scholarly journals SPATIAL DISTRIBUTION AND SHOALING BEHAVIOUR OF FISHERY RESOURCES lN THE WATERS OFF WESTERN COAST OF ACEH: PRELIMINARY RESULTS FROM THE POST TSUNAMI EXPEDITION 2OO5

2017 ◽  
Vol 12 (1) ◽  
pp. 15
Author(s):  
Wijopriono Wijopriono ◽  
Mohamad Natsir ◽  
Aril Slotte ◽  
Asep Priatna
Keyword(s):  
Spatial Distribution ◽  
Research Vessel ◽  
Western Coast ◽  
Preliminary Results ◽  
Fishery Resources ◽  
Shoaling Behaviour

Acoustic investigation, which is one of the programmes of the Post Tsunami Expedition, was done in Aceh waters during 24 July to 14 August 2005. Research vessel Bawal Putih I and Baruna Jaya Vlll were used for the survey.

Heat Events in the Indian Subcontinent under a warming climate scenario: Detection and its Drivers 

2021 ◽  
Author(s):  
Ritika Kapoor ◽  
Carmen Alvarez-Castro ◽  
Enrico Scoccimarro ◽  
Stefano Materia ◽  
Silvio Gualdi
Keyword(s):  
North Atlantic ◽  
Heat Waves ◽  
Heat Index ◽  
World Population ◽  
Western Coast ◽  
Positive Correlation ◽  
Preliminary Results ◽  
The North ◽  
The North Atlantic ◽  
Heat Events

<p>Rising global temperatures are a potential cause for increase of extreme climate events, such as heat waves, both in severity and frequency. Under an increasing extreme event scenario, the world population of mid- and low-latitude countries is more vulnerable to heat related mortality and morbidity.</p><p>In India, the events occurred in recent years have made this vulnerability clear, since the numbers of heat-related deaths are on a rise, and heat waves can impact various sectors including health, agriculture, ecosystems and the national economy.</p><p>Preliminary results show the prevalence of heat events in seven different regions of India during the pre-monsoon (March, April, May) and transitional (May, June, July) months. We consider daily maximum temperatures (Tmax) and the NOAA’s Heat Index (HI), a combination of temperature and relative humidity that gives an insight into the discomfort because of increment in humidity.</p><p>We look into various drivers behind the heat events in the seven different clusters, in particular ENSO and the North Atlantic Regimes that have been linked to the generation of heat waves in different parts of India. The preliminary results indicate Nino 3.4 SST anomalies show positive correlation with Tmax anomalies only in the western coast during pre-monsoon season, while in the transitional months positive correlation extends to central and east India. The Tmax composite anomalies for the cold, warm and neutral phases of ENSO show positive anomalies for only warm years and negative anomalies for the cool and neutral years. Heat Index shows similar spatial patterns for correlation analysis and composite anomaly analysis. The Mean Sea Level Pressure (MSLP) composite associated with heat waves (days exceeding 95th percentile=>3 days) show a persistent ridge over the North Atlantic region.</p><p> </p>

A method for visualising polyelectrolyte distribution after polyelectrolyte conditioning of a biotic sludge

2011 ◽  
Vol 63 (6) ◽  
pp. 1303-1308
Author(s):  
Daan Curvers ◽  
Hans Saveyn ◽  
Wim Van den Broeck ◽  
Patrick Van Oostveldt ◽  
Paul Van der Meeren
Keyword(s):  
Spatial Distribution ◽  
Zeta Potential ◽  
Fluorescence Microscopy ◽  
Streaming Potential ◽  
Sludge Dewatering ◽  
Sludge Flocs ◽  
Preliminary Results

Charge neutralisation is an important mechanism in (polyelectrolyte) conditioning of biotic sludges and required for efficient sludge dewatering. Based on results from streaming potential and zeta potential measurements, it has been suggested that charge neutralisation is more complete on the outside of the sludge flocs than on the inside. This paper discusses the development of a technique for assessing the spatial distribution of polyelectrolyte (PE) within sludge flocs. After flocculation with a fluorescently labelled PE, fluorescence microscopy can be used to visualise the distribution of the PE in the sludge flocs. Preliminary results indicate that the PE can penetrate relatively deep into the sludge flocs (and flocculi). Inhomogeneity in the PE distribution arises from differences in exposure to PE in different regions, and from differences in the affinity of the PE for different substances.

scholarly journals CHIRONOMID COMMUNITIES IN THE LITTORAL ZONE ON THE WESTERN COAST OF THE

2007 ◽  
Author(s):  
Lyubov Kravtsova
Keyword(s):  
Spatial Distribution ◽  
Species Diversity ◽  
Littoral Zone ◽  
Western Coast ◽  
Font Size ◽  
Chironomid Larvae ◽  
Baikal Basin ◽  
Shannon’S Index

<strong><span style="font-size: x-small; font-family: TimesNewRoman,Bold;"><span style="font-size: x-small; font-family: TimesNewRoman,Bold;"><p align="left">Abstract</p></span></span></strong><span style="font-size: x-small; font-family: TimesNewRoman;"><span style="font-size: x-small; font-family: TimesNewRoman;"><p align="left">The spatial distribution of chironomid</p><p align="left">communities in the littoral zone (0-20 m) of the</p><p align="left">western coast of the southern Baikal basin is</p><p align="left">investigated. The fauna is composed of 16 species</p><p align="left">and forms of chironomid larvae, comprising 10</p><p align="left">communities. It has been found that the</p><p align="left">communities are characterized by rather poor</p><p align="left">species diversity; Shannon’s index varies from</p><p align="left">0.7 to 2.1 bit. Their distribution is affected by</p><p align="left">hydro-lithodynamic conditions, type of bottom</p><p align="left">sediments and macrophyte development. The</p><p align="left">peak of maximal biomass of chironomid larvae</p><p align="left">on the facies of non-rounded rock debris near</p><p>Berezovy Cape is recorded in spring.</p></span></span>

Seeds of Destruction: Conflagration in the Grain Stores of Dichin

2007 ◽  
Author(s):  
P. GRINTER
Keyword(s):  
Spatial Distribution ◽  
Final Stage ◽  
Research Programme ◽  
Fifth Century ◽  
Preliminary Results ◽  
Weed Seeds ◽  
Grain Stores ◽  
Living Accommodation ◽  
Archaeological Excavations

This chapter reviews the preliminary results and methodology used in the archaeobotanical research programme at Dichin, a multi-period late Roman site in Bulgaria. The remarkable state of preservation of in situ deposits, especially from the destruction level dating to the end of the fifth century, provided an ideal opportunity to integrate fully the process of excavation with the recovery and examination of the seed material in order to research, not just the agricultural economy of the site, but also to reconstruct the spatial distribution of the finds and their association within particular buildings (granaries, store-buildings and living accommodation). Archaeological excavations were carried out at Dichin between 1996 and 2001. The excavations targeted defences, gateways, buildings and a road revealed by remote survey. Many of the buildings within the area were used for storing cereals and pulses. In addition, the lack of weed seeds or processing waste indicates that the crops were all at the final stage of processing and were in storage prior to distribution or use.

scholarly journals Analysis of seasonal variability of hydrological and hydrochemical characteristics of surface waters in the northwestern Black Sea

2020 ◽  
pp. 39-48
Author(s):  
A.A. Valle ◽  
◽  
E.A Grebneva ◽  
A.B. Polonsky ◽  
◽  
...  
Keyword(s):  
Surface Layer ◽  
Spatial Distribution ◽  
Black Sea ◽  
Surface Waters ◽  
Seasonal Variability ◽  
Ph Value ◽  
The Black Sea ◽  
Western Coast ◽  
Hydrochemical Characteristics ◽  
Data Set

Based on the archival data set of the Institute of Natural and Technical Systems from 1955 to 2015 the intra-annual variability of temperature, salinity, dissolved oxygen and PH in the surface layer of the waters of the northwestern shelf of the Black Sea, including the Danube estuary area, is analyzed. The temperature of surface waters on the NW shelf of the Black Sea and the Danube waters differ significantly on a seasonal scale. The Danube waters considerably cool down the surface layer of the estuarine zone during the winter months. Seasonal changes in salinity are associated not only with large seasonal fluctuations in the river flow, precipitation and evaporation, but also with seasonal variability of the wind field. In the autumn period in the spatial distribution there is an increased oxygen content off the coast of Romania, which is related to the prevailing northwestern wind in this region, which leads to the drift of the transformed Danube waters along the western coast. Due to the prevalence of southeastern winds off the Romanian coast, the Danube waters are blocked in the coastal region, which is clearly seen from the spatial distribution of oxygen. The seasonal dynamics of the pH value corresponds to the development of production processes. From winter to summer, an increase in the pH value is noted in both water areas, and then its decrease by autumn. The absolute predominance of the annual harmonic in the seasonal variability of most of the analyzed hydrological and hydrochemical characteristics in most of the examined shelf water area was confirmed. The exception is the salinity in the estuary area of the Danube. The semiannual harmonic describes more than 60% of the total variance due to the seasonal variability of salinity, which is related to the peculiarities of the wind regime in the region.

scholarly journals Demographic challenges and spatial distribution of the population in the Republika Srpska

2014 ◽  
pp. 813-821
Author(s):  
Rajko Vranjes ◽  
Dara Petkovic
Keyword(s):  
Spatial Distribution ◽  
Rural Areas ◽  
Natural Increase ◽  
Economic Effects ◽  
Preliminary Results ◽  
Demographic Challenges ◽  
First Results ◽  
Demographic Processes ◽  
Republika Srpska ◽  
First Time

For the first time in 22 years, an official census of population was carried out on the territory of the Republika Srpska. This is the first time that we have data (preliminary results) based on which we can examine the demographic situation, spatial distribution of the population and certain ongoing demographic processes. Based on the analysis of preliminary results on the total number of enumerated persons and through the analysis of natural increase in migration flows, the article will present the demographic problem faced by the Republika Srpska. The analysis of first results shows that entire regions have low population densities, being affected by depopulation which is caused mainly by negative natural movements and migrations. Rural areas which represented a demographic potential are being depopulated and some of them have no inhabitants at all. The unfavourable spatial distribution, low level of natural regeneration and constant emigration seriously endanger the total number of population in the Republika Srpska, which has been steadily declining ever since 2002. Constant negative socio-economic effects in the short term could jeopardize the development of the population and the very maintenance of infrastructure in settlements in Republika Srpska.

scholarly journals SOME PRELIMINARY RESULTS ON THE DISTRIBUTION OF AFTERSHOCK SEQUENCES IN JAPAN-KURIL ISLANDS AND KAMCHATKA

2017 ◽  
Vol 50 (3) ◽  
pp. 1212
Author(s):  
E.M. Olasoglou ◽  
T.M. Tsapanos ◽  
E.E. Papadimitriou ◽  
G.N. Drakatos
Keyword(s):  
Spatial Distribution ◽  
Main Shock ◽  
Large Earthquake ◽  
Kuril Islands ◽  
Japan Trench ◽  
Omori’S Law ◽  
Preliminary Results ◽  
Seismic Sequences ◽  
Time Period ◽  
Aftershock Sequences

study on the aftershock sequences distributed along the subductions in Japan and Kuril islands, as well as in Kamchatka is undertaken. Aftershock sequences, having a main shock magnitude Mw >7.0, during the time period 1973-2013 are taken into account. The data used (mainshocks, aftershocks and foreshocks if there are any) are restricted in shallow focal depths. A large earthquake in Japan Trench (11 March 2011 / Mw=9.0) occurred and for this reason the investigated area is of particular interest. Our study is concentrated on the spatial distribution of some parameters [Mc, a, b (Gutenberg-Richter distribution) and p, c, k (Omori’s law)] closely associated with the seismic sequences statistics.

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