Hindcast of sediment flow along the Curonian Spit under different wave climates

2012 ◽  
Author(s):  
M. Viska ◽  
T. Soomere
Keyword(s):  
Curonian Spit ◽  
Sediment Flow

First record of the parasitic louse fly Ornithomya comosa (Diptera: Hippoboscidae) in Europe and western Russia

2019 ◽  
Vol 28 (2) ◽  
pp. 356-359
Author(s):  
E.P. Nartshuk ◽  
A.V. Matyukhin ◽  
A.P. Shapoval
Keyword(s):  
West Siberia ◽  
First Record ◽  
Peninsular Malaysia ◽  
Hirundo Rustica ◽  
Palaearctic Region ◽  
Curonian Spit ◽  
Oriental Region ◽  
Delichon Urbica ◽  
First Time

The parasitic louse fly Ornithomya comosa (Austen, 1930) (Diptera, Hippoboscidae), known from the Oriental Region (India, Thailand, Nepal and Peninsular Malaysia) and Asian part of the Palaearctic Region (Kazakhstan, Kyrgyzstan, West Siberia of Russia and Japan), is found for the first time in Europe and in the western part of Russia (Curonian Spit). Flies were collected from the swallow species Hirundo rustica (Linnaeus, 1758) and Delichon urbica (Linnaeus, 1758) (Hirundinidae). Two possible narratives for the occurrence of this fly in Europe are discussed.

scholarly journals Distinguishing characteristics of Diamictons at the Margin of the Matanuska Glacier, Alaska

1981 ◽  
Vol 2 ◽  
pp. 78-84 ◽  
Author(s):  
Daniel E. Lawson
Keyword(s):  
Grain Size ◽  
Size Distribution ◽  
Internal Structure ◽  
Grain Size Distribution ◽  
Source Material ◽  
Basal Ice ◽  
Gravel Size ◽  
Sediment Flow ◽  
Matanuska Glacier ◽  
Stratigraphic Sequences

The origins of diamictons deposited at the Matanuska Glacier are identified in stratigraphic sequences mainly by the presence or absence of a pebble fabric, internal structure, and variation in gravel-size clast distribution. These properties correlate with major differences in depositional mechanisms and source material. Melt-out till mostly inherits fabric, internal structure, and grain-size distribution from its debris-laden basal ice source. Sediment flow deposits and ice-slope colluvium (deposited by ablational slope processes) have properties developed by resedimentation mechanisms. Melt-out till ranges from structureless to stratified with interspersed lenses and discontinuous laminae, and generally possesses a well-defined pebble fabric. Sediment flow deposits show various combinations of six sedimentologic units with distinct sedimentary features and clast dispersion. Pebble fabric is absent or poorly defined, depending upon the unit's origin. Ice-slope colluvium is usually featureless, except for randomly-dispersed laminated lenses and irregularly-shaped gravelly zones in an otherwise disarrayed assemblage of particles, and is without a pebble fabric.

scholarly journals THE PROBLEM OF LAND MANAGEMENT TRADITIONS IN THE CURONIAN SPIT

2007 ◽  
Vol 31 (3) ◽  
pp. 140-148
Author(s):  
Jurgis Bučas
Keyword(s):  
Cultural Landscape ◽  
Wind Erosion ◽  
18Th Century ◽  
Curonian Lagoon ◽  
Master Plan ◽  
Curonian Spit ◽  
Ecological Awareness ◽  
World Heritage List ◽  
History Of ◽  
The 19Th Century

The Curonian Spit was inhabited six thousand years ago. During this period its survival was menaced by natural forces. The 17th–18th centuries faced unreasonable deforestation of the Curonian Spit and opened its dunes to wind erosion. In the 18th century 14 settlements were hid under moving sand. The Spit survival was in danger of being flown under the Curonian Lagoon waters. At the begining of the 19th century radical actions were taken to save the Curonian Spit damaged by wind erosion. Tremendous ecological awareness of some natural powers as wind and flora helped man to create a landscape which was described at UNESCO General Conference as a worldwide worth cultural heritage and enrolled in the World Heritage List as a cultural landscape of universal worth illustrating the history of dramatic coexistence of nature and man. The paper describes the Curonian Spit as a cultural landscape, its historical formation and present managment, discusses its creation and management traditions and evaluates them while preparing the Curonian Spit National Park managment plan as well as the Master Plan of Neringa city. Gamtosauginė direktyva ar kraštotvarkinės tradicijos ? Santrauka Kuršių nerijoje žmonės įsikūrė ketvirtajame tūkstantmetyje prieš Kristų. Visą istorinį laikotarpį pusiasaliui grėsmę kėlė gamtos jėgos. XVI-XVIII a. neapgalvotas nerijos miškų naikinimas atidengė pusiasalio smėlynus vėjo erozijai. XVIII a. smėliu užpustyta 14 gyvenviečių. Kilo grėsmė, kad ir pats pusiasalis bus nupustytas į Kuršių marias. Pasitinkant XIX a., imtasi radikalių priemonių gelbėti vėjo erozijos naikinamą Kuršių neriją. Su didžiule ekologine išmintimi panaudodamas pačios gamtos jėgą (vėją) ir medžiagą (augalus), per XIX a. supustyto jūros smėlio kopose žmogus sukūrė kraštovaizdį, kuris UNESCO Generalinės konferencijos buvo įvardytas pasaulio reikšmės nekilnojamojo kultūros paveldo vertybe ir įrašytas į Pasaulio paveldo sąrašą kaip universalios reikšmės kultūrinis kraštovaizdis, iliustruojantis gamtos ir žmogaus dramatiško sambūvio istoriją. Nagrinėjama Kuršių nerijos kultūrinio kraštovaizdžio istorinio formavimo ir dabartinio jo tvarkymo veikla, aptariamos jo kūrimo bei priežiūros tradicijos ir kaip jos vertinimos rengiant Kuršių nerijos nacionalinio parko tvarkymo planą bei Neringos miesto savivaldybės bendrąjį planą.

scholarly journals Presence of microcystins in the littoral zone of the Curonian Lagoon by the data of immunochromatographic analysis in 2017

2019 ◽  
Vol 4 (1) ◽  
pp. 109-111
Author(s):  
M. M. Smirnova
Keyword(s):  
Water Samples ◽  
Littoral Zone ◽  
Health Hazard ◽  
Curonian Lagoon ◽  
Curonian Spit ◽  
Potential Health ◽  
Potential Health Hazard ◽  
Inherent Problem ◽  
Strip Test ◽  
First Time

The presence of hepatotoxic cyanotoxins of microcystin group has been recorded in the southern part of the Curonian Lagoon annually since 2010. Because of unique natural features and cultural heritage, the Curonian Spit and the Curonian Lagoon are involved into diverse recreational usage. The potential health hazard due to microcystins is, thus, an inherent problem of the area. Rapid immunochromatographic semi-quantitative test (Microcystin Strip Test, Abraxis Ltd) was applied for the detection of microcystins in water samples from littoral zone. Samples were collected twice per month in May – November 2017 at six monitoring sites around the Lagoon. For the first time, the presence of toxic metabolites of cyanobacteria (microcystins) in the whole littoral of the southern part of the Curonian Lagoon during vegetation season was established. As previously noted, microcystins were present in water samples in summer and autumn. During May it were not found. The highest values (5–10 µg per litre) were recorded in the late June and during September at the Curonian Spit. These values were rather low in comparison with those of 2011–2016. From mid-to-late October toxins were recorded twice only, at the Curonian Spit. At the eastern and southern coasts maximal value was 5 µg per litre (once at the end of September). In other samples toxins were not detected or their values did not exceed 2.5 µg per litre.

scholarly journals Sediment and Cavitation Erosion Studies through Dam Tunnels

2016 ◽  
Vol 2016 ◽  
pp. 1-7
Author(s):  
Muhammad Abid ◽  
Jamal Saeed ◽  
Hafiz Abdul Wajid
Keyword(s):  
Flow Field ◽  
Flow Rate ◽  
Erosion Rate ◽  
Cavitation Erosion ◽  
Critical Value ◽  
Sudden Increase ◽  
Sediment Erosion ◽  
Sediment Flow ◽  
Particulate Mass ◽  
Tarbela Dam

This paper presents results of sediment and cavitation erosion through Tunnel 2 and Tunnel 3 of Tarbela Dam in Pakistan. Main bend and main branch of Tunnel 2 and outlet 1 and outlet 3 of Tunnel 3 are concluded to be critical for cavitation and sediment erosion. Studies are also performed for increased sediments flow rate, concluding 5 kg/sec as the critical value for sudden increase in erosion rate density. Erosion rate is concluded to be the function of sediment flow rate and head condition. Particulate mass presently observed is reasonably low, hence presently not affecting the velocity and the flow field.

Chewing Lice (Insecta: Phthiraptera) from Migratory Birds of the Curonian Spit

2018 ◽  
Vol 98 (4) ◽  
pp. 420-433
Author(s):  
O. D. Malysheva ◽  
O. O. Tolstenkov
Keyword(s):  
Migratory Birds ◽  
Curonian Spit ◽  
Chewing Lice

scholarly journals Tidal, wave, current and sediment flow patterns in wet season in the estuary of Porong River Sidoarjo, Indonesia

2018 ◽  
Vol 177 ◽  
pp. 01016
Author(s):  
A. Kisnarti Engki ◽  
Dj. Prasita Viv
Keyword(s):  
Flow Patterns ◽  
Current Data ◽  
Tidal Wave ◽  
Physical Oceanography ◽  
Sediment Thickness ◽  
Wet Season ◽  
The West ◽  
Tidal Current Velocity ◽  
Tidal Data ◽  
Sediment Flow

The objectives of this research are to analyze characteristics of physical oceanography, such as : tides, waves, currents, and discharges at Muara Kali Porong. This research also discuss sediment flow patterns and morphology in around the Estuary of Porong River. Tidal data were used as correction to the depth. The calculation to determine the tidal current velocity and wind data along with current data are used for simulation model. Sedimentation process with a simulation of 15 days in the West Season occured in the Northeast of Lusi Island with sediment thickness ranged from 1.6 to 2.6 m.

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