scholarly journals Greater sage-grouseCentrocercus urophasianusmigration links the USA and Canada: a biological basis for international prairie conservation

Oryx ◽  
2011 ◽  
Vol 46 (1) ◽  
pp. 64-68 ◽  
Author(s):  
Jason D. Tack ◽  
David E. Naugle ◽  
John C. Carlson ◽  
Pat J. Fargey
Keyword(s):  
Oil And Gas ◽  
Sage Grouse ◽  
Conservation Areas ◽  
International Partnerships ◽  
North East ◽  
The North ◽  
Human Footprint ◽  
Spatial Composition ◽  
Population Science ◽  
The Usa

AbstractMigratory pathways in North American prairies are critical for sustaining endemic biodiversity. Fragmentation and loss of habitat by an encroaching human footprint has extirpated and severely truncated formerly large movements by prairie wildlife populations. Greater sage-grouseCentrocercus urophasianus, a Near Threatened landscape species requiring vast tracts of intact sagebrushArtemisiaspp., exhibit varied migratory strategies across their range in response to the spatial composition of available habitats. We unexpectedly documented the longest migratory event ever observed in sage-grouse (> 120 km one way) in 2007–2009 while studying demography of a population at the north-east edge of their range. Movements that encompassed 6,687 km2included individuals using distinct spring and summer ranges and then freely intermixing on the winter range in what is probably an obligate, annual event. The fate of greater sage-grouse in Canada is in part dependent on habitat conservation in the USA because this population spans an international border. Expanding agricultural tillage and development of oil and gas fields threaten to sever connectivity for this imperilled population. Science can help delineate high priority conservation areas but the fate of landscapes ultimately depends on international partnerships implementing conservation at scales relevant to prairie wildlife.

Synrift evaporite deposition and structural characterization of the onshore Alagoas subbasin

2019 ◽  
Vol 7 (4) ◽  
pp. SH19-SH31
Author(s):  
Gabriela Salomão Martins ◽  
Webster Ueipass Mohriak ◽  
Nivaldo Destro
Keyword(s):  
Structural Characterization ◽  
Oil And Gas ◽  
Hanging Wall ◽  
Structural Evolution ◽  
Gas Production ◽  
North East ◽  
The North ◽  
Half Graben ◽  
Well Data

The Sergipe-Alagoas Basin, situated in the north-east Brazilian margin, has a long tradition of oil and gas production and the presence and distribution of evaporites play an important role in petroleum systems in the basin. However, little research has focused on the structural evolution of the older, synrift evaporitic sections of the basin. We have focused explicitly in the detailed subsurface structural characterization of the rift in the Alagoas subbasin and the distribution of the Early Aptian evaporites. To accomplish this objective, we interpreted selected 2D and 3D seismic and well data located in two areas known as the Varela Low (VL) and Fazenda Guindaste Low (FGL). We identified diverse deformation styles in those two basin depocenters. Our interpretation indicates that VL consists of a half-graben with a significant rollover structure, controlled by two listric northeast–southwest border faults. The deformation in the hanging wall is also accommodated by release faults and minor antithetic faults. In this depocenter, we mapped in the seismic and the well data an older evaporitic sequence within the Coqueiro Seco Fm., known as Horizonte Salt. This evaporitic section occurs in the internal part of the VL half graben, where it is limited by release and antithetic faults. Significant salt strata growing toward the antithetic fault is observed. Whereas, the FGL represents a graben elongated along the north-east direction and is controlled by several types of structures. We recognized normal synthetic and antithetic faults, transfer zones, release faults, and rollover anticlines in the seismic throughout this depocenter. We mapped an evaporitic section within the Maceió Fm., known as Paripueira Salt, which consists of disconnected salt bodies, restricted to the hanging walls of synrift faults.

EXPLORATION AND GEOLOGY OF THE WEST SULU BASIN, PHILIPPINES

1974 ◽  
Vol 14 (1) ◽  
pp. 21 ◽  
Author(s):  
R. M. Bell ◽  
R. G. C. Jessop
Keyword(s):  
Oil And Gas ◽  
The Philippines ◽  
The West ◽  
Sulu Sea ◽  
North East ◽  
The North ◽  
Tectonic Events ◽  
Provisional Identification ◽  
Western Portion ◽  
Made In

The West Sulu Basin lies in the western portion of the Sulu Sea. Republic of the Philippines. It occupies an area in excess of 26,000 square miles (67,000 km2) and is bounded to the west and south by the cordilleran arc extending from the island of Palawan through Sabah and along the Sulu Archipelago to the island of Mindanao. To the north-east, the basin probably extends beyond the edge of the continental shelf in Philippine territorial waters.The basin may be broadly divided into a western platform and an eastern deep: the latter is subdivided by northeast-trending basement ridges into three sub-basins. Sediments deposited in these sub-basins are of Tertiary to Recent age and have been affected by several orogenies and by contemporaneous movements of fault-controlled blocks. This has resulted in truncation and the development of marked erosion surfaces and onlap within the Upper Tertiary section. Many anticlinal features mapped within the basin have resulted from drape over basement highs or from penecontemporaneous growth of these highs.Major unconformities associated with Upper Tertiary tectonic events have been recognized onshore. Extrapolation to offshore areas where these events can be seismically mapped has enabled an interpretative geologic model to be built up. Provisional identification of stratigraphic units and their nature have been made using this model.The Upper Tertiary section within the eastern deep is expected to consist of deltaic and paralic reservoir sands interbedded with, grading into and transgressed by deeper water shale and mudstone with good hydrocarbon source potential. Some limestone lenses may be present.The presence of Lower to Middle Miocene diapiric shale and Plio-Pleistocene intrusives coupled with data of variable quality makes seismic interpretation difficult in some areas. However, several large anticlinal features and a number of stratigraphic and combination traps have been located.A non-commercial discovery of oil and gas has been made in the basin.

New Forms of Work and Employment in an `Old Industrial Region'? The Offshore Construction Industry in the North East of England

1994 ◽  
Vol 8 (4) ◽  
pp. 531-552 ◽  
Author(s):  
Andy Cumbers
Keyword(s):  
Labour Market ◽  
Construction Industry ◽  
Oil And Gas ◽  
Evolutionary Process ◽  
The Past ◽  
North East ◽  
The North ◽  
Local Labour ◽  
New Forms Of Work ◽  
Work And Employment

This paper examines the nature of the new forms of work and employment brought to the North East of England by the development of offshore construction activities, serving the North Sea's oil and gas industries in the period since the early 1970s. In particular, it assesses the extent to which these activities differ from traditional forms of work and employment organisation within the region. The results of this analysis suggest the need to interpret contemporary patterns of restructuring, both in a particular local labour market context and more generally, as part of an on-going evolutionary process, rather than as a decisive break (or shift) from the past.

Directional Radial Drilling Increases Reservoir Coverage with Precise Wellbore Placement Resulting in a Significant Production Increase from a Thin Reservoir

2021 ◽  
Author(s):  
Ayrat Bashirov ◽  
Ilya Galas ◽  
Marat Nazyrov ◽  
Dmitry Kuznetsov ◽  
Azamat Akkuzhin
Keyword(s):  
Soviet Union ◽  
Oil And Gas ◽  
Sedimentary Cover ◽  
Thick Layer ◽  
Komi Republic ◽  
Carbonate Sediments ◽  
North East ◽  
The North ◽  
Post War ◽  
Radial Drilling

Abstract In many oil and gas provinces not only in Russia, but throughout the world, carbonate strata make up a significant portion of the sedimentary cover, and large accumulations of hydrocarbons are associated with them. However, the purposeful study of them as reservoirs for hydrocarbons in our country practically began only in the post-war years. In the special petrography laboratory carbonate rocks composing various stratigraphic complexes of almost all oil and gas provinces of the Soviet Union were studied, and in particular, Paleozoic carbonate strata of the Timan-Pechora province, Ural-Volga region, Belarus, Kazakhstan, ancient Riphean-Cambrian formations of Yakutia and relatively young strata of the Late Cretaceous of the northeastern Ciscaucasia. Carbonates are widespread sedimentary rocks. A very significant part of them was formed in the conditions of vast shallow-water marine epicontinental basins. A large number of works are devoted to the study of such deposits. However, issues related to the conditions of formation of carbonate sediments and their postsedimentary changes cannot be considered resolved, as well as the classification of the rocks themselves. The analyzed field is the Osvanyurskoye one. It was discovered in 2007. The field is located in the north-east of the European part of the Russian Federation, 2 km from Usinsk in the Komi Republic. The field is a part of the Timano-Pechora oil and gas province and it is a mature field (fig. 1). The objective was a 2.5m thick layer of the Serpukhov horizon.

A Note on the Diet Synaphobranchus Kaupi (Pisces: Synaphobranchidae) from the Porcupine Seabight, North-East Atlantic

1998 ◽  
Vol 78 (4) ◽  
pp. 1385-1388 ◽  
Author(s):  
Afonso Marques
Keyword(s):  
Atlantic Coast ◽  
Abundant Species ◽  
West African ◽  
East Atlantic ◽  
Porcupine Seabight ◽  
Middle Atlantic ◽  
North East ◽  
The North ◽  
Fourth Level ◽  
The Usa

The diet of Synaphobranchus kaupi from the Porcupine Seabight is described. A sample of 110 eel stomachs containing food, were analysed and the general size–depth trend among eels with food in their stomachs. Larger individuals are found in deeper waters. Fish are the main prey for larger eels and crustaceans are preferred by smaller individuals.Synaphobranchus kaupi Johnson, 1862 is a slope dwelling eel, abundant in the north-east Atlantic Ocean from 230 to 2420 m deep on the continental slope (Haedrich & Merrett, 1988). It is the most abundant species on the slopes of the Porcupine Seabight, off south-west Ireland (Merrett et al, 1991; Priede et al., 1994) and was classified as a benthopelagic predator of the fourth level, predator of predators (Saldanha, 1991).The diet of S. kaupi has been described from the slope off the middle Atlantic coast of the USA (Sedberry & Musick, 1978), from the Portuguese slope and in the Bay of Biscay (Saldanha, 1991), from the west African slope (Merrett & Marshall, 1981; Merrett & Domanski, 1985) and from the Rockall Trough (Gordon & Mauchline, 1996).Our specimens were captured during a joint IOS/SAMS survey (Merret et al., 1991). From a total catch of 8792 S. kaupi, captured between 1979 and 1983 in the Porcupine Seabight, ranging from 470 to 2230 m deep, fish stomachs were removed aboard ship and 110 with food were kept in 5% formalin for further analysis.

scholarly journals Identification of gas hydrate on bottom-simulating reflector characteristics with 2D seismic pre-stack time migration of North Bali Waters

2021 ◽  
Vol 944 (1) ◽  
pp. 012004
Author(s):  
I A Sufajar ◽  
H M Manik ◽  
T B Nainggolan ◽  
D Kusnida
Keyword(s):  
Gas Hydrates ◽  
Gas Hydrate ◽  
Oil And Gas ◽  
High Amplitude ◽  
Bottom Simulating Reflector ◽  
Oil And Gas Exploration ◽  
North East ◽  
The North ◽  
Time Migration ◽  
Exploration And Production

Abstract Gas hydrate is a physical compound composed of gas molecules that are formed in a seabed layer characterised by high pressure and low temperature. It is known as one of the alternative non-conventional hydrocarbons besides petroleum and natural gas. One of the identified areas of gas hydrate stability zone is in the North Bali Waters. The North Bali Waters is part of the North East Java Basin, which has oil and gas exploration and production, both conventional and non-conventional. One method of identifying the content of gas hydrates is by looking at the appearance of the Bottom Simulating Reflector (BSR) as shown on the Pre-Stack Time Migrated seismic sections. The detection of gas hydrate zone is determined by the presence of high amplitude, reversed polarity reflection and cross-cut reflection of sedimentary layer. This study aims to determine the existence of a BSR in the waters of North Bali. The procedures for analysing the existence of Bottom Simulating Reflector in this study are pre-processing, processing, and interpretation of 2D marine seismic data. The result shows gas hydrates found with indicated Bottom Simulating Reflector on CDP 35-812 at TWT depth of 1526-1582 ms, characterised by high amplitude-reverse polarity.

2010 environmental update

2011 ◽  
Vol 51 (1) ◽  
pp. 179
Author(s):  
Alastair Sharp-Paul ◽  
Alexandra Hare ◽  
Alice Turnbull ◽  
Tara Halliday
Keyword(s):  
Oil And Gas ◽  
Oil And Gas Industry ◽  
Environmental Research ◽  
Gas Industry ◽  
North West ◽  
The North ◽  
The Usa ◽  
Policy And Suggestion ◽  
High Level ◽  
Gas Fields

Focusing on Australian projects, this paper provides a summary of the key environmental challenges and developments that arose in 2010 and the industry’s response. The paper considers: developments in legislation and the regulatory environment relating to environmental approvals and management; major project approvals and their environmental requirements and implications; key environmental incidents; and reviews new environmental research and management initiatives that were introduced by the industry. A number of states have introduced changes to the way legislation and regulations are interpreted through changes to guidelines and administrative procedures. There has been a general increase in the standard and level of information that regulators expect proponents to provide and while generally these expectations are documented in guidelines and other documents, in some instances there has been a perceived ‘moving of the goal posts’ without clear guidance on what is expected and how the information will be considered once provided. There has been a number of major projects either commencing or gaining environmental approval in 2010. This includes major projects: in Western Australia, on the North West Shelf and in the Timor Sea/Browse Basin; onshore in Queensland in the coal-seam gas fields and continued exploration and development both onshore and offshore around Australia. One of the most significant approvals in 2010 was the Prelude LNG Project–the first approval in Australia of floating LNG technology. Major environmental incidents in 2009 (Montara in Australia and Macondo in the USA) continued to have repercussions in 2010 with the draft government response to the Report of the Montara Commission of Inquiry released in November. These incidents have put the oil and gas industry under the spotlight and this paper looks at some of the statistics on the frequency and severity of environmental incidents, albeit at a high level. Finally, the industry has continued to implement a number of environmentally related initiatives both in response to government policy and suggestion and independently through groups such as the APPEA environment committee.

Evaluation of collection flax accessions for resistance to fusarium wilt and anthracnose in the North-East of Ukraine

2018 ◽  
pp. 43-53
Author(s):  
O.Yu. Yotka ◽  
V.I. Chuchvaha ◽  
L.M. Kryvosheieva
Keyword(s):  
Fusarium Wilt ◽  
Unknown Origin ◽  
Sources Of Resistance ◽  
Fiber Flax ◽  
Breeding Material ◽  
North East ◽  
The North ◽  
Medium Resistance ◽  
The Usa ◽  
The Republic

Goal. To evaluate collection flax accessions of the Institute of Bast Crops for resistance to Fusarium wilt and anthracnose in the North-east Ukraine, to identify, on the basis of screening, varieties with medium and high resistance to pathogens and to create new initial breeding material on artificial infections. Materials and methods. The study was carried out in the infectious-provocative nursery in the field of the Institute of Bast Crops in compliance with the "Methodical guidelines for the phytopathological evaluation of resistance of breeding material of fiber flax to Fusarium wilt" and " Methodological instructions on the phytopathological evaluation of resistance of fiber flax to diseases" in 2011 ­ 2016. Results and discussion. In 2011-2016, 115 accessions of the Ukrainian national flax collection from 15 countries were evaluated for resistance to Fusarium wilt and anthracnose in the infectious nursery: 31 accessions from Ukraine; 26 – from Belarus; 15 - from France; 8 - from Russia; 8 - from Poland; 6 - from the USA; 4 - from Lithuania; 4 - from the Czech Republic; 4 – from Argentina; 3 - from the Netherlands; 1 accession from Belgium; 1 - from Germany; 1 - from Kenya; 1 - from Morocco; 1 from Canada; and 1 accession of unknown origin. Varieties were assessed for resistance to disease in comparison with reference varieties. There were 8 Fusarium-resistant and 3 Colletotrichum-resistant accessions. Most of the varieties under investigation were medium resistant to Fusarium wilt (59.1%) and susceptible to anthracnose (82.6 %). Conclusions. As a result of the research into resistance of the collection material to Fusarium wilt and anthracnose in the infectious nursery, sources of resistance to diseases were identified: ACM Duff (UF0402149) from Canada, Atena (UF0401927) from Poland, LKS 2 (UF0402112), LKS 10 (UF0402101), LKS 11 (UF0402102), LKS 12 (UF0402196), LKS 14 (UF0402194), LKS 15 (UF0402198) from Ukraine - to Fusarium wilt; LKS 1 (UF0402111), LKS 11 (UF0402102) from Ukraine, Fort (UF0401942) from the Republic of Belarus - to anthracnose. Ukrainian fiber flax accessions combining resistance to two diseases: LKS 11 (resistance to Fusarium wilt and anthracnose), LKS 2, LKS 10, LKS 12, LKS 14, and LKS 15 (resistance to Fusarium wilt and medium resistance to anthracnose), LKS 1 (medium resistance to Fusarim wilt and resistance to anthracnose) were singled out.

First record of Caryophyllia smithii in the central southern North Sea: artificial reefs affect range extensions of sessile benthic species

2015 ◽  
Vol 8 ◽  
Author(s):  
Joop W.P. Coolen ◽  
Wouter Lengkeek ◽  
Gareth Lewis ◽  
Oscar G. Bos ◽  
Lodewijk Van Walraven ◽  
...  
Keyword(s):  
North Sea ◽  
Oil And Gas ◽  
First Record ◽  
Stepping Stones ◽  
Orkney Islands ◽  
Southern North Sea ◽  
North East ◽  
The North ◽  
The North Sea ◽  
Hard Substrata

In the North Sea, observations of the solitary coralCaryophyllia smithiiare mostly limited to the north-east coast of the United Kingdom including the Shetland and Orkney islands. To date,C. smithiihas not been reported from far offshore locations in the North Sea south of 57.7°N. Distribution of this species appears limited by the restricted availability of natural hard substrata in the central southern North Sea. There are, however, many artificial hard substrata in this area in the form of shipwrecks and offshore oil and gas installations. These may provide stepping stones forC. smithiito expand its distribution. Here we report the first sighting ofC. smithiiin the central southern North Sea on an unidentified wreck on the Dogger Bank. This is the first offshore observation of any hard coral in the central southern North Sea.

Transplant experiment to evaluate the feeding behaviour of the Atlantic ribbed mussel, Geukensia demissa, moved to a high inorganic seston area

2015 ◽  
Vol 66 (3) ◽  
pp. 220 ◽  
Author(s):  
E. Galimany ◽  
J. M. Rose ◽  
M. S. Dixon ◽  
G. H. Wikfors
Keyword(s):  
Environmental Remediation ◽  
Atlantic Coast ◽  
Absorption Efficiency ◽  
Feeding Strategies ◽  
Transplant Experiment ◽  
North East ◽  
The North ◽  
The Usa ◽  
Ribbed Mussels ◽  
Ribbed Mussel

In 2011–12, a field study demonstrated that ribbed mussels from two locations in the north-east Atlantic Coast of the USA used different feeding strategies to adapt to widely differing seston characteristics and achieve the same absorption efficiency. To investigate whether there was local, genetic adaptation of mussels in the two contrasting sites, we conducted a transplant experiment in 2012 in which mussels were moved from the high-plankton, low-inorganic waters of Milford Harbor, CT, to the high-inorganic, low-plankton waters of Hunts Point, Bronx, NY. Results showed that mussels from Milford adapted to the new, poorer-quality seston within 6 days of submersion in Hunts Point waters, which indicates that phenotypic plasticity in the species is sufficient to account for adaptability of the ribbed mussel to Hunts Point conditions. This adaptability makes the ribbed mussel a good candidate for environmental remediation technologies, such as nutrient bioextraction.

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