scholarly journals Reconstructing medieval eroded landscapes of the north-eastern Zuyder Zee (the Netherlands): a refined palaeogeographical time series of the Noordoostpolder between a.d. 1100 and 1400

2020 ◽  
Vol 41 (2) ◽  
pp. 27-56
Author(s):  
Y. T. van Popta ◽  
K. M. Cohen ◽  
P. C. Vos ◽  
Th. Spek
2019 ◽  
Vol 22 (4) ◽  
pp. 567-587 ◽  
Author(s):  
Yftinus T. van Popta

This article focuses on the maritime cultural landscape of the former Zuiderzee (ad 1170–1932) in the central part of the Netherlands. Since the large-scale reclamations from the sea (1932–1968), many remains have been discovered, revealing a submerged and eroded late medieval maritime culture, represented by lost islands, drowned settlements, cultivated lands, shipwrecks, and consequently socio-economic networks. Especially the north-eastern part of the region, known today as the Noordoostpolder, is testimony to the dynamic battles of the Dutch against the water. By examining physical and immaterial datasets from the region, it is possible to give a modern-day idea of this late medieval maritime cultural landscape. Spatial distribution and densities of late medieval archaeological remains are analysed and compared to historical data and remote sensing results. This interdisciplinary approach has led to the discovery of the remains of the drowned settlement of Fenehuysen.


2007 ◽  
Vol 37 (2) ◽  
pp. 219-225 ◽  
Author(s):  
Jo Verhoeven

Hamont is a small town located on the north-eastern edge of the Belgian province of Limburg, on the national border with the Netherlands. It is situated about 30 km south of Eindhoven and 15 km west of Weert in the Netherlands. The town has about 13,500 inhabitants. According to Belemans, Kruijsen & Van Keymeulen (1998), the dialect of Hamont belongs to the West Limburg dialects (subclassification: Dommellands). Limburg dialects occupy a unique position among the Belgian and Dutch dialects in that their prosodic system has a lexical tone distinction, which is traditionally referred to as SLEEPTOON ‘dragging tone’ and STOOTTOON ‘push tone’. In line with recent conventions, stoottoon is referred to as Accent 1 and transcribed as superscript 1; sleeptoon is referred to as Accent 2 and is transcribed as superscript 2 (cf. Schmidt 1986).


2020 ◽  
Author(s):  
Luciana Fenoglio-Marc ◽  
Bernd Uebbing ◽  
Jürgen Kusche ◽  
Salvatore Dinardo

<p>A significant part of the World population lives in the coastal zone, which is affected by coastal sea level rise and extreme events. Our hypothesis is that the most accurate sea level height measurements are derived from the Synthetic Aperture Altimetry (SAR) mode. This study analyses the output of dedicated processing and assesses their impacts on the sea level change of the North-Eastern Atlantic. </p><p>It will be shown that SAR altimetry reduces the minimum usable distance from five to three kilometres when the dedicated coastal retrackers SAMOSA+ and SAMOSA++ are applied to data processed in SAR mode. A similar performance is achieved with altimeter data processed in pseudo low resolution mode (PLRM) when the Spatio-Temporal Altimeter sub-waveform Retracker (STAR) is used. Instead the Adaptive Leading Edge Sub-waveform retracker (TALES) applied to PLRM is less performant. SAR processed altimetry can recover the sea level heights with 4 cm accuracy up to 3-4 km distance to coast. Thanks to the low noise of SAR mode data, the instantaneous SAR and in-situ data have the highest agreement, with the smallest standard deviation of differences and the highest correlation. A co-location of the altimeter data near the tide gauge is the best choice for merging in-situ and altimeter data. The r.m.s. (root mean squared) differences between altimetry and in-situ heights remain large in estuaries and in coastal zone with high tidal regimes, which are still challenging regions. The geophysical parameters derived from CryoSat-2 and Sentinel-3A measurements have similar accuracy, but the different repeat cycle of the two missions locally affects the constructed time-series.</p><p>The impact of these new SAR observations in climate change studies is assessed by evaluating regional and local time series of sea level. At distances to coast smaller than 10 Kilometers the sea level change derived from SAR and LRM data is in good agreement. The long-term sea level variability derived from monthly time-series of LRM altimetry and of land motion-corrected tide gauges agrees within 1 mm/yr for half of in-situ German stations. The long-term sea level variability derived from SAR data show a similar behaviour with increasing length of the time series.</p><p> </p>


2021 ◽  
Author(s):  
P. Nandakishore ◽  
M. Liu ◽  
Prakash R. ◽  
S. Gourneni ◽  
R. Sukumaran ◽  
...  

AbstractObjectiveTo investigate the abrogation of COVID-19 case declines from predicted rates in the US in relationship to viral variants and mutations.DesignEpidemiological prediction and time series study of COVID-19 in the US by State.SettingCommunity testing and sequencing of COVID-19 in the US.ParticipantsTime series US COVID-19 case data from the Johns Hopkins University CSSE database. Time series US Variant and Mutation data from the GISAID database.Main outcome measuresPrimary outcomes were statistical modeling of US state deviations from epidemiological predictions, percentage of COVID-19 variants, percentage of COVID-19 mutations, and reported SARS-CoV-2 infections.ResultsDeviations in epidemiological predictions of COVID-19 case declines in the North Eastern US in March 2021 were highly positively related to percentage of B.1.526 (Iota) lineage (p < 10e − 7) and B.1.526.2 (p < 10 − 8) and the T95I mutation (p < 10e − 9). They were related inversely to B.1.427 and B.1.429 (Epsilon) and there was a trend for association with B.1.1.7 (Alpha) lineage.ConclusionDeviations from accurate predictive models are useful for investigating potential immune escape of COVID-19 variants at the population level. The B.1.526 and B.1.526.2 lineages likely have a high potential for immune escape and should be designated as variants of concern. The T95I mutation which is present in the B.1.526, B.1.526.2, and B.1.617.2 (Delta) lineages in the US warrants further investigation as a mutation of concern.


2021 ◽  
Vol 66 (3) ◽  
Author(s):  
Ekta Pandey

Attempts are made in this paper to investigate the trend of pulses in Eastern Uttar Pradesh, as well as their instability and non-linear model. This time series data on pulses pertains to the period 1980-1981 to 2014-15 and includes information on the area, production, and productivity of pulses. Pulses have had negative growth in terms of area, production, and productivity in all three zones of Eastern Uttar Pradesh, namely, the North Eastern plain zone, the Eastern plain zone, and the Vindhyan zone. Since 1980-81, there has been a rise in the area and output of pulses in the Vindhyan zone, as seen by the percentage change. The Eastern plain zone has the most stable pulse crop in terms of instability


2021 ◽  
Vol 72 (2) ◽  
pp. 119-150
Author(s):  
Melody Pattison

Abstract This research considers the pronunciation of the Standard Dutch vowel /œy/ in the Achterhoek region, where it is typically realised as a monophthong. Previous studies (eg. Kloeke, 1927; Van Reenen, 2005; 2006; Gerritsen and Jansen, 1979) have shown a variable use of [y] and [u] in this area of the Netherlands. However, this research follows on from previous studies by considering the links between rural and non-rural pronunciation, as well as a geographical split between the north and south of the region. During the summer of 2015, 34 Achterhoeks speakers (aged from 26-73) from different towns in the region were recorded completing a picture task and reading sentences designed to elicit marked dialectal pronunciations. F1 and F2 formant frequencies were analysed in Praat (Boersma and Weenink, 2014) and a formant editor developed by Sóskuthy (2014), and then compared in order to arrive at the results. These were then compared with the findings from a 1979 corpus designed by Leendert van Prooije. A system of classifying Dutch vowels into lexical sets (cf. Wells, 1982) was developed in order to more concisely discuss pronunciation differences; under this system, the vowels in question would fall under what has been termed the HUIS vowel.The first result is that variations in the position of the vowel following some rhotics were observed in the speakers. Grouped into age, gender, and location, and measured through normalised formant frequencies, it was found that the more retracted vowel [u] was observed in rural speakers, whereas the fronted vowel [y] was seen in speakers from non-rural areas. Where the vowel appeared in any position other than following the rhotic consonant, it was realised as [y], without any observable differences between speakers. However, further analysis of the FAND II corpus revealed that this effect was not always consistent.In the case of the HUIS vowel, it would appear there is variation based on the status of participants’ locations. The vowel [y] in this area of the Netherlands resulted in a shift from the older [u] of West Germanic dialects (Kloeke, 1927; Van Reenen, 2006), so here the [u] pronunciation after /r/ could be considered a relic of the older dialect of the area. This result was then considered alongside the possibility of a /ru/ isogloss involving more locations within the area of the Achterhoek. Using data from the FAND II database, it was found that there was some evidence for the existence of such an isogloss as a possible alternative explanation.This study therefore presents the conclusion that, based on the HUIS vowel, the style of speakers residing in the north-eastern part of the Achterhoek is likely to be more representative of the traditional dialect. Further exploration of this conclusion could be set up in other aspects of speech, and thus we can consider the implications for the future of the dialect in the southern and western areas.


2002 ◽  
Vol 34 (4) ◽  
pp. 321-325 ◽  
Author(s):  
P. P. G. van den Boom

AbstractA new lichen species, Catillaria nigroisidiata, is described from the Netherlands: it is the first isidiate species known in the genus and has been collected growing on granite on dykes in the north-eastern part of the country. This new species is easily overlooked because of the completely black appearance. A key to Catillaria s.str. in western Europe is provided.


Author(s):  
Piet A. Van Rijn

Since August 2006, the Netherlands has been facing outbreaks of bluetongue (BT) caused by serotype 8 (BTV-8). In this first BT-season about 470 affected holdings were reported in the southern part of the country. It was believed that restrictions to animal movements slowed down the northwards spread of BTV. After a relatively mild winter, BT simultaneously resurfaced in July 2007 at many locations indicating that BTV-8 had survived well. Thousands of affected holdings across the country were reported during that year. After another mild winter, a vaccina­tion campaign for serotype 8 was launched in May 2008, with massive vaccination of sheep, goats and cattle. In 2008, less than 150 outbreaks were reported. The reported BTV-8 cases were in the north-eastern part of the country where the level of natural immunity and the willingness to vaccinate were rela­tively low. This third year with outbreaks was followed by a cold winter. In 2009, no BTV-positive animals were reported from mid-March on. Based on a questionnaire, the willingness of farmers to (re)vaccinate animals tended to decline in 2009, but for cattle farmers this was still at an acceptable level. It is questionable whether farmers will (re)vaccinate again in 2010. Optimism is growing with respect to control, and possibly eradi­cation of BTV-8, but re-emergence after a silent year is a serious possibility. One additional year of vaccination is thus probably required for eradication.  In September 2008, because of the enhanced risk of BTV-1 intro­duction, polymerase chain reaction (PCR) positive results were confirmed for BTV-8\net2006 by sequencing the amplicons of the serogroup-specific PCR test and by serotype-specific PCR testing. BTV-6 was found in infected animals in three different herds, irrespective of vaccination. The sequence of genome seg­ment 10 of this virus is genetically close to BTV-2, whereas other segments are all close to those of the modified-live vaccine for serotype 6. This suggests that BTV-6\net2008 is a reassortant of serotypes 2 and 6. Extensive monitoring and additional cases revealed an unusual epidemiology. No other affected animals were detected, but BTV-6 positive animals on a few additional farms were found. The distance between affected holdings was 30-50 kilometres, and there was no epidemiological link between the affected farms. All BTV-6 positive animals were PCR-negative in March 2009, with no new reports of BTV-6 infection.  In October 2008, a BTV-1 positive bull was officially reported one month after import. In the same herd, four additional PCR-positive animals were found. Three of these also originated from France and were positive for BTV-8. Detailed investiga­tions revealed a French variant of BTV-8 never found in the Netherlands. We concluded that these animals were infected in France and that BTV-8 appeared to evolve differently in dif­ferent regions in Europe. The fifth animal was positive for BTV-6 and was moved from the BTV-6 affected area. Since no other BTV-positive animals were found in the respective herds and in the one-kilometre radius zone, no spread of BTV-1, BTV-6 and BTV-8 seemed to have occurred in this area.  Furthermore, export of Dutch pregnant heifers began again in December 2008, with 2000 to 3000 animals per month. Export is allowed on the basis of vaccination (against serotype 8) before pregnancy and negative PCR testing. Since, no animals were found PCR-positive by the serogroup-specific PCR test, we con­cluded that the Netherlands was free of any BTV circulation in 2009. The situation in 2010 will show whether the Netherlands can be considered as BTV-free again.


2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Caiya Yue ◽  
Yamin Dang ◽  
Changhui Xu ◽  
Shouzhou Gu ◽  
Huayang Dai

Atmospheric pressure loading (APL) deformation is one component of nontectonic deformation for Global Navigation Satellite System (GNSS) time series and is a kind of deformation response caused by a redistribution of atmospheric pressure. In this paper, we present an atmospheric data processing strategy to compute the APL based on a spherical harmonic expansion of the global atmosphere pressure changes. We also provide a sample model to describe the relativity between the global atmosphere pressure changes and APL vertical deformation. The results show that the variation of air mass has a major impact on the north-eastern area of East China, the eastern area of North China, and Northeast China, and the vertical crustal displacement caused by the atmosphere changes in these regions can reach about 20 mm. The correction of APL for vertical time series of GNSS reference stations in different regions indicates that the arid area of the Northwest China, Northeast China, Central China, and North China are greatly affected by APL. While for the station located in Sichuan-Yunnan region, the amplitude and period change are small after correction of APL for vertical time series of GNSS reference stations, which reveals that the area is seriously affected by tectonic movement and water migration loading. The correlation between atmospheric pressure changes and crustal deformation is analyzed, which shows that APL has a serious impact on the north-eastern area of North China, the Northeast China, and the eastern area of Central China when the variations in atmospheric pressure in mainland China are the same. The research results of this paper will provide some reference value for the study of crustal structural deformation and the establishment of geodetic datum.


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