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"Rutland"
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Improving flood hazard datasets using a low-complexity, probabilistic floodplain mapping approach
As runoff patterns shift with a changing climate, it is critical to effectively communicate current and future flood risks, yet existing flood hazard maps are insufficient. Modifying, extending, or updating flood inundation extents is difficult, especially over large scales, because traditional floodplain mapping approaches are data and resource intensive. Low-complexity floodplain mapping techniques are promising alternatives, but their simplistic representation of process falls short of capturing inundation patterns in all situations or settings. To address these needs and deficiencies, we formalize and extend the functionality of the Height Above Nearest Drainage (i.e., HAND) floodplain mapping approach into the probHAND model by incorporating an uncertainty analysis. With publicly available datasets, the probHAND model can produce probabilistic floodplain maps for large areas relatively rapidly. We describe the modeling approach and then provide an example application in the Lake Champlain Basin, Vermont, USA. Uncertainties translate to on-the-ground changes to inundated areas, or floodplain widths, in the study area by an average of 40%. We found that the spatial extent of probable inundation captured the distribution of observed and modeled flood extents well, suggesting that low-complexity models may be sufficient for representing inundation extents in support of flood risk and conservation mapping applications, especially when uncertainties in parameter inputs and process simplifications are accounted for. To improve the accuracy of flood hazard datasets, we recommend investing limited resources in accurate topographic datasets and improved flood frequency analyses. Such investments will have the greatest impact on decreasing model output variability, therefore increasing the certainty of flood inundation extents.
Journal Article
Experimental and Analytical Investigation of Spontaneous Imbibition in Water-Wet Carbonates
We perform co-current spontaneous imbibition ambient-condition experiments in three carbonates with a wide range of permeability under strongly water-wet conditions. We measure water saturation profiles as a function of distance and time in air-filled rocks with no initial water saturation using X-ray CT scanning. We demonstrate that the saturation profiles are functions of distance divided by the square root of time. We also demonstrate that the profiles are consistent with analytical solutions for imbibition in one dimension, and using reasonable estimates of relative permeability and capillary pressure, we can match the experimental results. We discuss how, in combination with conventional measurements of relative permeability (steady-state or using Buckley–Leverett theory in an unsteady-state experiment), the capillary pressure can be determined, or how the relative permeability can be determined from the spontaneous imbibition experiment and the capillary pressure.
Journal Article
Measurement of single kidney glomerular filtration rate in dogs using dynamic contrast-enhanced magnetic resonance imaging and the Rutland-Patlak plot technique
Background
Nephropathies are among the most common diseases in dogs. Regular examination of the kidney function plays an important role for an adequate treatment scheme. The determination of the glomerular filtration rate (GFR) is seen as the gold standard in assessing the kidney status. Most of the tests have the disadvantage that only the complete glomerular filtration rate of both kidneys can be assessed and not the single kidney glomerular filtration rate. Imaging examination techniques like dynamic contrast-enhanced magnetic resonance imaging have the potential to evaluate the single kidney GFR. There are studies in human medicine describing the determination of the single kidney GFR using this technique. To our knowledge there are no such studies for dogs.
Results
An exponential fit was found to describe the functional interrelation between signal intensity and contrast medium concentrations. The changes of contrast medium concentrations during the contrast medium bolus propagation were calculated. The extreme values of contrast medium concentrations in the kidneys were reached at nearly the same time in every individual dog (1st maximum aorta 8.5 s, 1st maximum in both kidneys after about 14.5 s; maximum concentration values varied between 17 and 125 µmol/mL in the aorta and between 4 and 15 µmol/mL in the kidneys). The glomerular filtration rate was calculated from the concentration changes of the contrast medium using a modified Rutland-Patlak plot technique. The GFR was 12.7 ± 2.9 mL/min m
2
BS for the left kidney and 12.0 ± 2.2 mL/min/m
2
BS for the right kidney. The mean values of the coefficient of determination of the regression lines were averagely 0.91 ± 0.08.
Conclusions
The propagation of contrast medium bolus could be depicted well. The contrast medium proceeded in a similar manner for every individual dog. Additionally, the evaluation of the single kidney function of the individual dogs is possible with this method. A standardized examination procedure would be recommended in order to minimize influencing parameters.
Journal Article
Iron Age, Roman and Anglo-Saxon Settlement along the Empingham to Hannington Pipeline in Northamptonshire and Rutland
Between January 2008 and July 2009, Northamptonshire Archaeology, now part of MOLA (Museum of London Archaeology), carried out a series of excavations along the route of a new water pipeline being constructed by Anglian Water Services as part of a major project to increase the supply of water to new homes and businesses in the south-east Midlands region. Nineteen sites were investigated, dating primarily to the Iron Age, Roman and Anglo-Saxon periods. The earliest remains were a late Bronze Age/early Iron Age pit alignment near Seaton, Rutland. The Iron Age and Roman sites were small rural settlements comprising ditched enclosures, the remains of roundhouses and pits. Settlements were located near Seaton and Caldecott in Rutland and in Northamptonshire at Swinawe Barn near Corby, Thorpe Malsor, White Hill Lodge, Great Cransley and Willows Nursery. A Roman site near Rushton, Northamptonshire may be associated with a villa estate. Other sites included part of a Roman field system at Violet Lane, near Corby, and Roman cremation burials near Gretton, Northamptonshire. The settlements mainly date from the late middle Iron Age, 2nd century BC, through to the 4th century AD, although there was little evidence for direct continuity of settlement between the Iron Age and Roman periods. An Anglo-Saxon cremation cemetery dated to the late 5th century to mid-7th century AD, at Glaston, Rutland, contained 16 cremation burials deposited in decorated and plain urns along with small assemblages of grave goods, often also burnt on the pyre, and including a brooch, glass beads, and fragments of a bone comb and mount. Later features generally comprised medieval and post-medieval furrows from ridge and furrow field systems and field boundary ditches.
eBook
Road trip. Discover Rutland, Vermont
Let's tour small-town Americana with our hosts Nick and Brian as they take you along for \"the ride\" as they get up close and personal with the awesome people and places that make this great nation rock - all while in their 1968 gold drop top Cadillac!
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Characterization of the 26 December 2004 tsunami deposits in Andaman Islands (Bay of Bengal, India)
The large tsunami, which was generated by an earthquake on 26 December 2004, affected most of the countries around the Indian Ocean. A total of 48 tsunamigenic surface sediments and nine core samples have been collected from various coastal geomorphological features such as beaches, estuaries/creeks and mangrove areas in the Andaman Islands. These samples were analysed for textural analysis and geochemical studies to evaluate effects of the tsunami on sediment contamination. The studied sediments, deposited by the 26 December 2004 tsunami in Andaman group of islands, belong to poorly sorted, coarse to medium sands. Generally the concentration of heavy metals in the tsunamigenic surface sediments is mainly in the order of Cu > Mn > Fe > Zn > Pb during the post-tsunami (2005) and Cu > Fe > Mn > Zn > Pb during the post-monsoon (2008). The analysed core samples show that tsunami sediments have been preserved at certain depths from the sampling locations and indicate that they were derived from shallow littoral to neritic depths. The approximate width of deposits deposited by the 26 December 2004 Tsunami in Diglipur and Mayabandar areas (North Andaman) is ~10 cm, in Rangat and Baratang (Middle Andaman) the thickness of the deposits is ~15 cm. In Chidiyatapu, Junglighat, Rutland Islands and Havelock Island (South Andaman) the thickness of the deposits is ~30, ~8, ~25 and ~5 cm, respectively, and in Hut Bay (Little Andaman) the thickness of the deposits is about ~15 cm.
Journal Article
A Geographic Information Systems (GIS)-Based Approach to Derivative Map Production and Visualizing Bedrock Topography within the Town of Rutland, Vermont, USA
Many state and national geological surveys produce map products from surficial and bedrock geologic maps as a value-added deliverable for a variety of stakeholders. Improvements in powerful geostatistical exploratory tools and robust three-dimensional capabilities within geographic information systems (GIS) can facilitate the production of derivative products. In addition to providing access to geostatistical functions, many software packages are also capable of rendering three-dimensional visualizations using spatially distributed point data. A GIS-based approach using ESRI’s® Geostatistical Analyst® was used to create derivative maps depicting surficial overburden, bedrock topography, and potentiometric surface using well data and bedrock exposures. This methodology describes the importance and relevance of creating three-dimensional visualizations in tandem with traditional two-dimensional map products. These 3D products are especially useful for town managers and planners—often unfamiliar with interpreting two-dimensional geologic map products—so they can better visualize and understand the relationships between surficial overburden and potential groundwater resources.
Journal Article
Petrogenetic implications of ophiolitic chromite from Rutland Island, Andaman—a boninitic parentage in supra-subduction setting
Chromites occurring in different modes have been characterized from ophiolites of Rutland Island, a part of Burma-Andaman-Java subduction complex in the Bay of Bengal. Chromite mainly occurs as massive chromitite pods in mantle ultramafic tectonite and as thin massive chromitite bands together with minor disseminations in crustal ultramafic cumulate. Other than pods chromite also appears as: (a) anhedral restitic grains, (b) strings occurring as exsolved phases and as (c) symplectitic intergrowth with orthopyroxene in mantle tectonite. The chromites occurring as massive chromitite pods and bands contain high Cr (Cr#—73 to 80). Restitic chromite grains in mantle ultramafics are high-Mg (Mg#—58), high-Al (Al
2
O
3
—34 wt.%) and intermediate-Cr (Cr#—37) chromites. The bivariant plots of TiO
2
wt.% vs 100Cr#, Mg# vs Cr# and Cr-Al-Fe
3+
ternary discrimination diagram show that the massive and disseminated chromites fall in the boninitic field. The (Al
2
O
3
)
melt
and (FeO/MgO)
melt
values for the massive chromitites are estimated as 10 wt.% to 11 wt.% and 0.67–1.78 respectively, corroborating a boninitic parentage. Massive chromitite on Fe
2+
/Fe
3+
vs Al
2
O
3
wt.% and TiO
2
wt.% vs Al
2
O
3
wt.% plots occupy mainly the field of supra-subduction zone peridotites. High-Mg olivine (Fo
91−93
), high-Mg orthopyroxene (En
∼90
) and high-Cr chromites of Rutland ophiolite are all supportive of boninitic source at supra-subduction zone setting.
57
Fe Mössbauer study of chromite of beach placer shows that chromites occur in partly inverse spinel structure with iron distribution as Fe
3+
(A)Fe
2+
(A)Fe
2+
(B) which might be a result of oxidation. The olivine-spinel geothermometry shows 650–700°C re-equilibration temperature which is much lower than near crystallization temperature (950–1,050°C) derived from orthopyroxene-clinopyroxene assemblage. At supra-subduction setting an oxidizing hydrous fluid derived from subducting slab might have a major influence during the formation of Rutland ophiolite in this part of Burma-Java subduction complex.
Journal Article