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Storm Watch over USA with Stream Flood Status

Below you should see interactive map with active hurricane tracking over USA (Atlantic and Pacific). Also Weather Radar with current precipitation, next several days flooding outlook areas. Different color square markers indicate major river flood status with links to USGS site showing up-to-date water level and projected flooding. Purple squares - major flooding on-going. To see legend and toggle layers click on >> in top left corner.

Frequently asked questions (FAQ) on electrical geophysical equipment and software

How to convert conductivity to resistivity?

Are there any difference between LandMapper ERM-01 and other equipment available on the market?

How your equipment calculates electrical resistivity?

How to calculate geometrical coefficient K?

Does electrical resistivity correlate with any soil properties?

Can your equipment measure electrical resistivity/conductivity in soil and water samples?

How to determine the depth of the measurements?

More help...

How to convert conductivity to resistivity?

Electrical resistivity (ER) is reciprocal to conductivity (EC) and results can be easily recalculated using formula EC=1/ER or vice versa ER=1/EC. Electrical resistivity is more convenient to use on non-saline soils, where conductivity can be mSm/m, while resitivity measures in 102-103 Ohm m range. 1000 Ohm m equals 1 mSm/m. You can find more conversions to ppm, TDS, grains of salt in this flyer.

Happy New 2017 Year!

 

All of us at Landviser, LLC (USA) and IP GeoPro (Russia) are wishing our friends, collegues, customers and everybody else around the world Happy Holidays and a Great New Year! Looking forward to change, trust and fairness for all in 2017!!! We, as a small geo-consulting company, would continue to do our best in studying our Morther Earth and bringing Joy to the World!

Happy New 2016 Year!

All of us at Landviser, LLC (USA) and IP GeoPro (Russia) are wishing our friends, collegues, customers and everybody else around the world Happy Holidays and Great New Year!

Sign up for webinar "Application of Geophysical Methods to Agriculture: Methods Employed"

Dr. Larisa Golovko (President of Landviser, LLC) will be presenting "Geophysical Methods of Electrical Resistivity and Self-Potential in Agriculture" in first of 

 

 

Agricultural Geophysics Webinar Series: "Application of Geophysical Methods to Agriculture: Methods Employed"

A live webinar on the application of geophysics to agriculture will be offered on:

Tuesday, February 18, 2014, from 3pm - 4:30pm EST
(2:00 - 3:30 CST, 1:00 - 2:30 MST, 12:00 - 1:30 PST)

This first in a series of agricultural geophysics webinars will focus on the near-surface geophysical methods presently being used for agricultural purposes, which include resistivity, self-potential, electromagnetic induction, ground penetrating radar, dielectric sensors, VIS/NIR/MIR spectrometry, gamma ray spectrometry, mechanical soil compaction sensors, and ion selective potentiometry. Five presenters will provide a short overview of agricultural geophysical methods during the first 30 minutes of the webinar. The last hour of the webinar will be devoted to a panel discussion with the presenters, who will answer questions from the audience.

Местоположение

28° 8' 11.7564" N, 90° 50' 5.8596" W

Technical Specifications of LandMapper ERM-01

 

  • ·         Range of measurements…...............…………………………………….………......................................ER= 0.1-1 106 Ohm m
  • ·         Automatically adjusts electrical resistivity range to provide best measurement accuracy.

SibER - multi-electrode resistivity surveying set

Landviser, LLC is offering advanced equipment for deep electrical tomography - Siber-48 - manufactured by KB Electrometry, Ltd in Novosibirsk, Russia. Since 2012 they started to produce modificated version of "SibER". New device has new safer body, powerfull generator (inject current up to 2A), provide more stable and faster measurments.

Price of the system ordered through us is the same as listed on Nemfis.ru. Registered users can view complete price of the SibER-48 and SibER-64 equipped with two standard 5-m spaced cables in current catalog. Custom spacing of electrode connectors on the cables is also available per request.

Please, request your personalized quotation from us: info@landviser.com or call 1-609-412-0555 / 1-888-306-LAND. The system is shipped worldwide from Russia, shipping costs will vary. See specification table at the bottom of this page on estimated weight of the system and components.

LandMapper ERM-01 holiday sale - while supplies last!

We wish all our customers, friends, and collegues Merry Christmas, Happy New Year and wonderful holiday season!LandMapper is portable and scalable geophysical device

It has been a remarkable year for Landviser! We’ve completed several exciting projects with the focus on expanding capabilities of our LandMapper geophysical devices and helped many of our customers with their research. Our LandMapper geophysical devices have been gaining popularity around the globe. To extend our warmest Holiday wishes we are offering unprecidented discount of 20% on basic ERM-01 model from the current price of $1579. The new reduced price for ERM-01 of $1263 will be in effect until December 31, 2012 or while supplies last. Regular educational and dealers's discounts are still apply on the top of newly reduced price as stated in 

Current complete catalog of Landviser, LLC

To claim your ERM-01 now at a discounted price, email or call us (+1-609-412-0555) and mention promotion code 2012-12-ERM01. This offer is "first come, first serve" and is only available on pre-paid terms via credit card or wire transfer.Tax Deduction Info on www.Section179.Org!

Special Note for USA customers: Landviser's equipment and software qualify for tax deduction under Section 179. You still have time to purchase ERM-01, ERM-02 or RES2DINV/RES3DINV in 2012, before this deduction expires!

Landviser, LLC develops and sells portable handheld geophysical devices, Landmapper ERM-01 and ERM-02 for measuring electrical properties (electrical resistivity, conductivity, and potential)  in soils, plants and other semisolid and liquid media since 2003. This equipment is small, fully computer-integrated, and easy to use. It is very competitively priced and come handy many environmental, archaeological and agricultural applications, especially mapping and monitoring soil salinity and pollution. Information flyers can be downloaded from the links below:

More information on applications of both models is available in free publication in FastTIMES magazine:

Golovko, Larisa, Anatoly Pozdnyakov, and Antonina Pozdnyakova. “LandMapper ERM-02: Handheld Meter for Near-Surface Electrical Geophysical Surveys.” FastTIMES (EEGS) 15, no. 4 - Agriculture: A Budding Field in Geophysics (December 2010): 85–93. http://www.landviser.net/webfm_send/69

Местоположение

Landviser LLC Houston 29° 45' 36.6948" N, 95° 22' 9.804" W
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