Update foundations_sevensteps.rst (#242)

Author: james-blewman

content/foundations/foundations_sevensteps.rst

@@ -13,7 +13,7 @@ A seven-step framework for applied geophysics
 Geophysics can play an important role in helping solve resource exploration,
 environmental, or geotechnical problems. The application of geophysics is most
 effectively carried out by following a seven-step framework. Careful thought
-and due dilligence at each step is important to achieve a final outcome.
+and due diligence at each step is important to achieve a final outcome.
 
 
 1. **Setup:** *What is the Problem?*
@@ -25,11 +25,11 @@ and due dilligence at each step is important to achieve a final outcome.
     - Locating buried objects
     - Obtaining 3D images of the subsurface
 
- Assemble prior information that might be relevant. Details for using the seven-step procedure will depend upon what information is being sought and what is available.
+ Assemble prior information that might be relevant. Details for using the seven-step procedure will depend upon what information is sought and what is available.
 
-2. **Properties:**  Understand how geologic and man-made materials of
+2. **Properties:**  Understand how geologic and human-made materials of
    relevance to the problem can be characterized by physical properties. The key
-   is to find a physical property of the sought object/geology  that is different
+   is to find a physical property of the sought object/geology that is different
    from that of the surrounding material. This is a crucial component needed to
    link geophysics with the geoscience problem being investigated. Important
    physical properties are:
@@ -44,19 +44,19 @@ and due dilligence at each step is important to achieve a final outcome.
 
 3. **Surveys:** Select a geophysical survey that is sensitive to the physical
    property of relevance to the problem.  Design an effective and efficient
-   methodolgy for collecting the field data. This will involve forward modelling
+   methodology for collecting the field data. This will involve forward modelling
    and processing of the simulated data as well as addressing issues of noise and
    data quality. This builds realistic expectations for what information can be
-   expected from analysis of the geophysical data and the overall suitability of
+   expected from the analysis of the geophysical data and the overall suitability of
    the chosen survey.
 
 \
 
-4. **Data:** Carry out the field survey taking all necessary actions to ensure
-   complete, high quality, and cost effective data sets. Geophysical data can be
+4. **Data:** Carry out the field survey, taking all necessary actions to ensure
+   complete, high-quality, and cost-effective data sets. Geophysical data can be
    acquired in boreholes, on the surface, or in the air using aircraft. Field
-   procedures must permit acquisition of high quality data, yet they must be
-   economical, and safe to obtain.
+   procedures must permit the acquisition of high-quality data, yet they must be
+   economical and safe to obtain.
 
 \
 
@@ -67,11 +67,11 @@ and due dilligence at each step is important to achieve a final outcome.
 \
 
 6. **Interpretation:** Interpret results in terms of geological or
-   geotechnical objectives.The goal is to draw conclusions or make decisions
-   based upon the geophysical data. There are two distinct components to
+   geotechnical objectives. The goal is to draw conclusions or make decisions
+   based on geophysical data. There are two distinct components to
    interpretation. The first involves estimating how physical properties are
    distributed. The second involves gaining some geological understanding based
-   upon those physical property distributions. Just like much of the geosciences,
+   on those physical property distributions. Like much of the geosciences,
    non-uniqueness is a ubiquitous and  persistent characteristic of most
    geophysical interpretations.
 
@@ -80,23 +80,22 @@ and due dilligence at each step is important to achieve a final outcome.
 7. **Synthesis:** Correlate the interpretations with prior and alternative
    information, and decide if your results are adequate for the particular
    problem. Synthesis means making sure geophysical results agree with everything
-   else that is known about the problem. Also a judgement must be made about the
-   effectiveness and completeness of the geophysical results, and their impact
-   upon the initial geological, engineering, or geophysical question.
+   else that is known about the problem. Also, a judgement must be made about the
+   effectiveness and completeness of the geophysical results and their impact
+   on the initial geological, engineering, or geophysical question.
 
 This sequence of images summarizes the framework visually.
 
 .. figure:: ./images/seven_steps.jpg
 	:align: center
 	:scale: 90 %
 
-All tasks in the seven-step process are inter-related, so the distinction
+All tasks in the seven-step process are interrelated, so the distinction
 between the steps can become blurred. For example, the geoscience problem will
-determine an appropriate interpretation procedure, which in turn will place
-constraints upon the survey design and choice of processing steps. Also, data
+determine an appropriate interpretation procedure, which will constraints the survey design and the choice of processing steps. Also, data
 processing, interpretation and synthesis are often tightly related. However,
 it is useful to think in terms of these seven steps because they form a
-framework, which can be employed for any application of geophysical work to
+framework which can be employed for any application of geophysical work to
 applied geoscience problems.
 
 
@@ -105,9 +104,9 @@ Summary for the seven-step framework
 
  1. **Setup:** Establish the geoscience objectives, consider conventional practice, and identify how geophysics might contribute.
  2. **Properties:** Characterize materials that can be expected and establish the likely physical property contrasts.
- 3. **Surveys:** Determine a suitable geophysical survey, and design an effective and efficient field survey. Identify possible sources of error, noise and mis-interpretation.
- 4. **Data:** Carry out the field survey, taking all necessary actions to ensure complete, high quality, and cost effective data sets.
- 5. **Processing:** Plot the data, and apply appropriate processing and analysis. 
- 6. **Interpretation:** Interpret results in terms of physical property distribution, and then in terms of the original geoscience objectives.
- 7. **Synthesis:** Combine interpretations with prior knowledge about the problem, and with other relevant information. Decide if your results are adequate for the particular problem. Iteration is usually necessary.
+ 3. **Surveys:** Determine a suitable geophysical survey and design an effective and efficient field survey. Identify possible sources of error, noise and misinterpretation.
+ 4. **Data:** Carry out the field survey, taking all necessary actions to ensure complete, high-quality, and cost-effective data sets.
+ 5. **Processing:** Plot the data and apply appropriate processing and analysis. 
+ 6. **Interpretation:** Interpret results in terms of physical property distribution and then in terms of the original geoscience objectives.
+ 7. **Synthesis:** Combine interpretations with prior knowledge about the problem and other relevant information. Decide if your results are adequate for the particular problem. Iteration is usually necessary.