scholarly journals Sedimentary facies and architecture of the Holocene to Recent Rømø barrier island in the Danish Wadden Sea

2008 ◽  
Vol 15 ◽  
pp. 49-52 ◽  
Author(s):  
Peter N. Johannessen ◽  
Lars Henrik Nielsen ◽  
Lars Nielsen ◽  
Ingelise Møller ◽  
Morten Pejrup ◽  
...  
Keyword(s):  
Multidisciplinary Approach ◽  
Wadden Sea ◽  
Sediment Cores ◽  
Barrier Island ◽  
Sedimentary Facies ◽  
Facies Model ◽  
Multidisciplinary Study ◽  
Sedimentary Architecture ◽  
Ground Penetrating ◽  
The University

This paper describes an ongoing multidisciplinary study on the development of the barrier islands in the Danish Wadden Sea (Vadehavet), carried out by the Department of Geography and Geology at the University of Copenhagen and the Geolo gical Survey of Denmark and Greenland (GEUS). Nine sediment cores each c. 25 m long and a total of c. 45 km ground penetrating radar (GPR) profiles have been acquired on the islands of Rømø and Fanø. Geochemical and palaeontological analyses and dating of 150 core samples using optically stimulated luminescence (OSL) are in progress. This multidisciplinary approach has given new insights into the sedimentary architecture and development of the island, and the study is expected to result in a new detailed facies model. Such models are essential for an assessment of the effects of rising sea level associated with global warming. The new facies model can also be used as an analogue for subsurface oil or water reservoirs in similar sedimentary settings. This article presents selected core and GPR data from the Rømø barrier island.

Integrating ground-penetrating radar and borehole data from a Wadden Sea barrier island

2009 ◽  
Vol 68 (1) ◽  
pp. 47-59 ◽  
Author(s):  
L. Nielsen ◽  
I. Møller ◽  
L.H. Nielsen ◽  
P.N. Johannessen ◽  
M. Pejrup ◽  
...  
Keyword(s):  
Ground Penetrating Radar ◽  
Wadden Sea ◽  
Barrier Island ◽  
Borehole Data ◽  
Ground Penetrating

scholarly journals Obsidian and Obsidian-like Glass Tesserae: A Multidisciplinary Approach to Study the Dedication Wall Mosaic in the Church of St. Mary of the Admiral in Palermo (12th Century)

2020 ◽  
Vol 6 (1) ◽  
pp. 403-416
Author(s):  
Valentina Cantone ◽  
Rita Deiana ◽  
Alberta Silvestri ◽  
Ivana Angelini
Keyword(s):  
Multidisciplinary Approach ◽  
Multispectral Imaging ◽  
Volcanic Glass ◽  
Research Topic ◽  
Multidisciplinary Study ◽  
12Th Century ◽  
Challenging Research ◽  
Byzantine Period ◽  
Dark Glass ◽  
The Church

AbstractPliny the Elder testifies that roman workshops used volcanic glass (obsidian), but also produced and used a dark glass (obsidian-like glass) quite similar to the natural one. In the context of the study on medieval mosaics, the use of the obsidian and obsidian-like tesserae is a challenging research topic. In this paper, we present the results of a multidisciplinary study carried out on the Dedication wall mosaic, realized by a byzantine workshop in the 12th century in the Church of St. Mary of the Admiral in Palermo, and where numerous black-appearing tesserae, supposed to be composed of obsidian by naked-eyes observation, are present. Historical documents, multispectral imaging of the wall mosaic, and some analytical methods (SEM-EDS and XRPD) applied to a sample of black tesserae, concur in identifying here the presence of obsidian and different obsidian-like glass tesserae. This evidence, although related to the apparent tampering and restoration, could open a new scenario in the use of obsidian and obsidian-like glass tesserae during the Byzantine period in Sicily and in the reconstruction of multiple restoration phases carried out between 12th and 20th century AD on the mosaics of St. Mary of the Admiral.

scholarly journals Characteristic of Shallow Subsurface Quaternary Sediment in Nongsa Isle, Part of Putri Islands, Batam, Based on Georadar Data Interpretation

2019 ◽  
Vol 34 (2) ◽  
Author(s):  
Undang Hernawan ◽  
Nineu Yayu Geurhaneu ◽  
Muhammad Zulfikar
Keyword(s):  
Sedimentary Facies ◽  
Data Interpretation ◽  
High Amplitude ◽  
Spatial Filter ◽  
Geological Condition ◽  
Depositional Facies ◽  
Shallow Subsurface ◽  
Equipment Type ◽  
Ground Penetrating ◽  
Radar Facies

Nongsa Isle belongs to Putri Islands in Batam, is the outermost island that need to be protected either from natural hazards and anthropogenic factor. Therefore, this study was conducted by performing Ground Penetrating Radar analysis, in order to understand the geological condition particularly sedimentology and its process. We used Sirveyor 20 GPR equipment type with MLF antenna frequency 40 Mhz and Radan 5 as processing software, which include time zero correction, spatial filter, deconvolution, migration and adjustment of amplitude and signal gain. Data interpretation was conducted based on radar facies methodology that describes georadar image/radargram. The study result showed differences of sedimentary facies based on three differences of radar facies units, with the first layer (unit 1) is the youngest unit has thicknesses ranging from 3.5 – 5 m that characterized by parallel, strong reflector, high amplitude and continuous reflector configurations, unit 2 from 5 – 11 meter of depth, indicates parallel reflector pattern with medium-high amplitude and continuous, and unit 3 which is the oldest unit with thickness until penetration limit (11 – 20 m), characterized by a configuration of sub parallel – hummocky reflectors that are undulating, low-medium amplitude reflectors. Based on radar facies characteristics such as reflector configuration, reflection amplitude, and reflection continuity, the differencies of depositional facies are changes from fluvial – coastal plain.

Model Track Studies by Ground Penetrating Radar (GPR) on Ballast With Different Fouling and Geotechnical Properties

2015 ◽  
Author(s):  
Hamed Faghihi Kashani ◽  
Carlton L. Ho ◽  
Charles P. Oden ◽  
Stanley S. Smith
Keyword(s):  
Ground Penetrating Radar ◽  
Large Scale ◽  
Empirical Studies ◽  
Geotechnical Properties ◽  
Maintenance Cost ◽  
Non Invasive ◽  
Section Area ◽  
University Of Massachusetts ◽  
Ground Penetrating ◽  
The University

In recent years there has been an increase in the knowledge of, and need for, non-invasive monitoring of ballast in order to identify the problematic sections of track and decrease the maintenance cost. Various technologies such as Ground Penetrating Radar (GPR) are becoming accepted for investigating the condition of ballast. However since these techniques were not originally developed for engineering applications, their applicability in ballast evaluations can be sometimes uncertain. Continued empirical studies and condition specific calibrations are needed to demonstrate repeatable and quantifiable results. In this study large-scale track models with trapezoidal section area were constructed at the University of Massachusetts to investigate the effects of breakdown fouling, and the effects of changing geotechnical properties on GPR traces. This paper presents the design and construction of large scale track models, and methods used for GPR data collection. GPR data are presented in this paper that demonstrate sensitivity to the track model properties and variables. In particular, the experiments are being used to evaluate changes in GPR data with changing geotechnical properties of the ballast such as density, water content, grain size distribution (GSD), and fouling percentage.

Luminescence dating of Holocene sedimentary deposits on Rømø, a barrier island in the Wadden Sea, Denmark

The Holocene ◽  
2010 ◽  
Vol 20 (8) ◽  
pp. 1247-1256 ◽  
Author(s):  
A.T. Madsen ◽  
A.S. Murray ◽  
T.J. Andersen ◽  
M. Pejrup
Keyword(s):  
Wadden Sea ◽  
Barrier Island ◽  
Luminescence Dating ◽  
Sedimentary Deposits

Cardiology consultation in oncology practice: a 5-year survey

2020 ◽  
Vol 50 (12) ◽  
pp. 1419-1425
Author(s):  
Kazuko Tajiri ◽  
Ikuo Sekine ◽  
Hiroyuki Naito ◽  
Momoko Murata ◽  
Siqi Li ◽  
...  
Keyword(s):  
Heart Failure ◽  
Atrial Fibrillation ◽  
Venous Thromboembolism ◽  
Cancer Treatment ◽  
Multidisciplinary Approach ◽  
Long Term Outcomes ◽  
Oncology Practice ◽  
The University

Abstract Objective Onco-cardiology services are expanding rapidly in Japan. To provide a better service, it is important to consider the needs of oncologists. However, little is known regarding specific needs for which oncologists should consult cardiologists to manage cardiovascular problems of their patients. We analysed cardiology consultations sought by oncologists to evaluate the role of cardiologists in cancer treatment. Method We retrospectively investigated consecutive 2064 cardiology consultations of cancer patients in the University of Tsukuba Hospital, Tsukuba, Japan, between January 2014 and December 2018. Results The most common timing of cardiology consultation was before the commencement of cancer treatment (n = 1355; 65.7%), followed by after the commencement of cancer treatment (n = 686; 33.2%). Among the 361 consultations before the administration of anticancer drugs, 235 (65.1%) were for anthracycline-based regimens. There were 506 (24.5%) consultations for the management of cardiovascular emergencies developing after the commencement of cancer treatment; venous thromboembolism was the most frequent (n = 125; 24.7%), followed by atrial fibrillation (n = 110; 21.7%) and heart failure (n = 74; 14.6%). There were marked differences in the types of cardiovascular emergencies depending on the type of cancer. Conclusions This survey revealed the various cardiovascular problems for which oncologists sought interventions by cardiologists. A multidisciplinary approach in an onco-cardiology service is essential to achieve optimal long-term outcomes.

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