1,161 research outputs found
The nature of domestic electricity-loads and effects of time averaging on statistics and on-site generation calculations
No full textWright was lead author. Firth is a Research Assistant, supervised by Wright
As principal timpanist with the Boston Symphony Orchestra, Vic Firth was unable
No full textAs principal timpanist with the Boston Symphony Orchestra, Vic Firth was unable to find drumsticks that wereperfectly paired. Today, at 78, the Sanford native is the largest drumstick maker in the world--an enterprise he began in his fifties when he couldn\u27t find drumsticks to suit him. At factories in Kingfield and Newport he has pioneered innovations that pair drumsticks for pitch and resonance and that have brought his company, Vic Firth Incorporated, 60 percent of the market and the endorsements of famous drummers
Australia and the South Pacific: Rising to the challenge
No full textAustralia\u27s vital interests are involved in the South Pacific: the stability of the region is an important factor in our own security, and this translates into on-going defence, security, economic, aid, environmental and humanitarian activities. The island states of the South Pacific face severe challenges to the security needs of their peoples. At the same time they also have advantages that can be leveraged with the right policies. Australia\u27s vital interests are involved in the South Pacific: the stability of the region is an important factor in our own security, and this translates into on-going defence, security, economic, aid, environmental and humanitarian activities.
This report offers a range of suggestions that should be considered in the development of Australia\u27s regional strategy. Authors are: Stewart Firth, Satish Chand, Andrew Goldsmith and Bob Lowry, Bob Breen, Sam Bateman and Anthony Bergin, Graeme Dobell and Richard Herr
Recent estuarine sedimentation rates from shallow inter-tidal environments in western Scotland: implications for future sea-level trends and coastal wetland development
No full textDuring the mid-late Holocene large sections of the Scottish coastline have been characterized by falling relative sea-levels resulting from differential glacio-isostatic uplift of this region of northern Britain. The complex interplay between crustal and sea-level movements continues to influence the morphological development of the Scottish coast. A number of geophysical models predict ongoing uplift of the Scottish landmass. However, a number of recent studies based upon the analysis of satellite altimetry data indicate a late 20th Century acceleration in the rate of eustatic sea-level rise.Detailed geochemistry, radiometric dating, and diatom analysis on selected sediment cores from four mature coastal marsh environments in Argyll, western Scotland, provides an opportunity to investigate the linkages between Twentieth century crustal movements, eustatic sea-level rise and recent rates of sedimentation recorded within marsh sediments across the proposed Scottish glacio-isostatic uplift dome.Solid-phase major and trace element geochemistry has been used to examine the extent to which post-depositional physical disturbance and/or chemical reactions may have influenced the reliability of the radiometric dating methods. Geochemical data indicate that the evolution of these marsh environments has not been significantly influenced by physical disturbance and overall the supply of minerogenic material to the marshes has been quite uniform.Vertical distributions of 210Pbexcess and 137Cs activity have been measured and used to develop models of recent marsh vertical accretion. Dating of the cores reveals subtle variations in the rates of sediment accumulation over the last c. 70 years between sites. For much of the last hundred years or so, sedimentation rates have been in good overall agreement with various estimations for sea-level rise, although at the more easterly sites these estimates are generally exceeded. However, quasi-equilibrium between marsh sedimentation and sea-level rise for much of the Twentieth Century is indicated from the Diatom analysis.Over the most recent period of marsh development (<10 years), a significant increase in the rate of surface sedimentation is recorded at all sites across the study area. Diatom analysis of these surface layers reveals an increase in the relative abundance of marine (polyhalobous) taxa in the near-surface sediments. This signifies a very recent increase in the rate of regional relative sea-level rise indicating that a regional threshold in coastal forcing has now been exceeded.These findings provide clear evidence that recent relative sea-level rise is now outpacing estimated rates of glacio-isostatic adjustment (GIA) across the proposed Scottish uplift dome
Storegga Slide
No full textGlasgow-based author of short stories and psychological thrillers, Louise has developed a poetic statement about our shared origins and culture, accompanied by a series of words translated between Scots and European mainland languages which demonstrate that though our dialects are different we can still be understood.
Emlyn Firth will use a typographic approach to illustrate Louise’s work, playing with themes of language and communication
Morphology and significance of transverse ridges (De Geer moraines) adjacent to the Moray Firth, NE Scotland
No full textHigh-resolution NEXTMap digital surface models and aerial photographs are used to map suites of transverse ridges at Tarbat Ness and to the west of Elgin, along the margins of the Moray Firth in northeast Scotland. Based on their morphology, configuration and location, interpret these landforms as De Geer moraines which formed at or near former grounding line positions of the Moray Firth palaeo-ice stream. The Tarbat Ness De Geer moraines almost certainly formed at a marine margin. Reaching altitudes of 55 m above present OD, these landforms may provide one of the highest geomorphological indicators for former relative sea level in mainland Britain. Evidence from surrounding landforms and sediments suggest that the ridges formed between c. 15 000-18 000 cal yrs BP, indicating that a significant fall in relative sea level may have taken place prior to an ice margin re-advance in the Moray Firth, known as the Ardersier Oscillation
Dynamics and disintegration of the Moray Firth palaeo-ice stream
No full textWe combine the Olex echosounder dataset and high resolution NEXTMap digital surface models with aerial photographs and field observations to build on existing models of Late Devensian ice-sheet deglaciation in the Moray Firth area of northern Scotland. Morphological mapping of the offshore area, coupled with onshore sedimentological investigations suggest that following separation of British and Fennoscandian ice, the dynamics of the north-east sector of the British Ice Sheet was dominated by the Moray Firth ice stream. Onshore, a strongly convergent pattern of highly elongate, mega-scale rock drumlins, glacial grooves and till ridges documents ice flow at that time. Offshore, well-preserved, west-east trending tunnel valley networks indicate a period of significant subglacial drainage. A coherent suite of arcuate ridges preserved on the sea bed in the outer Moray Firth provide evidence for a major glacial advance, which probably took place c. 18 – 22 ka BP. Onshore, geomorphological, lithostratigraphical and sedimentological investigations indicate that at least two significant oscillations of the ice margin took place during retreat, leaving recessional moraines at Elgin and Ardersier. Between these two positions, suites of well-preserved De Geer moraines at Tarbat Ness suggest that relative sea level at the grounding line stood at least 55 metres above present OD. Towards the ice divide around Loch Shin, several fields of Rogen moraine may reflect a local change in thermal regime from cold-based to warm-based conditions, possibly associated with continued late-stage ice stream activity in NE Scotland
Marine Spatial Planning in Action: Pentland Firth and Orkney Waters case study
No full textNo abstracts are to be cited without prior reference to the author. The Marine (Scotland) Act 2010 makes provision for statutory marine planning in Scotland’s seas. • Regional marine spatial planning is being piloted in the Pentland Firth & Orkney Waters area (Figure 1). • This non statutory process will be used to inform the statutory Regional Marine Plans
Magnetostratigraphic calibration of Eocene-Oligocene dinoflagellate cyst biostratigraphy from the Norwegian-Greenland Sea
No full textThe presence of abundant age-diagnostic dinoflagellate cysts in Ocean Drilling Program (ODP) Hole 913B (Leg 151), Deep Sea Drilling Project Hole 338 (Leg 38) and ODP Hole 643A (Leg 104) has enabled the development of a new biostratigraphy for the Eocene–Oligocene interval in the Norwegian–Greenland Sea. This development is important because the calcareous microfossils usually used for biostratigraphy in this age interval are generally absent in high latitude sediments as a result of dissolution. In parallel with this biostratigraphic analysis, we developed a magnetic reversal stratigraphy for these Norwegian–Greenland Sea sequences. This has allowed independent age determination and has enabled the dinocyst biostratigraphy to be firmly tied into the global geomagnetic polarity timescale (GPTS). The relatively high resolution of this study has enabled identification of dinoflagellate cyst assemblages that have affinities with those from the North Sea and the North Atlantic, which allows regional correlation. Correlation of each site with the GPTS has also allowed comparison of the stratigraphic record preserved in each drill-hole. Hole 913B is the most complete and is the best-preserved record of the Eocene and Oligocene in the Northern Hemisphere high latitudes, and can serve as a reference section for palaeoenvironmental reconstructions of this age interval
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