Field Observations and Modelling of the Self-Burial of a North West Shelf Pipeline

2003 ◽  
Author(s):  
Rodney Pinna ◽  
Andrew Weatherald ◽  
John Grulich ◽  
Beverley F. Ronalds
Keyword(s):  
Internal Waves ◽  
The Self ◽  
Field Observations ◽  
North West ◽  
The North ◽  
Hydrocarbon Fluid ◽  
Key Driver

The Goodwyn Interfield Pipeline was laid on the Australian North West Shelf, connecting the Goodwyn and North Rankin platforms, in 1993. It is operated by Woodside Energy Limited, and is used to transport hydrocarbon fluid from the Goodwyn and Echo/Yodel fields to the North Rankin A platform, which is connect to onshore processing facilities by the 140 km North Rankin trunkline. This pipeline was expected to self-bury along the majority of its length. After nine years however, some sections of the pipeline have experienced significant self-burial, however, other sections remain exposed. The first part of this paper details the results collected from annual surveys of the pipeline, while the second part looks at modelling the self-burial process. The effect of internal waves is found to be a key driver in the self-burial process.

Self-reported confidence and experience of dentists entering oral and maxillofacial dental core training

2021 ◽  
Vol 12 (1) ◽  
pp. 14-19
Author(s):  
Awais Ali
Keyword(s):  
Maxillofacial Surgery ◽  
Continuing Professional Development ◽  
The Self ◽  
Oral And Maxillofacial Surgery ◽  
Microsoft Excel ◽  
North West ◽  
Confidence Levels ◽  
The North ◽  
West Region ◽  
Core Training

Introduction The aim of this study was to explore the experience and self-reported confidence of UK dentists before starting dental core training (DCT) roles in oral and maxillofacial surgery (OMFS). Methods An anonymous electronic voluntary questionnaire was distributed to all foundation dentists in the North West region. The survey was open to participants for two months, from August to September 2019. The data were analysed using Google Forms and Microsoft Excel®. Results A total of 20 respondents completed the survey. Participants reported some experience and exposure in OMFS in 85% of responses. Three-quarters (75%) of those surveyed were either ‘not very confident’ or ‘not confident at all’ about the upcoming role. All participants stated they would benefit from attending specific continuing professional development events or study days focusing on transitioning to an OMFS job in a hospital. Conclusions The self-reported confidence levels of North West dentists in performing general duties and practical elements of OMFS are low. Further targetted training is advised for DCTs who are transitioning from a dental to an OMFS role.

Satellite observations of internal waves on the Australian north-west shelf

1981 ◽  
Vol 32 (3) ◽  
pp. 457 ◽  
Author(s):  
PG Baines
Keyword(s):  
New Zealand ◽  
Internal Waves ◽  
Wave Packets ◽  
Satellite Observations ◽  
North West ◽  
The North ◽  
Continental Shelves

This paper describes the results of a search of the existing Landsat (1 and 2) imagery catalogue for tidally generated internal waves over the continental shelves of Australia and New Zealand. The only area where such waves were observed was the Australian north-west shelf where they were found in abundance from the North West Cape to the latitude of Darwin. Wavelengths were in the range 300-1000 m with typical speeds of 0.5-1 m s-1, and spacing between wave packets of 25 km.

Sedimentology of the Ghazij Formation, Harnai, Baluchistan

1968 ◽  
Vol 105 (1) ◽  
pp. 35-45 ◽  
Author(s):  
A. Kazi
Keyword(s):  
Source Area ◽  
Field Observations ◽  
North West ◽  
The North ◽  
Principal Source ◽  
Petrographic Study

SUMMARYA petrographic study of the sediments of Ghazij Formation, supplemented by field observations, has been made with a view to studying the environment of sedimentation in the Ghazij Basin. It is concluded that the sediments were formed in marine and fluviatile environments. The principal source area lay to the north-west of Harnai and a palaeogeographic reconstruction of Ghazij times is attempted.

scholarly journals Exceedance frequency of appearance of extreme internal waves in the World Ocean

2018 ◽  
Author(s):  
Tatyana Talipova ◽  
Efim Pelinovsky ◽  
Oxana Kurkina ◽  
Ayrat Giniyatullin ◽  
Andrey Kurkin
Keyword(s):  
Internal Waves ◽  
World Ocean ◽  
The Yellow Sea ◽  
Exceedance Probability ◽  
Extreme Statistics ◽  
North West ◽  
Statistical Estimates ◽  
The North ◽  
The World ◽  
Egyptian Coast

Abstract. Statistical estimates of internal wave appearance in different regions of the World Ocean are discussed. It is found that the observed exceedance probability of large-amplitude internal waves in most cases can be described by the Poisson curve, which is one of the typical curves of extreme statistics. Detailed analysis is done for the internal waves in the several areas of the World Ocean: tropical part of the Atlantic Ocean, the North-West shelf of Australia, the Mediterranean Sea near the Egyptian Coast and the Yellow Sea.

SEM and TEM observations of sperm development in the testis of the freshwater fish Oreochromis mossambicus

1990 ◽  
Vol 48 (3) ◽  
pp. 58-59
Author(s):  
Daryl A. Cornish ◽  
George L. Smit
Keyword(s):  
Morphological Characteristics ◽  
Oreochromis Mossambicus ◽  
Breeding Cycle ◽  
Limited Information ◽  
North West ◽  
The North ◽  
Sem And Tem ◽  
Sperm Development ◽  
Ultrastructural Characteristics ◽  
The University

Oreochromis mossambicus is currently receiving much attention as a candidater species for aquaculture programs within Southern Africa. This has stimulated interest in its breeding cycle as well as the morphological characteristics of the gonads. Limited information is available on SEM and TEM observations of the male gonads. It is known that the testis of O. mossambicus is a paired, intra-abdominal structure of the lobular type, although further details of its characteristics are not known. Current investigations have shown that spermatids reach full maturity some two months after the female becomes gravid. Throughout the year, the testes contain spermatids at various stages of development although spermiogenesis appears to be maximal during November when spawning occurs. This paper describes the morphological and ultrastructural characteristics of the testes and spermatids.Specimens of this fish were collected at Syferkuil Dam, 8 km north- west of the University of the North over a twelve month period, sacrificed and the testes excised.

The North West Passage

2014 ◽  
Author(s):  
Roald Amundsen ◽  
Godfred Hansen
Keyword(s):  
North West ◽  
The North
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