Rhedir gan School of Ocean Sciences

20.000 Credyd neu 10.000 Credyd ECTS

Semester 1

Trefnydd: Dr Dei Huws

This module concerns itself with the principles of geophysical surveying within the context of applied marine geoscience; specifically for its use in engineering and environmental geophysics. As such, the practical elements of the module relate to relatively shallow sub-surface coverage (typically <100m) and high resolution (sub-metric) – though the theory taught is generally scale-independent. This module forms an important part of the programme specification in Geological Oceanography since it deals with understanding the different techniques with which the earth’s sub-surface can be mapped as well as the theory underpinning these techniques (and therefore the limitations as well as power of the methods). As in all aspects of the programme, there is a practical element to this module and students are given the opportunity to use industry-standard software as part of the exercises involved. The aim of the module is to enable the student to have a broad overall understanding of geophysical surveying for engineering and environmental applications; but this coupled with the theoretical and practical understanding that enables them to critically analyse the acquired datasets. In outline, the module comprises of seismic surveying (refraction and reflection) and electrical methods (EM and resistivity). Depending on circumstances this year, it may be possible to include an optional fieldtrip involving the use of magnetic methods of field survey.

In list form, the syllabus can be summarised thus:

Seismic surveying

a. Propagation of seismic waves in the subsurface

b. Field hardware

c. Seismic refraction surveying

d. Seismic reflection surveying

e. Seismic data processing

f. Seismic interpretation

Electrical and electro-magnetic surveying

a. Underlying theory

b. Data acquisition techniques

c. Interpretation techniques

d. Application to terrestrial and marine studies

ardderchog

Thorough understanding of the principles of geophysics (within the scope of the curriculum, learning outcomes and skills outlined in sections 14 to 17 of this form) Highly developed appreciation and limited understanding of the underlying theory and potential limitations/power of geophysical techniques for sub-surface imaging and geological interpretation Highly developed ability to solve numerical problems associated geophysical investigation Highly developed ability to acquire, process, interpret and present geophysical data

trothwy

A partial understanding of the principles of geophysics (within the scope of the curriculum, learning outcomes and skills outlined in sections 14 to 17 of this form) Basic appreciation and some understanding of the underlying theory and potential limitations/power of geophysical techniques for sub-surface imaging and geological interpretation Basic ability to solve numerical problems associated geophysical investigation Basic ability to acquire, process, interpret and present geophysical data

da

A complete understanding of the principles of geophysics (within the scope of the curriculum, learning outcomes and skills outlined in sections 14 to 17 of this form) Comprehensive appreciation and limited understanding of the underlying theory and potential limitations/power of geophysical techniques for sub-surface imaging and geological interpretation Ability to solve numerical problems associated geophysical investigation Ability to acquire, process, interpret and present geophysical data

1. Upon successful completion of this module, students should be able to: demonstrate an understanding of the physics which governs the earth’s geophysical response – specifically in relation to seismic, electrical, electro-magnetic and magnetic and techniques.

2. Demonstrate a knowledge of the hardware and software used in the field of environmental and engineering geophysics

3. Acquire, process and interpret geophysical data using appropriate theory and software

4. Show an appreciation of the limitations of the geophysical method.

Math	Enw	Disgrifiad	Pwysau
GWAITH CWRS	Resistivity excercise		20.00
GWAITH CWRS	Seismic interpretation	Seismic interpretation of high resolution reflection data using IHS Kingdom Software.	30.00
ARHOLIAD	Online Exam		50.00

		Oriau
Fieldwork	OPTIONAL Magnetics field survey	3
Lecture	Formal lectures (equivalent of a traditional 30 x 1 hrs). These will likely be reduced in duration and pre-recorded. Some will be synchronous online delivery	30
Workshop	Resistivity problem sheet workshop - This will either be oncampus or synchronous online delivery	3
Practical classes and workshops	Computer-based exercise (1 x 8 hrs, 1 x 4 hrs seismic interpretation computer exercise). This will be either oncampus or synchronous live (or both)	12
Private study	Assessment work-up, self-study work during the lecture series and examination revision	152

• Rhifedd - Medrusrwydd wrth ddefnyddio rhifau ar lefelau priodol o gywirdeb
• Defnyddio cyfrifiaduron - Medrusrwydd wrth ddefnyddio ystod o feddalwedd cyfrifiadurol
• Hunanreolaeth - Gallu gweithio mewn ffordd effeithlon, prydlon a threfnus. Gallu edrych ar ganlyniadau tasgau a digwyddiadau, a barnu lefelau o ansawdd a phwysigrwydd
• Archwilio - Gallu ymchwilio ac ystyried dewisiadau eraill
• Adalw gwybodaeth - Gallu mynd at wahanol ac amrywiol ffynonellau gwybodaeth
• Sgiliau Rhyngbersonol - Gallu gofyn cwestiynau, gwrando'n astud ar atebion a'u harchwilio
• Dadansoddi Beirniadol & Datrys Problem - Gallu dadelfennu a dadansoddi problemau neu sefyllfaoedd cymhleth. Gallu canfod atebion i broblemau drwy ddadansoddiadau ac archwilio posibiliadau
• Ymwybyddiaeth o ddiogelwch - Bod yn ymwybodol o'ch amgylchedd a hyder o ran cadw at reoliadau iechyd a diogelwch
• Cyflwyniad - Gallu cyflwyno gwybodaeth ac esboniadau yn glir i gynulleidfa. Trwy gyfryngau ysgrifenedig neu ar lafar yn glir a hyderus.
• Gwaith Tîm - Gallu cydweithio'n adeiladol ag eraill ar dasg gyffredin, ac/neu fod yn rhan o dîm gweithio o ddydd i ddydd
• Dadl - Gallu cyflwyno, trafod a chyfiawnhau barn neu lwybr gweithredu, naill ai gydag unigolyn neu mewn grwˆp ehangach

Ability to use industry standard seismic reflection software (IHS Kingdom Suite) for hoizon picking, gridding and contouring - as well as simple depth conversion. Use of IPI2Win to conduct inversion of electrical resistivity data.

Gorfodol mewn cyrsiau:

• F652: MSci Geological Oceanography year 3 (MSCI/GO)
• F734: MSci Physical Oceanography year 3 (MSCI/PO)

Opsiynol mewn cyrsiau:

• F650: BSC Geological Oceanography year 3 (BSC/GEO)
• F62F: BSc Geological Oceanography year 3 (BSC/GEOF)
• 8S54: BSc Geological Oceanography (with International Experience) year 4 (BSC/GEOIE)
• F7F6: BSc Ocean and Geophysics year 3 (BSC/OGP)
• F840: BSc Physical Geography and Oceanography year 3 (BSC/PGO)