diff --git a/content/DC_resistivity/DC_basic_principles_heterogeneous_earth.rst b/content/DC_resistivity/DC_basic_principles_heterogeneous_earth.rst index c5bade5d..c39b3226 100644 --- a/content/DC_resistivity/DC_basic_principles_heterogeneous_earth.rst +++ b/content/DC_resistivity/DC_basic_principles_heterogeneous_earth.rst @@ -27,7 +27,7 @@ Exploration Geophysicists. :file: ./figure2.html -.. _Mont Isa: http://em.geosci.xyz/content/case_histories/mt_isa/index.html +.. _Mont Isa: https://em.geosci.xyz/content/case_histories/mt_isa/index.html Charge distribution =================== diff --git a/content/DC_resistivity/DC_examples.rst b/content/DC_resistivity/DC_examples.rst index 852da098..c5c57da7 100644 --- a/content/DC_resistivity/DC_examples.rst +++ b/content/DC_resistivity/DC_examples.rst @@ -5,5 +5,5 @@ Case Histories `Mont Isa`_ is great example of the use of DC as part of a mining exploration campaign. -.. _Mont Isa: http://em.geosci.xyz/content/case_histories/mt_isa/index.html +.. _Mont Isa: https://em.geosci.xyz/content/case_histories/mt_isa/index.html diff --git a/content/DC_resistivity/DC_instruments.rst b/content/DC_resistivity/DC_instruments.rst index 195152b6..d1f8b402 100644 --- a/content/DC_resistivity/DC_instruments.rst +++ b/content/DC_resistivity/DC_instruments.rst @@ -175,7 +175,7 @@ References Corwin, R.F., 1990, *The self-potential method for environmental and engineering applications*, in Geotechnical and Environmental Geophysics, Vol I: Review and Tutorial, (Ward, S.H., ed), Society of Exploration Geophysics, pg 127 - 146. -.. _Geometrics: http://www.geometrics.com/ +.. _Geometrics: https://www.geometrics.com/ diff --git a/content/DC_resistivity/DC_interpretation.rst b/content/DC_resistivity/DC_interpretation.rst index 4f750645..9508ba1a 100644 --- a/content/DC_resistivity/DC_interpretation.rst +++ b/content/DC_resistivity/DC_interpretation.rst @@ -211,9 +211,9 @@ Data, model and inversion files used in this page can be downloaded below: `Two_Spheres `_ -Utilities: UBC-DC2D `data viewer `_ and `model viewer -`_ +`_ References ********** diff --git a/content/appendix/apps.rst b/content/appendix/apps.rst index e7c54a51..9ec1d68e 100644 --- a/content/appendix/apps.rst +++ b/content/appendix/apps.rst @@ -49,6 +49,6 @@ If you are familiar with python and github, you can install them via https://github.com/geoscixyz/gpgLabs -.. _Jupyter: http://jupyter.org +.. _Jupyter: https://jupyter.org diff --git a/content/appendix/lectures.rst b/content/appendix/lectures.rst index f373ed94..4a629595 100644 --- a/content/appendix/lectures.rst +++ b/content/appendix/lectures.rst @@ -108,7 +108,7 @@ Magnetics 2 - `Magnetics lecture slides `_ -- `Jupyter notebook: InducedMag2D.ipynb `_ +- `Jupyter notebook: InducedMag2D.ipynb `_ @@ -137,7 +137,7 @@ Magnetics 3 - `Magnetics lecture slides `_ -- `Jupyter notebook: InducedMag2D.ipynb `_ +- `Jupyter notebook: InducedMag2D.ipynb `_ @@ -166,7 +166,7 @@ Magnetics 4 - `Magnetics lecture slides `_ -- `Jupyter notebook: InducedMag2D.ipynb `_ +- `Jupyter notebook: InducedMag2D.ipynb `_ @@ -195,7 +195,7 @@ Magnetics 5 - `Magnetics lecture slides `_ -- `Jupyter notebook: InducedMag2D.ipynb `_ +- `Jupyter notebook: InducedMag2D.ipynb `_ @@ -363,7 +363,7 @@ Seismic 5 - `Seismology lecture slides `_ -- `Jupyter notebook: SeismicNMOapp.ipynb `_ +- `Jupyter notebook: SeismicNMOapp.ipynb `_ @@ -446,7 +446,7 @@ Electromagnetics 2 - `EM lecture slides `_ -- `Jupyter notebook: ResponseFct.ipynb `_ +- `Jupyter notebook: ResponseFct.ipynb `_ @@ -475,7 +475,7 @@ Electromagnetics 3 - `EM lecture slides `_ -- `Jupyter notebook: ResponseFct.ipynb `_ +- `Jupyter notebook: ResponseFct.ipynb `_ @@ -502,7 +502,7 @@ DC Resistivity 1 -- `Jupyter notebook: DCLab.ipynb `_ +- `Jupyter notebook: DCLab.ipynb `_ @@ -531,7 +531,7 @@ DC Resistivity 2 - `DC Resistivity lecture slides `_ -- `Jupyter notebook: DCLab.ipynb `_ +- `Jupyter notebook: DCLab.ipynb `_ diff --git a/content/electromagnetics/electromagnetic_basic_principles.rst b/content/electromagnetics/electromagnetic_basic_principles.rst index 6d885820..260daf5e 100644 --- a/content/electromagnetics/electromagnetic_basic_principles.rst +++ b/content/electromagnetics/electromagnetic_basic_principles.rst @@ -145,7 +145,7 @@ Consider the goal of using an inductive EM source to locate a conductive body bu : Conceptual diagram for three loops -Eddy currents are generated in the buried body by changing magnetic flux passing through the body. We can learn a lot about the coupling between the transmitter, buried body and receiver by approximating the buried body by a wire coil with resistance :math:`R` and inductance :math:`L`. The resistance approximates the electrical resistivity of the earth and the inductance is a geometrical quantity that depends on the shape of the loop. The following discussion of the circuit model will be mostly conceptual. For a more detailed and quantitative discussion please see the `em.geosci `__ resource--(not required for eosc 350. +Eddy currents are generated in the buried body by changing magnetic flux passing through the body. We can learn a lot about the coupling between the transmitter, buried body and receiver by approximating the buried body by a wire coil with resistance :math:`R` and inductance :math:`L`. The resistance approximates the electrical resistivity of the earth and the inductance is a geometrical quantity that depends on the shape of the loop. The following discussion of the circuit model will be mostly conceptual. For a more detailed and quantitative discussion please see the `em.geosci `__ resource--(not required for eosc 350. Transmitter and primary field ----------------------------- @@ -176,7 +176,7 @@ The effect on the secondary field of the relative positions and orientations of .. math:: \frac{H_s}{H_p} = CQ(\alpha) = \frac{\alpha^2 + i\alpha}{1 + \alpha^2} -where :math:`\alpha = \omega L/R` is called the induction number. See `em.geosci `__ for full derivations of the coupling coefficient and inductive response function. +where :math:`\alpha = \omega L/R` is called the induction number. See `em.geosci `__ for full derivations of the coupling coefficient and inductive response function. The secondary field will have a much smaller amplitude than the primary field (units of field measurements are often parts per million) and also a phase shift. We can decompose the signal into a component in phase with the transmitter and another component one quarter period out of phase, called the quadrature component. These components can be represented as a complex number whose real part is the in-phase secondary field and whose imaginary part is the quadrature signal. diff --git a/content/electromagnetics/electromagnetic_physical_properties.rst b/content/electromagnetics/electromagnetic_physical_properties.rst index 507990fd..bc2da2c4 100644 --- a/content/electromagnetics/electromagnetic_physical_properties.rst +++ b/content/electromagnetics/electromagnetic_physical_properties.rst @@ -26,6 +26,6 @@ conductivity for rocks and minerals is presented in :numref:`roughchart`. While conductivity is the generally the main physical property of interest, EM induction methods also depend on the `magnetic permeability`_ and `electrical permitivity`_ of rocks. Their importance depends upon the frequency of the EM signal used for given a system. -.. _magnetic permeability: http://em.geosci.xyz/content/physical_properties/magnetic_permeability/index.html +.. _magnetic permeability: https://em.geosci.xyz/content/physical_properties/magnetic_permeability/index.html -.. _electrical permitivity: http://em.geosci.xyz/content/physical_properties/dielectric_permittivity/index.html +.. _electrical permitivity: https://em.geosci.xyz/content/physical_properties/dielectric_permittivity/index.html diff --git a/content/gravity/gravity_data.rst b/content/gravity/gravity_data.rst index c3ce8800..1bc520ed 100644 --- a/content/gravity/gravity_data.rst +++ b/content/gravity/gravity_data.rst @@ -39,7 +39,7 @@ Modern instruments use similar mechanisms, but they incorporate automatic leveling, computer driven recording, and other convenience features. .. See, for -.. example, http://www.lacosteromberg.com/ that has several highly respected +.. example, https://www.lacosteromberg.com/ that has several highly respected .. portable instruments (both spring based (image to the right) and "free-fall" .. types), as well as air-sea gravity systems. diff --git a/content/gravity/gravity_gradients.rst b/content/gravity/gravity_gradients.rst index 8dca68de..fed89229 100644 --- a/content/gravity/gravity_gradients.rst +++ b/content/gravity/gravity_gradients.rst @@ -176,7 +176,7 @@ of targets can be detected? #. Anticipated limit for future systems is a little better. .. Two (somewhat complex) figures summarizing the limits of detectability for -.. various ore bodies (mostly in Australia) are provided separately `here`_ +.. various ore bodies (mostly in Australia) are provided separately `here`_ .. (PDF). Keep in mind that questions about structures associated with oil and .. gas are often larger targets than those associated with mineral exploration, .. so these types of cutting edge procedures are so far more directly useful to @@ -193,7 +193,7 @@ following locations: - If you are interested, there are some interactive figures on frequency domain filtering at - http://www.geoexplo.com/airborne_survey_workshop_filtering.html. + https://www.geoexplo.com/airborne_survey_workshop_filtering.html. - There is a good summary of Advanced Processing of Potential Fields by Getech (Houston, and Leeds). See the tutorial on-line at Getech via Advanced @@ -202,8 +202,8 @@ following locations: .. The Getech home page is at https://getech.com/gravity-magnetic-data-services/. -.. _a separate page of images: http://www.eoas.ubc.ca/courses/eosc350/content/methods/meth_4/assets/gravgrad-figs.pdf -.. _Turner Valley: http://www.sgl.com/technicalpapers/EAGEabst-final-TV.pdf +.. _a separate page of images: https://www.eoas.ubc.ca/courses/eosc350/content/methods/meth_4/assets/gravgrad-figs.pdf +.. _Turner Valley: https://www.sgl.com/technicalpapers/EAGEabst-final-TV.pdf diff --git a/content/gravity/gravity_other_notes.rst b/content/gravity/gravity_other_notes.rst index 2308bcbe..49d9b978 100644 --- a/content/gravity/gravity_other_notes.rst +++ b/content/gravity/gravity_other_notes.rst @@ -141,6 +141,6 @@ laser interferometer. Specifications include: - Operating dynamic range: world-wide .. For a good summary of the instrument, how it works, applications, and current -.. users, see the company's web page at http://www.microgsolutions.com/index.html +.. users, see the company's web page at https://www.microgsolutions.com/index.html -.. _Geodetic Survey Division: http://webapp.geod.nrcan.gc.ca/geod/ \ No newline at end of file +.. _Geodetic Survey Division: https://webapp.geod.nrcan.gc.ca/geod/ \ No newline at end of file diff --git a/content/induced_polarization/induced_polarization_basic_principles.rst b/content/induced_polarization/induced_polarization_basic_principles.rst index ef97e6cd..49f44ef3 100644 --- a/content/induced_polarization/induced_polarization_basic_principles.rst +++ b/content/induced_polarization/induced_polarization_basic_principles.rst @@ -88,6 +88,6 @@ response is provided. Those measurements can be in time or frequency and the uni of the "chargeability" are inherited from the data. We outline below: .. ToDo: Integrate the material currently in Induced polarization -.. http://gpg.geosci.xyz/en/physprops/content/induced_polarization/induced_polarization_measurements_data.html +.. https://gpg.geosci.xyz/en/physprops/content/induced_polarization/induced_polarization_measurements_data.html .. so that go through each type of datum and hence the meanings and units for each of the .. associated chargeabilities. \ No newline at end of file diff --git a/content/induced_polarization/induced_polarization_physical_properties.rst b/content/induced_polarization/induced_polarization_physical_properties.rst index e1302fb8..7b62a0f2 100644 --- a/content/induced_polarization/induced_polarization_physical_properties.rst +++ b/content/induced_polarization/induced_polarization_physical_properties.rst @@ -223,7 +223,7 @@ Thus, the chargeability of a rock increases and its tortuosity increases. .. Physical Phenomenons .. ==================== -.. .. _induced polarization measurements data: http://gpg.geosci.xyz/en/latest/content/induced_polarization/induced_polarization_measurements_data.html +.. .. _induced polarization measurements data: https://gpg.geosci.xyz/en/latest/content/induced_polarization/induced_polarization_measurements_data.html .. The chargeability of earth materials is essentially an electrochemical effect .. caused by many factors, not all of which are completely understood. If ground diff --git a/content/magnetics/magnetics_basic_principles.rst b/content/magnetics/magnetics_basic_principles.rst index 0022ff8c..803e4232 100644 --- a/content/magnetics/magnetics_basic_principles.rst +++ b/content/magnetics/magnetics_basic_principles.rst @@ -89,7 +89,7 @@ Earth's field has a strength of approximately 70,000 nanoTeslas equator. Field orientation and strength varies around the world, as presented in :numref:`IGRF_three_figures` based upon the IGRF from 2003 (NOAA_). -.. _IAGA: http://www.ngdc.noaa.gov/IAGA/vmod/ +.. _IAGA: https://www.ngdc.noaa.gov/IAGA/vmod/ .. _magnetics_three_figures: @@ -640,11 +640,11 @@ California 95131 U.S.A. .. links: -.. _NOAA: http://www.ngdc.noaa.gov/geomag/geomag.shtml -.. _Canadian National Geomagnetism Program: http://www.geomag.nrcan.gc.ca/index-eng.php -.. _magnetic field calculator: http://www.ngdc.noaa.gov/geomag-web/ -.. _page: http://www.ngdc.noaa.gov/ngdc.html -.. _homepage: http://www.geomag.nrcan.gc.ca/index-eng.php -.. _geomagnetics website: http://www.geomag.bgs.ac.uk/ +.. _NOAA: https://www.ngdc.noaa.gov/geomag/geomag.shtml +.. _Canadian National Geomagnetism Program: https://www.geomag.nrcan.gc.ca/index-eng.php +.. _magnetic field calculator: https://www.ngdc.noaa.gov/geomag-web/ +.. _page: https://www.ngdc.noaa.gov/ngdc.html +.. _homepage: https://www.geomag.nrcan.gc.ca/index-eng.php +.. _geomagnetics website: https://www.geomag.bgs.ac.uk/ .. _magnetic_app: https://mybinder.org/v2/gh/geoscixyz/gpgLabs/main?filepath=notebooks%2Fmag%2FMag_Induced2D.ipynb .. _geodynamo: https://commons.wikimedia.org/w/index.php?curid=1712490 diff --git a/content/magnetics/magnetics_interpretation.rst b/content/magnetics/magnetics_interpretation.rst index 2b90b65a..88708e8d 100644 --- a/content/magnetics/magnetics_interpretation.rst +++ b/content/magnetics/magnetics_interpretation.rst @@ -110,7 +110,7 @@ Call for contributors .. raw:: html
- +
There are many other filters published in the literature. Please contact us if you would like to contribute to this page. @@ -382,11 +382,11 @@ We note the following features: .. image:: https://img.shields.io/badge/powered%20by-SimPEG-blue.svg - :target: http://simpeg.xyz + :target: https://simpeg.xyz :alt: SimPEG -.. _Simpeg: http://simpeg.xyz +.. _Simpeg: https://simpeg.xyz Validation ^^^^^^^^^^ @@ -403,14 +403,14 @@ Final Interpretation .. raw:: html
- +
.. Old Material .. ============ -.. .. _separate sidebar: http://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/blakely/blakely.html +.. .. _separate sidebar: https://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/blakely/blakely.html .. 2D plots of magnetic data, often referred to as maps, can provide insight @@ -426,7 +426,7 @@ Final Interpretation .. earth's field is measured at every location. To the right is a total field .. strength map for the whole world (a full size version is in the sidebar_). -.. .. _sidebar: http://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/sidebar-fields.html +.. .. _sidebar: https://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/sidebar-fields.html .. At the scale of most exploration or engineering surveys, a map of total field .. data gathered over ground with no buried susceptible material would appear @@ -442,7 +442,7 @@ Final Interpretation .. with a larger version, including alternative colour scale schemes, `shown in a .. sidebar`_. -.. .. _shown in a sidebar: http://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/sidebar-airmaps.html +.. .. _shown in a sidebar: https://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/sidebar-airmaps.html .. .. figure:: ./images/map-cust.gif .. :figclass: float-right-360 diff --git a/content/magnetics/magnetics_physical_property.rst b/content/magnetics/magnetics_physical_property.rst index 7cde58e9..cc6ab8d8 100644 --- a/content/magnetics/magnetics_physical_property.rst +++ b/content/magnetics/magnetics_physical_property.rst @@ -11,4 +11,4 @@ Background information about susceptility, how it is measured and tables of valu .. raw:: html -

Magnetite Lodestone.jpg
By Ryan Somma - Magnetite Lodestone, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=5228830

+

Magnetite Lodestone.jpg
By Ryan Somma - Magnetite Lodestone, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=5228830

diff --git a/content/magnetics/magnetics_processing.rst b/content/magnetics/magnetics_processing.rst index 40b3637a..59fd0705 100644 --- a/content/magnetics/magnetics_processing.rst +++ b/content/magnetics/magnetics_processing.rst @@ -36,7 +36,7 @@ any day in the most recent 3 years. : Adapted from `NRC`_ -.. _geomag: http://www.geomag.nrcan.gc.ca/index-eng.php +.. _geomag: https://www.geomag.nrcan.gc.ca/index-eng.php .. _NRC: https://www.spaceweather.gc.ca/tech/index-en.php#pip .. _magnetics_regional_trend: diff --git a/content/magnetics/magnetics_survey.rst b/content/magnetics/magnetics_survey.rst index a4ef39f1..e3794cdb 100644 --- a/content/magnetics/magnetics_survey.rst +++ b/content/magnetics/magnetics_survey.rst @@ -160,17 +160,17 @@ use of these codes. See MAG3D in IAG's Chapter 10, "Sftwr & manuals" . | Continuous earth: |`v_sus`_ | |`v_msh`_ |`v_mag`_ | +-------------------+----------------+-------------------+---------------+---------------+ -.. _block_sus: http://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/assets/datmod-files/block.sus -.. _block_sus_loc: http://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/assets/datmod-files/block.sus_loc -.. _block_msh: http://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/assets/datmod-files/block.msh -.. _block_mag: http://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/assets/datmod-files/block.mag -.. _block_5_sus: http://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/assets/datmod-files/block-5.sus -.. _block_5_sus_loc: http://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/assets/datmod-files/block-5.sus_loc -.. _block_msh: http://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/assets/datmod-files/block.msh -.. _block_5_mag: http://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/assets/datmod-files/block-5.mag -.. _v_sus: http://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/assets/datmod-files/v.mag -.. _v_msh: http://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/assets/datmod-files/v.msh -.. _v_mag: http://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/assets/datmod-files/v.mag +.. _block_sus: https://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/assets/datmod-files/block.sus +.. _block_sus_loc: https://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/assets/datmod-files/block.sus_loc +.. _block_msh: https://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/assets/datmod-files/block.msh +.. _block_mag: https://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/assets/datmod-files/block.mag +.. _block_5_sus: https://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/assets/datmod-files/block-5.sus +.. _block_5_sus_loc: https://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/assets/datmod-files/block-5.sus_loc +.. _block_msh: https://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/assets/datmod-files/block.msh +.. _block_5_mag: https://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/assets/datmod-files/block-5.mag +.. _v_sus: https://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/assets/datmod-files/v.mag +.. _v_msh: https://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/assets/datmod-files/v.msh +.. _v_mag: https://www.eos.ubc.ca/courses/eosc350/content/methods/meth_3/assets/datmod-files/v.mag .. _magnetics_instrumentation: diff --git a/content/physical_properties/induced_polarization_physical_properties_duplicate.rst b/content/physical_properties/induced_polarization_physical_properties_duplicate.rst index 79410c6a..ef887a7b 100644 --- a/content/physical_properties/induced_polarization_physical_properties_duplicate.rst +++ b/content/physical_properties/induced_polarization_physical_properties_duplicate.rst @@ -186,7 +186,7 @@ response is provided. Those measurements can be in time or frequency and the uni of the "chargeability" are inherited from the data. We outline below: .. ToDo: Integrate the material currently in Induced polarization -.. http://gpg.geosci.xyz/en/physprops/content/induced_polarization/induced_polarization_measurements_data.html +.. https://gpg.geosci.xyz/en/physprops/content/induced_polarization/induced_polarization_measurements_data.html .. so that go through each type of datum and hence the meanings and units for each of the .. associated chargeabilities. @@ -518,7 +518,7 @@ Thus, the chargeability of a rock increases and its tortuosity increases. .. Physical Phenomenons .. ==================== -.. .. _induced polarization measurements data: http://gpg.geosci.xyz/en/latest/content/induced_polarization/induced_polarization_measurements_data.html +.. .. _induced polarization measurements data: https://gpg.geosci.xyz/en/latest/content/induced_polarization/induced_polarization_measurements_data.html .. The chargeability of earth materials is essentially an electrochemical effect .. caused by many factors, not all of which are completely understood. If ground diff --git a/content/physical_properties/seismic_velocity_duplicate.rst b/content/physical_properties/seismic_velocity_duplicate.rst index 7ecd76a6..22ab5ae6 100644 --- a/content/physical_properties/seismic_velocity_duplicate.rst +++ b/content/physical_properties/seismic_velocity_duplicate.rst @@ -150,7 +150,7 @@ Young's Modulus and Poisson's Ratio :align: right :figwidth: 35% - Young's modulus and Poisson's ratio diagram. `Image `__ from `Subsurface Wiki`_, licensed under `CC BY 3.0`_. + Young's modulus and Poisson's ratio diagram. `Image `__ from `Subsurface Wiki`_, licensed under `CC BY 3.0`_. Young's modulus is defined to be the ratio of longitudinal normal stress to longitudinal normal strain. @@ -440,10 +440,10 @@ Ultimately, this process is responsible for increasing the seismic velocities. .. rubric:: Footnotes -.. [#f1] L. Braile, http://web.ics.purdue.edu/~braile/edumod/waves/WaveDemo.htm, Copyright 2004-2010, +.. [#f1] L. Braile, https://web.ics.purdue.edu/~braile/edumod/waves/WaveDemo.htm, Copyright 2004-2010, .. _CC BY 3.0: https://creativecommons.org/licenses/by/3.0/ -.. _Subsurface Wiki: http://subsurfwiki.org/ +.. _Subsurface Wiki: https://subsurfwiki.org/ diff --git a/content/seismic/MASW.rst b/content/seismic/MASW.rst index 0cdefc71..406f3bbe 100644 --- a/content/seismic/MASW.rst +++ b/content/seismic/MASW.rst @@ -6,10 +6,10 @@ MASW MASW is an initialism that stands for multichannel analysis of surface waves. It is a seismic surveying technique that uses surface waves to study the propagation of shear waves in the subsurface. Compared to the refraction and reflection techniques, it is quite new and has been mainly used for geotechnical work. For more information on the MASW technique please see -- http://www.masw.com/WhatisMASW.html -- http://www.kgs.ku.edu/software/surfseis/Publications/ParkEtAl2007.pdf -- http://www.kgs.ku.edu/software/surfseis/masw.html -- http://www.masw.com/files/MIL-99-03.pdf +- https://www.masw.com/WhatisMASW.html +- https://www.kgs.ku.edu/software/surfseis/Publications/ParkEtAl2007.pdf +- https://www.kgs.ku.edu/software/surfseis/masw.html +- https://www.masw.com/files/MIL-99-03.pdf \ No newline at end of file diff --git a/content/seismic/seismic_sources.rst b/content/seismic/seismic_sources.rst index 7946f12e..913e8b35 100644 --- a/content/seismic/seismic_sources.rst +++ b/content/seismic/seismic_sources.rst @@ -59,4 +59,4 @@ When seismic surveying is needed to characterize ocean, lake or river bed sedime .. _CC BY-SA 3.0: https://creativecommons.org/licenses/by-sa/3.0/. -.. _CC BY-SA 2.5: http://creativecommons.org/licenses/by-sa/2.5 +.. _CC BY-SA 2.5: https://creativecommons.org/licenses/by-sa/2.5 diff --git a/content/seismic/seismic_survey.rst b/content/seismic/seismic_survey.rst index 221bc4c9..3799498c 100644 --- a/content/seismic/seismic_survey.rst +++ b/content/seismic/seismic_survey.rst @@ -7,7 +7,7 @@ Survey Seismic body waves travel away from their source, into the ground. As we have discussed earlier, the energy spreads in all possible directions away from the source, heading directly toward geophones or propagating down into the earth where it might be reflected or refracted. When setting up a seismic survey, one must consider the type of sources and receivers to employ and how to arrange them in order to capture enough information to address the geological question at hand. For example, refraction surveys are only useful where velocity generally increases with depth and one should not choose to perform one when there is a priori information indicating that that is unlikely to be the case. Once one has decided to perform a particular type of survey, the survey layout must be chosen. -.. http://www.enviroscan.com/home/seismic-refraction-versus-reflection UPDATE THIS PART +.. https://www.enviroscan.com/home/seismic-refraction-versus-reflection UPDATE THIS PART We will give an overview of some common source and receiver types, followed by an introduction to understanding survey geometry. diff --git a/content/seismic/wave_basics.rst b/content/seismic/wave_basics.rst index ef58ad6a..6a3c2347 100644 --- a/content/seismic/wave_basics.rst +++ b/content/seismic/wave_basics.rst @@ -121,7 +121,7 @@ A wave is a representation of the propagation of energy. In the case of seismic .. figure:: ./images/pondwaves-noleaves.jpg :align: center - Image reproduced with permission from The website of the `Gemini Observatory `__. The original can be found `here `__. + Image reproduced with permission from The website of the `Gemini Observatory `__. The original can be found `here `__. A wavefront indicates the set of locations at which the phase of the wave has the same value. To continue with the pond example, visualize the peaks (or troughs) of water ripples after a rock has been thrown in. The direction of propagation of the energy is normal to the wavefront. **Seismic rays** are imaginary lines perpendicular to the wavefront that indicate the path along which the wavefront is traveling. Rays are not physical entities. They exist only to illustrate where the energy travels. It is important to remark here that the arrival of energy at a geophone is not a point event. The energy is spread in space and time. Note how the peaks and troughs of the waves on the pond have widths, which remains constant as they propagate. Similarly, seismic energy will arrive at a geophone as a pulse of energy with some shape and width, not as a spike occurring a single instance in time. This pulse of energy is called a wavelet. @@ -172,6 +172,6 @@ are two primary reasons: .. _CC BY 3.0: https://creativecommons.org/licenses/by/3.0/ -.. _Subsurface Wiki: http://subsurfwiki.org/ -.. _L. Braile: http://web.ics.purdue.edu/~braile/ -.. _seismic wave demo: http://web.ics.purdue.edu/~braile/edumod/waves/WaveDemo.htm +.. _Subsurface Wiki: https://subsurfwiki.org/ +.. _L. Braile: https://web.ics.purdue.edu/~braile/ +.. _seismic wave demo: https://web.ics.purdue.edu/~braile/edumod/waves/WaveDemo.htm