Preliminary results on kinematic model of tectonic blocks derived from high precision GPS observations in Southwest China

1997 ◽  
Vol 10 (1) ◽  
pp. 27-34 ◽  
Author(s):  
Li-Ren Huang ◽  
Qing Ma ◽  
Wen-Yao Zhu ◽  
Zong-Yi Cheng ◽  
Yong-Qing Xiong
Keyword(s):  
High Precision ◽  
Southwest China ◽  
Kinematic Model ◽  
Preliminary Results ◽  
Gps Observations

scholarly journals THE BEGINNING OF THE IRON AGE AT ARSLANTEPE: A 14C PERSPECTIVE

Radiocarbon ◽  
2021 ◽  
pp. 1-19
Author(s):  
Federico Manuelli ◽  
Cristiano Vignola ◽  
Fabio Marzaioli ◽  
Isabella Passariello ◽  
Filippo Terrasi
Keyword(s):  
Mass Spectrometry ◽  
Bronze Age ◽  
High Precision ◽  
Iron Age ◽  
Accelerator Mass Spectrometry ◽  
Late Bronze Age ◽  
13Th Century ◽  
Historical Events ◽  
Preliminary Results ◽  
Archaeological Data

ABSTRACT The Iron Age chronology at Arslantepe is the result of the interpretation of Luwian hieroglyphic inscriptions and archaeological data coming from the site and its surrounding region. A new round of investigations of the Iron Age levels has been conducted at the site over the last 10 years. Preliminary results allowed the combination of the archaeological sequence with the historical events that extended from the collapse of the Late Bronze Age empires to the formation and development of the new Iron Age kingdoms. The integration into this picture of a new set of radiocarbon (14C) dates is aimed at establishing a more solid local chronology. High precision 14C dating by accelerator mass spectrometry (AMS) and its correlation with archaeobotanical analysis and stratigraphic data are presented here with the purpose of improving our knowledge of the site’s history and to build a reliable absolute chronology of the Iron Age. The results show that the earliest level of the sequence dates to ca. the mid-13th century BC, implying that the site started developing a new set of relationships with the Levant already before the breakdown of the Hittite empire, entailing important historical implications for the Syro-Anatolian region at the end of the 2nd millennium BC.

Heinrich event 4 and Dansgaard/Oeschger events 5–10 recorded by high-resolution speleothem oxygen isotope data from central China

2014 ◽  
Vol 82 (2) ◽  
pp. 394-404 ◽  
Author(s):  
Houyun Zhou ◽  
Jian-xin Zhao ◽  
Yuexing Feng ◽  
Qiong Chen ◽  
Xiaojian Mi ◽  
...  
Keyword(s):  
High Resolution ◽  
Oxygen Isotope ◽  
High Precision ◽  
High Latitude ◽  
Southwest China ◽  
Asian Summer Monsoon ◽  
Central China ◽  
Temperature Changes ◽  
Heinrich Event ◽  
Asian Summer

AbstractA 50-yr resolution reconstruction of climate and environment variability during the period 43–14 ka was developed using 26 high-precision U/Th dates and 390 oxygen isotope (δ18O) data of a stalagmite (SJ1) collected from Songjia Cave in central China, which is close to the northwestern boundary of the Asian summer monsoon (ASM). The δ18O record in SJ1 displays significant millennial-scale changes that correlate well in timing and duration with Dansgaard/Oeschger (D/O) events 5–10 and Heinrich event 4 (H4) identified in high-latitude regions of the Northern Hemisphere. Four 230Th dates constrain the H4 event precisely to the period of 39.7 to 38.3 ka. Notable centennial variations of the ASM activity could be observed within the H4 event. The magnitude and duration of D/O event 4.1 recorded in SJ1 are similar to those archived in east China but different from those documented in southwest China, suggesting that the manifestation of this event may be regionally different. The timing, duration and structure of D/O events 5–10 and Heinrich event 4 suggest that temperature changes in both hemispheres have exerted significant influences on the ASM variations in central China.

Can gray seals maintain heading within areas of high tidal current? Preliminary results from numerical modeling and GPS observations

2013 ◽  
Vol 30 (1) ◽  
pp. 374-380 ◽  
Author(s):  
Damien Chevaillier ◽  
Mikhail Karpytchev ◽  
Bernie J. Mcconnell ◽  
Simon Moss ◽  
Cecile Vincent
Keyword(s):  
Numerical Modeling ◽  
Tidal Current ◽  
Preliminary Results ◽  
Gps Observations ◽  
Gray Seals

scholarly journals Variations of Radiocarbon in Tree Rings: Southern Hemisphere Offset Preliminary Results

Radiocarbon ◽  
1998 ◽  
Vol 40 (3) ◽  
pp. 1153-1159 ◽  
Author(s):  
F. G. McCormac ◽  
A. G. Hogg ◽  
T. F. G. Higham ◽  
M. G. L. Baillie ◽  
J. G. Palmer ◽  
...  
Keyword(s):  
New Zealand ◽  
Great Britain ◽  
Northern Ireland ◽  
Southern Hemisphere ◽  
High Precision ◽  
Tree Rings ◽  
Precision Measurements ◽  
Preliminary Results ◽  
Queen's University

The Queen's University of Belfast, Northern Ireland and University of Waikato, Hamilton, New Zealand radiocarbon laboratories have undertaken a series of high-precision measurements on decadal samples of dendrochronologically dated oak (Quercus patrea) and cedar (Libocedrus bidwillii) from Great Britain and New Zealand, respectively. The results show a real atmospheric offset of 3.4 ± 0.6% (27.2 ± 4.7 14C yr) between the two locations for the interval ad 1725 to ad 1885, with the Southern Hemisphere being depleted in l4C. This result is less than the value currently used to correct Southern Hemisphere calibrations, possibly indicating a gradient in Δ14C within the Southern Hemisphere.

Kinematic model of crustal deformation of Fenwei basin, China based on GPS observations

2014 ◽  
Vol 75 ◽  
pp. 1-8 ◽  
Author(s):  
Wei Qu ◽  
Zhong Lu ◽  
Qin Zhang ◽  
Zhenhong Li ◽  
Jianbin Peng ◽  
...  
Keyword(s):  
Crustal Deformation ◽  
Kinematic Model ◽  
Gps Observations

scholarly journals High Precision Differential Astrometry in Large Angular Separation Pairs of Radiosources

1994 ◽  
Vol 158 ◽  
pp. 445-447
Author(s):  
J.M. Marcaide ◽  
J.C. Guirado
Keyword(s):  
High Precision ◽  
Angular Separation ◽  
Preliminary Results ◽  
Superluminal Motion

We show preliminary results of three of the four radiosource pairs with angular separations ranging from 0.01° to 6° where we have determined such a separation with a typical fractional precision of 10−8 using phase delays corrected for structural and ionospheric contributions. In the radiosource 4C39.25 we measure a motion with respect to an external radiosource which is compatible with previously reported internal superluminal motion.

FIRST EXPERIMENT TO PRODUCE Λ-HYPERNUCLEI USING ELECTRON BEAM AT JLAB

2003 ◽  
Vol 18 (02n06) ◽  
pp. 112-115 ◽  
Author(s):  
◽  
L. TANG
Keyword(s):  
Electron Beam ◽  
High Precision ◽  
Energy Resolution ◽  
General Technique ◽  
Preliminary Results ◽  
Yield And Quality ◽  
The Future ◽  
Zero Degree ◽  
Spectrometer System ◽  
New Phase

The first experiment producing Λ-hypernuclear spectroscopy using the high-precision electron beam has been carried out at Jefferson Laboratory (JLab). A zero degree tagging technique for the scattered electrons was applied and the hypernuclear spectrometer system (HNSS) was successfully used to measure spectra from the (e, e′ K+) reaction. The best energy resolution obtained thus far in hypernuclear spectroscopy with magnetic spectrometers, near or below 1 MeV, was achieved. This paper describes the general technique of HNSS and the preliminary results for the [Formula: see text] and [Formula: see text] systems. A new phase of experiment on hypernuclear spectroscopy is approved for the future with much higher yield and quality and even better energy resolution.

scholarly journals Preliminary Results of High-Precision Computed Diffusion Weighted Imaging for the Diagnosis of Hepatocellular Carcinoma at 3 Tesla

2018 ◽  
Vol 42 (3) ◽  
pp. 373-379 ◽  
Author(s):  
Motonori Akagi ◽  
Yuko Nakamura ◽  
Toru Higaki ◽  
Yoshiko Matsubara ◽  
Hiroaki Terada ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
High Precision ◽  
Diffusion Weighted Imaging ◽  
3 Tesla ◽  
Preliminary Results ◽  
Diffusion Weighted

scholarly journals Modern displacement of active faults in South-Yakutian coal-bearing depression on the GPS data

2019 ◽  
pp. 63-71
Author(s):  
V. S. Imaev ◽  
L. P. Imaeva ◽  
S. V. Аshurkov ◽  
N. N. Grib ◽  
I. I. Kolodeznikov
Keyword(s):  
Kinematic Model ◽  
Active Faults ◽  
Surface Displacement ◽  
Relative Displacement ◽  
Eurasian Plate ◽  
The North ◽  
Southern Yakutia ◽  
The Difference ◽  
The City ◽  
Gps Observations

For a quantitative assessment of the current horizontal velocity of the surface displacement of the crust in southern Yakutia in recent years, was organized the first and only points of permanent GPS observations in the city of Neryungri (NRG) and the city of Chulman (CHL3). Both points of observation are located within the southern margin of the Eurasian plate, near the system of active structures separating it from the Amur plate. To estimate the relative displacement, the period of joint operation of these two GPS points was chosen, namely from June 29, 2015 to December 1, 2016. The rate of displacement of the point in Neryungri, calculated for a 5-year period (from 27.10.2011 to 01.10.2016), was 21.83±0.73 mm/year in the East-West direction and 12.26±0.25 mm/year in the North-South direction in the international reference basis ITRF2014. The obtained values differ slightly from the theoretical values of the velocity of the Eurasian lithospheric plate at the specified point. The difference of the measured velocities with velocities according to the known kinematic model of the Eurasian plate obtained in this paper is |0.5| mm/year for the Eastern component and |1.0| mm/year for the Northern one and corresponds to the assessment of other authors [Kreemer et al., 2014]. To improve the accuracy of determining the speed of horizontal displacements of the earth's crust at the station CHL3, it is necessary to continue measurements synchronous with the station NRG2.

scholarly journals Eclipsing Binary Stars from Space

2006 ◽  
Vol 2 (S240) ◽  
pp. 624-627
Author(s):  
Hans Bruntt ◽  
John Southworth
Keyword(s):  
Light Curve ◽  
High Precision ◽  
Binary Stars ◽  
Primary Component ◽  
Wide Field ◽  
Small Aperture ◽  
Eclipsing Binary ◽  
Preliminary Results ◽  
Eclipsing Binary Stars

AbstractWe have begun a programme to obtain high-precision photometry of bright detached eclipsing binary (dEB) stars with the Wide-field InfraRed Explorer (WIRE) satellite (Bruntt & Buzasi 2006). Due to the small aperture of WIRE, only stars brighter than V = 6 can be observed. We are collecting data for about a dozen dEB targets and here we present preliminary results for three of them. We have chosen dEBs with primary components of B and early A type. One of our aims is to combine the information from the light curve analyses of the eclipses with asteroseismic information from analysis of the pulsation of the primary component.

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