Southwest Arabia During the Holocene: Recent Archaeological Developments

Recent fieldwork has considerably increased our knowledge of early Holocene settlement in Southwest Arabia. Neolithic settlement occurred within an environmental context of increased monsoonal moisture that continued during the mid-Holocene. A now well-attested Bronze Age exemplified by village- and town-scale settlements occupied by sedentary farmers developed toward the end of the mid-Holocene moist interval. The high plateau of Yemen was an early focus for the development of Bronze Age complex society, the economy of which relied upon terraced rain-fed and runoff agriculture. On the fringes of the Arabian desert, the precursors of the Sabaean literate civilization have been traced back to between 3600 and 2800 B.P., and even earlier, so that a virtually continuous archaeological record can now be described for parts of Yemen. In contrast to the highlands these societies relied upon food production from large-scale irrigation systems dependent upon capricious wadi floods. Bronze Age settlement, while showing some links with the southern Levant, now shows equal or stronger linkages with the Horn of Africa across the Red Sea. Although some regions of Yemen show breaks in occupation, others show continuity into the Sabaean period when a series of major towns grew up in response to the incense trade with the north. It is now clear that these civilizations grew up on the foundations of earlier Bronze Age complex societies.     

Surface controls on the characteristics of natural CO2 seeps: implications for engineered CO2 stores

CO₂ injected into rock formations for deep geological storage must not leak to surface, since this would be economically and environmentally unfavourable, and could present a human health hazard. In Italy natural CO₂ degassing to the surface via seeps is widespread, providing an insight into the various styles of subsurface ‘plumbing’ as well as surface expression of CO₂ fluids. Here we investigate surface controls on the distribution of CO₂ seep characteristics (type, flux and temperature) using a large geographical and historical data set. When the locations of documented seeps are compared to a synthetic statistically random data set, we find that the nature of the CO₂ seeps is most strongly governed by the flow properties of the outcropping rocks, and local topography. Where low‐permeability rocks outcrop, numerous dry seeps occur and have a range of fluxes. Aqueous fluid flow will be limited in these low‐permeability rocks, and so relative permeability effects may enable preferential CO₂ flow. CO₂ vents typically occur along faults in rocks that are located above the water table or are low permeability. Diffuse seeps develop where CO₂ (laterally supplied by these faults) emerges from the vadose zone and where CO₂ degassing from groundwater follows a different flow path due to flow differences for water and CO₂ gas. Bubbling water seeps (characterized by water bubbling with CO₂) arise where CO₂ supply enters the phreatic zone or an aquifer. CO₂‐rich springs often emerge where valleys erode into CO₂ aquifers, and these are typically high flux seeps. Seep type is known to influence human health risk at CO₂ seeps in Italy, as well as the topography surrounding the seep which affects the rate of gas dispersion by wind. Identifying the physical controls on potential seep locations and seep type above engineered CO₂ storage operations is therefore crucial to targeted site monitoring strategy and risk assessment. The surface geology and topography above a CO₂ store must therefore be characterized in order to design the most effective monitoring strategy.     

Book reviews—comptes rendus

Themes in Political History—Thèmes en histoire politique

Peter BLICKLE ed., Resistance, Representation and Community, Oxford University Press, Origins of the Modern State in Europe, 13th‐18th Centuries Series, Oxford, 1997, 401 pp. ISBN 0–19–820548–1. £50.00.

J. L. MERRITT ed., The Political World of Thomas Wentworth, Earl of Strafford 1621–1641, Cambridge University Press, Cambridge, 1996, 307 pp. ISBN 0–521–560–411. £40.00.

Themes in Napoleonic Studies—Etudes sur Napoléon

Malcolm CROOK, Napoleon comes to power: Democracy and Dictatorship in Revolutionary France, 1795–1804, University of Wales Press, Cardiff, 1998 ISBN 0–7083–1461–9 (hardback) £15.00, ISBN 0–7083–1401–5 (paperback) £7.95.

Christopher PRENDERGAST, Napoleon and History Painting. Antoine‐Jean Gros's La Bataille d'Eylau, Clarendon Press, Oxford, 1997, xiv + 223 pp., ISBN 0–19–817402–0 £45.00.

Matthew TRUESDELL, Spectacular Politics. Louis‐Napoleon Bonaparte and the Fête Impériale, 1849–1870, Oxford University Press Oxford, 1997, viii + 238 pp., ISBN 0–19–510689‐X £35.00.

Themes in Twentieth‐Century History—Aspects de l'histoire du vingtième siècle

Götz ALY, Macht‐Geist‐Wahn. Kontinuitäten deutschen Denkens, Argon, Berlin, 1997, 220pp., ISBN 3–87024–361–9.

Holger H. HERWIG, The First World War: Germany and Austria‐Hungary 1914–1918, Modern Wars, Arnold, London, 1997, xx + 490 pp. ISBN 0–340–67753–8 (hb), 0–340–57348–1 (pb) £16.99.

Lonnie R. JOHNSON, Central Europe: Enemies, Neighbours, Friends, Oxford University Press, Oxford, 1996, xi + 339 pp., ISBN 0–19–510071–9 (hardback) £27.00. 0–19–510072–7 (paperback) £15.00.

Iwao Peter SANO, One Thousand days in Siberia: The Odyssey of a Japanese‐American POW, University of Nebraska Press, Lincoln and London, 1997, xvii + 210pp., ill., ISBN 0–8032–4262‐X £23.95.

Martin THOMAS, Britain, France and Appeasement: Anglo‐French Relations in the Popular Front Era, Berg, Oxford, 1996, x + 268pp., ISBN 1–85973–192–9 £29.95 and £12.95.     

Taphonomy and zooarchaeology of a high-altitude Upper Pleistocene faunal sequence from Hovk-1 Cave,Armenia

The Caucasus is a key region for the study of hominid evolution and Neanderthal ecology. Taphonomic and zooarchaeological studies of sites from this region are few and only focused on sites at low-to-mid altitude zones with evidence of relatively intensive hominid occupation. This study focused on the taphonomic and zooarchaeological characteristics of a high-altitude site from the Upper Pleistocene – Hovk-1 Cave – looking at diachronic change in both natural and cultural processes which shaped the faunal assemblage. Results best fit a model in which the bones of most large mammals, mainly ungulates (wild goat, Capra aegagrus and red deer, Cervus elaphus) and cave bears (Ursus spelaeus) accumulated naturally through pitfalls, with minimal input from human or carnivore activity. This accumulation is characterized by a high frequency of complete ungulate and carnivore bones, a bear assemblage which is dominated by young-adults and a wild goat assemblage that includes juvenile and young-adult individuals. Our taphonomic reconstruction serves as a point of reference for comparative studies of palaeoenvironments and human subsistence patterns of Middle and Upper Palaeolithic sites in the Caucasus and broadens our perspective on hominid occupation and ecological adaptation in other high-altitude world regions.     

Natural flood management: small-scale progress and larger-scale challenges

ABSTRACT

Management of fluvial flood risk in the UK is undergoing a paradigm shift, with a change in emphasis from solely working with structural defences to considering catchment-based measures which attenuate flood runoff. Natural Flood Management (NFM) is promoted as a method that can reduce flood risk through the alteration, restoration or use of landscape features. Here we highlight the potential to manage runoff locally in the rural landscape using NFM by targeting flow pathways and utilising floodplains and riparian zones. Using two case study examples from the UK, we show that by accumulating dispersed small-scale storage in small catchment areas (<10 km²) can assist in attenuating flood runoff. However, there is currently a lack of evidence of measure effectiveness at larger catchment scales and for managing extreme flood events. Nevertheless, there is a strong evidence base to suggest many of these measures deliver a range of different ecosystem services if installed in the correct location in the landscape.