Seventeenth-Century Vehicle of the Middle Passage: Archaeological and Historical Investigations on the Henrietta Marie Shipwreck Site

This study describes the archaeological investigations that have taken place at the wreck site of the English slave ship Henrietta Marie (1700) since its location in 1972. Information is provided on the methodology utilized during on-site archaeological data recovery, and the artifacts retrieved from the wreck site are described in detail. An account of complimentary documentary research on this wrecked slaver is also presented. Contemporary historical data gleaned from shipping lists, slaver’s logs, seamen’s wills and other sources are utilized to place Henrietta Marie within her proper context as a vehicle involved in the notorious transatlantic slave trade.     

The application of structured‐light illumination microscopy to hydrocarbon‐bearing fluid inclusions

Structured‐light illumination (SLI)‐based microscopy offers geologists a new perspective for screening of hydrocarbon‐bearing (HCFI) and small aqueous fluid inclusion (AFI) assemblages. This optical‐sectioning technique provides rapid, confocal‐like imaging, using relatively simple and inexpensive instrumentation. The 3D fluorescent images of HCFI planes and large single HCFIs permit the visualization of the relationships between HCFI assemblages, examination of HCFI morphology, and volume estimates of the fluorescent components within HCFIs. By the use of normal white light illumination, SLI image capture, and varying acquisition time it is also possible to image AFI because of the random movements of vapour bubbles within the inclusions. This allows the near‐simultaneous visualization of hydrocarbon and AFI which is of significant importance for the study of sedimentary basins and petroleum reservoirs. SLI is a unique and accessible 3D petrographic tool, with practical advantages over conventional epifluorescence and confocal laser scanning microscopy.     

Heat transport at boiling,near‐critical conditions

Two‐phase flow and near‐critical phenomena are likely to enhance energy transport in high‐temperature hydrothermal systems. We present a series of two‐dimensional simulations of two‐phase flow of pure water at near‐critical conditions. The results show that at near‐critical conditions, two‐phase convection can be more efficient in transporting energy than single‐phase convection. The highest heat fluxes are attained when two‐phase heat‐pipes form near the bottom boundary, recharging the root of the upflow zone and thereby enabling the formation of broad upflow regions. When the system becomes more vapor‐dominated, it loses this ability, upflow zones become narrower and the energy efficiency drops to more moderate values.     

The Work‐Life Balance: Geographical Perspectives on Lifestyle,Leisure, Stuff and the FuturePresidential Address to the Institute of Australian Geographers’ Conference,Hobart, July 20081

The work‐life balance is a pressing social issue in Australia but one on which geographers have been relatively silent. Predictions of ‘a leisure society’ have not been fulfilled. Instead, work has come to dominate life in Australia and in many other advanced western societies. The reasons for this are explored. Materialism is at the heart of the work‐life imbalance. There is, however, evidence of a changing work ethic and the emergence of leisure‐orientated lifestyles, albeit with ‘leisure’ interpreted as ‘freedom to’ undertake gratifying activity rather than simply ‘freedom from’ obligatory commitments. Despite the supposed homogenising influence of globalisation and the internet, place will become increasingly important in a leisure‐orientated lifestyle‐led future.