must now manage their exposure to others in everyday public spaces. In addition to eliminating places of hard-won safety and security, this singular new code disrupts hygiene, mobility, and sociability routines, thus throwing already precarious lives into further disarray by rendering housing status visible. To demonstrate how everyday social justice springs from interaction between different people co-present in public space, we foreground the voices of Denver’s homeless people, those most impacted by quality of life laws. Evicting individuals from marginal spaces and rendering them visibly homeless in everyday and prime spaces, the ban deprives them of a fundamental right to the city: anonymity.     

Material use,economic growth,and the environment

The three broad categories of commodity inputs to the economy are food, fuel, and material, defined as everything else not used for the first two purposes. Material provides physical structure, houses, cars, and packaging; is an important constitutent of modern agriculture in the form of fertilizer and insecticides; and supports the service sector through telecommunications and equipment and paper for our copying machines. The efficient flow of this material is an important factor in the U.S. economy.Correspondence should be directed to Earle B. Amey, U.S. Geological Survey, National Center 983, Reston, Virgina 20192.     

The city,the (Member) state,and the European Union

This contribution to a Debate on “The Nation-State and the city” foregrounds the recently adopted Urban Agenda for the European Union. It discusses the new role of cities in the European policy making process and its relevance for relations between State and City in the light of EU membership.     

新疆孔雀河流域人工绿洲近40年土地利用/覆被变化

区域尺度土地利用/覆被变化（LUCC）时空特征及驱动力是研究大尺度变化乃至全球变化演变过程的基础,而干旱区LUCC对区域水文、生态影响尤为显著,是全球变化研究的重点之一。以新疆孔雀河流域上游作为研究区,基于1977-2015年6期Landsat数据,采用多规则人机交互目视解译的方法完成LUCC制图,并利用LUCC模型从数量变化、空间变化、土地利用集约程度变化等多方面分析了近40年来该区域LUCC特点及演变机制。结果表明：（1）研究区仅有耕地和建设用地面积增加,且增幅均在200%以上,其他土地类型面积则均有不同程度的减少;（2）耕地变化呈现出空间集聚现象,而建设用地的扩张则呈现空间连续性;（3）2000年前后自然植被经历小幅退化—恢复过程;（4）受西部大开发、塔里木河生态综合治理工程等多种因素影响,2000-2005年间,空间变化的综合动态度最高（2.76%）;（5）自然因素影响较小,人口增长和政策因素是主要驱动因子。     

Glacier balance trends in the Kongsfjorden area, western Spitsbergen, Svalbard, in relation to the climate

For the last thirty years, the mean net balance of two glaciers, Austre Brøggerbreen and Midre Lovénbreen, has been -0.43 and -0.34 m of water equivalent (w.e.). respectively. The mean net balance of Kongsvegen, a tidewater glacier that has been measured since 1987, is 0.11 m w.e. The negative balances of the two first glaciers are driven by the increase in atmospheric temperature which occurred at the end of the Little Ice Age at the beginning of the century. The positive balance of Kongsvegen is due to its higher elevation and larger accumulation area. There is no significant trend in the net balances and no increase of the melting has been detected during the last thirty years.
A correlation coefficient of R = 0.83 has been obtained between the net balance of Lovénbreen and the winter precipitation, together with the summer temperature recorded at the neighbouring station of Ny-Ålesund since 1969. With 14 years of data, the correlation coefficient between the net balance and climatic parameters does not increase consistently by introducing any radiation component, but the coefficient correlation between the summer balance of Austre Brøggerbreen and summer temperature increases from 0.68 to 0.77 when introducing global and long-wave radiation for July and August. Weather conditions and the frequency of their changes influence the balance between global and long-wave radiation and changes in albedo values.     

Seismic quiescence before the M 7, 1988, Spitak earthquake, Armenia

A detailed analysis of the 35  yr of seismicity between 1962 and 1997 using a gridding technique shows that the M 7, Spitak earthquake of 1988 December 7 was preceded by a quiescence anomaly that started at approximately 1984±0.5, and lasted about 5±0.5  yr, up to the main shock. This quiescence anomaly had a radius of about 20±3  km, estimated from circular areas with 75 per cent rate decrease, centred at the point of maximum significance of the anomaly. The quiescence was clearly present in the aftershock volume during the 5  yr before the 1988 main shock, but its statistically strongest expression was located 30  km NW of the epicentre. This anomaly fulfills the association rules between precursory quiescence anomalies and main shocks, even for a tight definition, and is therefore proposed as a case of precursory quiescence. The largest value of the standard deviate Z , found by random selection of samples by gridding, was Z =14 for a time window of T _w=3  yr, using a sample size of N =300 events. This makes this anomaly the strongest observed so far, and it is the first documented in an environment of continental collision. There are no false alarms exceeding in significance the precursor. The Armenian earthquake catalogue used for this study had 4600 earthquakes with M ≥ M _min=2.2 in the area bounded by 39.5° to 42°N/42.5° to 47°E. From the point of view of homogeneous reporting this is the best catalogue we have analysed so far. The limits of the data used and the density of the grid are dictated by the data, and have no influence on the results. The choice of free parameters does not influence the results significantly within the following limits: 100≤ N ≤500, 2≤ T _w≤7, 2.2≤ M _min≤2.8.     

Palaeomagnetism of the Fishnish dykes, Mull, Scotland

summary . In Fishnish, eight dykes of E-W trend are all normally magnetized and all cut dykes of other trends. Normally magnetized dykes form a small minority of the dykes in the British Tertiary igneous province and this is the first reported incidence of a clearly defined group of a single polarity. The balance of the evidence - which is conflicting — favours the E—W dykes being contemporary with the later parts of the centre.     

Globalisation, the Economic Crisis, and Small Enterprises in Makassar, Indonesia: Focusing on the Local Dimensions

It has been suggested that the economic crisis in Southeast Asia had a severe effect on small scale enterprises in the region. In this paper, I interpret the different consequences of this economic crisis ( krismon ) for small enterprises in the city of Makassar, Sulawesi, in the light of current globalisation debates. It is argued that for the majority of small enterprises, there have not been significant changes because of the relative isolation of Sulawesi within the Indonesian and global economies. However, for other small enterprises, there have been two significant changes indirectly linked to wider globalisation influences, because of the importance of conspicuous consumption amongst local cultural groups. In turn, this leads to an evaluation of both the strength of globalisation tendencies in the city, and the important influence of local cultural traits on the ways in which members of the local economy have responded to change.     

The origin of the Sierra de Aracena Hollows in the Sierra Morena, Huelva, Andalucia, Spain

Hollows in the Sierra de Aracena, part of western sector of Sierra Morena region (Huelva, Spain), are geoecologically unusual macroforms. They are underlain by deeply weathered bedrock but have eutrophic soils with distinctive vegetation. Paleosols with very dark colours, a predominance of smectites and large amounts of total and free iron occur on the floors on the hollows. An evolutionary model is proposed for the hollows, involving differential weathering during the Mesozoic on plutonic and amphibolitic rocks, alpine tectonic activity followed by Quaternary erosion and exhumation leading to formation of erosional terraces.     

Diatom,pollen, and geochemical evidence for the palaeosalinity of Medicine Lake,S. Dakota,during the late-Wisconsin and early Holocene

Medicine Lake is a highly saline meromictic lake in eastern South Dakota. A lithostratigraphic and biostratigraphic study of the late-glacial and early post-glacial sediments shows that it was a relatively deep dilute freshwater lake during the period of the Picea pollen zone. When spruce forest changed to a Betula and then to a Quercus/Ulmus woodland in the early post-glacial period, the lake water became more concentrated but remained fresh. However, during the subsequent rapid transition to prairie in the early Holocene, when Gramineae, Ambrosia, and Artemisia dominated dry-land vegetation, the freshwater diatom flora was progressively replaced by a saline assemblage characterized by Cyclotella quillensis, Chaetoceros, and eventually Cyclotella caspia. The lake became permanently saline at about 9000 yr BP. A comparison of the fossil diatom assemblages with surface-sediment samples from a range of lakes in the Dakotas indicates that the change involved an increase in conductivity from about 500 S cm^–1 in the late-glacial period to > 10 000 S cm^–1 in the early Holocene. This rapid change is also marked by an abrupt increase in sulphate concentration in the sediment, the first appearance of bands of gypsum crystals, and the beginning of a well-laminated core sequence that continues through the remaining sediment record. Conditions of high salinity have prevailed to the present day.Contribution 299, Limnological Research Center.     

人文自然耦合视角下过渡性地理空间概念、内涵与属性和研究框架

从人文自然耦合的视角看,过渡性地理空间是介于自然和人文之间的复合地带,凸显人地关系地域系统的特殊性与复杂性。其中,山区是过渡性地理空间的主体,是全国国土空间高质量发展与治理的关键区域,对其系统深刻理解与认知亟待全面加强。立足于人文自然耦合系统层面阐释过渡性地理空间的概念、内涵与属性,并借鉴多学科理论与方法,结合地理编解码技术,探索性提出基于色差渐变原理的过渡性地理空间研究的科学框架,以期深刻阐释过渡性地理空间人文自然耦合演化过程及其机理,并为提升过渡性地理空间国土空间功能与优化国土空间开发格局提供科学指导和决策依据,这对于丰富人地关系地域系统研究做出新的探索具有应用价值。     

Geomorphology of subglacial volcanoes in the Azas Plateau, the Tuva Republic, Russia

The Azas Plateau volcanic field is located in the Tuva Republic of the Russian Federation. The compositions of the Azas Plateau volcanics include low-viscosity trachybasalt and basanite. Volcanic edifices of Middle-Late Pleistocene age are widely distributed in the southeastern part of the volcanic field. There are subglacial volcanoes among the volcanic edifices, and their formation coincided with extensive ancient glaciations in the region. The dominant subglacial volcanoes in the area are tuyas. The general shapes of the tuyas (flat-tops with steep sides) are due to eruptions into meltwater lakes and confinement of ice walls, and effusive subaerial eruptions of basaltic lavas. There are also non-flat-topped subglacial volcanoes and at least one subaerial volcanic edifice in the area. Degradation appears to have modified the primary shapes of the tuya edifices, and such processes seem to include failures of over-steepened slopes, gully formation due to stream runoff and debris flows, cirque/valley glaciation, and modification by rock glaciers. The estimated thicknesses of the ice sheets covering the subglacial volcanoes during their eruptions range 300–600 m on average.     

Tundra degradation in the vicinity of the Polish Polar Station, Hornsund, Svalbard

Studies performed in the summers of 1979 and 1980 in the surroundings of the Polish Polar Station at Hornsund, Svalbard, aimed at determining the impact of the presence of a research station on its immediate tundra surroundings. The sources of environmental degradation were singled out; the ways of expansion of various contaminants and the degree of their harmfulness to the environment were evaluated. This gave insight into the extent of tundra degradation in the vicinity of a polar research station. It was found that the heaviest impacts were caused by changes in the chemical composition of the soil, resulting from spills of petroleum-derived fuels, and by transport which damaged the surface of the tundra.     

Tardigrada from the Husvik area, South Georgia, sub-Antarctic

Eleven species of tardigrades in South Georgia, of which two are new to science, were found in samples collected at fifteen localities. The highest number of species was found in moss from a scree field. Twenty species of tardigrades are presently known from South Georgia, but the island remains insufficiently investigated. The species composition is similar to that of southern South America. The high number of cosmopolitan species makes the geographical distribution pattern of the South Georgian tardigrades more similar to that of macrolichens than to that of insects and vascular plants.     

Snow accumulation, melt, mass loss, and the near-surface ice temperature structure of Irenebreen, Svalbard

This study examines the mass balance, accumulation, melt, and near-surface ice thermal structure of Irenebreen, a 4.1 km² glacier located in northwest Spitsbergen, Svalbard. Traditional glaciological mass balance measurements by stake readings and snow surveying have been conducted annually at the glacier since 2002, yielding a mean annual net mass balance of −65 cm w.e. for the period 2002–2009. In 2009, the annual mass balance of Irenebreen was −63 cm w.e. despite above-average snow accumulation in winter. The near-surface ice temperature in the accumulation area was investigated with automatic borehole thermistors. The mean annual surface ice temperatures (September–August) of the accumulation area were −3.7 °C at 1 m depth and −3.3 °C at 10 m depth. Irenebreen is potentially polythermal, with cold ice and a temperate surface layer during summer. This temperate surface layer is influenced by seasonal changes in temperature. In winter, the temperature of all the ice is below the melting point and temperate layers are probably present in basal sections of the glacier. This supposition is supported by the presence of icings in the forefield of Irenebreen.     

Tourism,forest conversion,and land transformations in the Angkor basin,Cambodia

The Angkor basin of Cambodia, the site of the great Angkor temple complex, has experienced explosive tourism growth since the 1993 onset of national political stability and renewed international investment, which in turn has driven increasing demand for water, wood, and biomass fuel, and rapid and extensive land-use and land-cover change. We use multi-temporal Landsat imagery (1989–2005) to describe the rate and extent of land-cover change throughout the Angkor basin. While 50% of the landscape remained in rice agriculture it is notable that a larger proportion of the area was deforested (23.4%) than experienced forest regrowth (4.9%). Most forest loss occurred between the Angkor temple complex and Phnom Kulen National Park, and was due in part to charcoal production to serve the tourist industry, and also conversion to permanent agriculture. The small area of forest increase was concentrated along the eastern boundary of the main Angkor complex. The interplay among global (tourism, climate), regional (national policies, large-river management), and local (construction and agriculture, energy and water sources to support the tourism industry) factors drives a distinctive but complex pattern of land-use and land-cover change.