Using the EM31 to measure ground electrical conductivity.

Slides:

Advertisements

Similar presentations

1.Force of attraction between two masses. 2.All masses have gravitational pull. 3.Determined by distance and mass. 4.In our case on Earth we perceive Gravity.

Advertisements

Chapter 15 Lesson 3 Pages F30 – F35

Magnetic Field 5.

AA&A Spring Archaeological Prospecting What have you got? Where do you look? Where do you dig??? –*Aerial photography –*Electrical resistivity.

Where do those plate reconstructions through time come from?

Methods of Exploration. Methods of Mineral Exploration The most common methods of mineral exploration are: Aerial methods – magnetic, gravity and electromagnetic.

Geophysical and Geochemical Exploration Techniques  The specification sates that you should be able to:  Describe the geophysical exploration techniques.

Finding a Site Survey and Excavation September 9, 2014 Anth 130.

Earth as a System: Earth: A Unique Planet 2.1 and 2.2 Page 27.

MAGNETISM. I.General Properties of magnets A. They have polarity – A north and a south pole A. They have polarity – A north and a south pole B. Like poles.

Mineral Exploration Tel: (07) Fax: (07)

Earth and Moon Formation and Structure

Geophysical and Geochemical Exploration Techniques  The specification sates that you should be able to:  Describe the geophysical exploration techniques.

Electromagnetic Induction (EMI) AP Physics. Electromagnetic Induction (EMI) A changing magnetic field can induce a current in a circuit called the induced.

THE EARTH’S MAGNETIC FIELD Note; The geographical north pole acts like the south pole of a magnet.

The Electromagnetic Spectrum. What is a wave? A wave is made when particles move up and down.

Biography. Electricity and Magnetism  Quick Summary  William Gilbert was a physician who developed and conducted experiments about electricity and magnetism.

Midterm results Average mark 73.7% (29.5 / 40) Median mark 30 / 40.

Question 1 1) wavelength 2) frequency 3) period 4) amplitude 5) energy

MAGNETISM REVIEW ANSWERS UP!!. WHAT IS THE NAME OF THE MINERAL DISCOVERED BY THE GREEKS WITH MAGNETIC PROPERTIES?

Lesson 2. Charged Objects The charge of an object can be measured in Coulombs. Q = Ne Where Q is the amount of charge in coulombs, N is the total number.

The Earth’s Magnetic Field

Chapter 26 Electromagnetism. Mass of Electron Determined by J.J. Thomson Determined by the deflection of the electron in a cathode ray tube.

M AGNETS By Jessica. W HAT IS THE HISTORY OF MAGNETS ? In ancient times cave men knew of a rock that such force that could pull other rocks out of the.

Igneous Rock Scheme Page 6, Earth Science Reference Table.

Aurora.  Aurora is a phenomenon appearing in the sky and usually happens in southern or northern regions and it happens at least once or more in one.

Christine Allen 3 rd Hour Mr. Maynard’s Science. The layer that we live on is called the lithosphere. The lithosphere is composed of igneous, metamorphic,

Learning Targets I can explain how the Earth’s magnetic field protects from harmful radiation. The Sun Vocabulary Magnetosphere Gauss Declination.

LC Circuit Section 22.5 There is a characteristic frequency at which the circuit will oscillate, called the resonance frequency.

The Electromagnetic Spectrum

Unit 3 Lesson 1 The Electromagnetic Spectrum

Physics 2 Stage show Learning outcomes

The Electromagnetic Spectrum

CHAPTER 3: Light.

Magnetic method Magnetic force and field strength for pole strength m’ and m.

Transfer of Energy.

The Atmosphere.

What are the Destructive Effects of Earthquakes?

The Theory of Plate Tectonics

The Characteristics of LIGHT

Atomic Theory Notes.

Light and Color Remember the speed of light … 3 x 108 m/s

Electromagnetic Waves

Light Physics Mrs. Coyle.

C13.5 Global Climate Change – Greenhouse Gases

These workers are drilling a hole that will be more than two kilometers deep. Later they will lower instruments into the hole to record data at that depth.

Magnetic Field of a Solenoid

Magnets and Electromagnets

Review They are found at the surface of the Earth

Intro to Plate Tectonics

Magnets and Electromagnets

The Electromagnetic Spectrum

Electromagnetic Spectrum

Radiation, Spectroscopy, and Telescopes

Vocab #7 Mr. Addeo.

The Electromagnetic Spectrum

PLAYING THE MAGNETIC FIELD

Earth, Space and Magnetism

REMOTE SENSING.

Unit 3 Lesson 1 The Electromagnetic Spectrum

Unit 3 Lesson 1 The Electromagnetic Spectrum

Layers of the Earth.

Physical Science SPS 9: Properties of Waves (part 5)

Radioactive dating.

These workers are drilling a hole that will be more than two kilometers deep. Later they will lower instruments into the hole to record data at that depth.

ROYGBIV FORMAT NUMBER LINE FORMAT.

Types of Fossils Fossils are evidence used to interpret and understand the history of the Earth and the things that have lived here. By T. Brown 2004.

Presentation transcript:

Using the EM31 to measure ground electrical conductivity.

A portable gamma ray spectrometer is used to map the distribution of trace amounts of radio-isotopes.

The strength of the Earth’s magnetic field varies because of the presence of magnetically susceptible minerals, or iron-rich waste, in rocks. Here we are measuring the total magnetic field strength.

Measurements of the Earth’s magnetic field strength have to be corrected for additional effects from the atmosphere before we can interpret the geology. Another approach is to just measure the gradient of the magnetic field between two points. The students here are using a magnetic gradiometer to do just that.

A map of ground electrical conductivity across the site produced from the students data. The area of high electrical conductivity (green) highlights the boundary of the old landfill site. The areas of very high conductivity (red) are large metallic objects, possibly even whole old vehicles!