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LandMapper ERM-02 - новый портативный прибор для измерения сопротивления, проводимости и электрического потенциала

***LandMapper ERM-02 снова в наличии! Свяжитесь с нами по адресу info@landviser.net или обратитесь в наш офис в Москве***

LandMapper ERM-02 является новейшим прибором среди выпускаемых по лицензии Landviser, LLC (Пенза, Россия). Этот портативный прибор LandMapper - field EC meter with lab accuracynew deviceизмеряет три важных электрических свойства в твердых, полутвердых и жидких средах: электрическое сопротивление (ER), электропроводности (EC), и электрического потенциала (ЕР).

Используя наиболее точный четырех-электродный принцип LandMapper ERM-02  измеряет ER или ЕС, быстро, без отбора почвенных образчцв, и экономически эффективно определить места с контрастными свойствами почв в пределах поля. Используя наш прибор перед тем как взять пробу почвы, можно значительно уменьшить количество требуемых образцов или разработать наиболее детальный план их отбора.

LandMapper ERM-02 измеряет электрическое сопротивление или электропроводность почв и похожих материалов для специального, неразрушающего картирования и мониторинга сельскохозяйственных угодий, садов лесов, парков и строительных участков. При этом четырех-электродный датчик помещают на поверхность почвы, а значение электрического сопротивления или электропроводности считывают с цифрового дисплея. Прибор измеряет электрическое сопротивление или электропроводность в поверхностном слое почвы от 2 см до 20 м, глубина задается путем выбора четырех-электродного датчиков разного размераой пробы.

LandMapper ERM-02 является наиболее универсальным устройством в серии LandMapper и позволяет не только измерить ER и ЕС с помощью искусственного электрического тока и четырех-электродного датчика, но и изучить естественные электрические поля в почвах (потенциалы самопроизвольной поляризации) и растениях (био-потенциалы) используя запатентованными неполяризующими электроды. Электрический баланс между почвой и растениями важен при мониторинге здоровья растений; градиент электрических потенциалов направляет движение воды и поглощение питательных веществ растениями. Мониторинг электрических потенциалов в растениях и почвах является передовой темой исследований в ведущих научных центрах мира.

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

AEMP-14 - Multi-frequency Electro-Magnetic Induction Sounding

Landviser, LLC is offering advanced equipment for multi-frequency electromagnetic sounding and profiling - AEMP-14 - manufactured by KB Electrometry Ltd in Novosibirsk, Russia.

Price of the system ordered through us is the same as listed on Nemfis.ru. Registered website users can view price of for the complete AEMP-14 system including field hand-held PDA, GPS, laptop with pre-loaded EM interpretation software and training videos in current catalog 

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.

ОЦЕНКА ОКУЛЬТУРЕННОСТИ ЛЕГКИХ ПОЧВ ГУМИДНОЙ ЗОНЫ ЕВРОПЕЙСКОЙ ЧАСТИ РОССИИ ЭЛЕКТРОФИЗИЧЕСКИМИ МЕТОДАМИ

ПОЗДНЯКОВ А.И., ЕЛИСЕЕВ П.И., ГОЛОВКО Л.А., ПОЗДНЯКОВ Л.А., ДУБРОВА М.С., МАКАРОВА Е.П.

Электрическое сопротивление  легких антропогенно-преобразованных почв  гумидной зоны - комплексный показатель, который в основном зависит от трех  базовых свойств, характеризующих твердую фазу почв – гранулометрического состава (содержания физической глины), содержания общего углерода и емкости катионного обмена.

Местоположение

Yahroma Valley Dmitrov, MOS
Russia
56° 23' 26.0808" N, 37° 20' 49.1712" E

Evaluating cultivation level of sandy soils in European Russia with electro-geophysical methods

Electrical resistivity vs cultivation degree of sandy soils Update: Full PDF of the paper is now available!

Electrical resistivity of cultivated sandy soils of humid areas is a complex characteristic based on three fundamental properties of soil matrix, such as soil texture, total organic matter (carbon content) and cation exchange capacity (CEC). Relationship of electrical resistivity (ER) with those properties has been approximated with exponential equation ER=a*exp(-b*x), where x is any of the properties above. The correlation coefficients for ER as function of CEC, texture, or organic matter were between 0.82 and 0.91 for the soils of Klin-Dmitrov watershed near Moscow and Kirov, which suggests their applicability for other humid areas. We present a new approach to approximate exponential relationship ER=a*exp(b*x) with a linear “piece-wise” function based on the age of cultivation for each field.This approach was used to develop management zones based on ER to separate uniform areas of similar organic matter, CEC and clay content. Those basic properties are the foundation of soil fertility in humid areas. They influence biomass and bioactivity of soil microorganisms, thus the exponential relationship between ER and soil microorganisms was also observed. The approach based of electrical resistivity or conductivity was used to evaluate fertility and degree of cultivation of sandy soils in humid areas and for detail soil mapping and delineation of management zones in adaptive precision agriculture. The field and laboratory electrical geophysical methods are recommended for quick and accurate soil mapping and management in sustainable farming.

*at SAGEEP 2013, March 17-21 in Denver, CO, Larisa Golovko, Ph.D. will also present "Basic Theory of Measuring Electrical Resistivity, Conductivity and Self-Potential in Soils and Plants" with LandMapper ERM-02 and other commercially available geophysical equipment at post-conference workshop "Agricultural Geophysics: Theory and Methods".
SAGEEP 2013 logo
Cite this presentation as:

Anatoly Pozdnyakov, P.I. Eliseev, Larisa Golovko, Lev A. Pozdnyakov, Maria S. Dubrova, and E.P. Makarova. “Evaluating Cultivation Level of Sandy Soils in European Russia with Electro-geophysical Methods.” In New Views of the Earth. Denver, CO: Environmental and Engineering Geophysical Society, 2013. http://www.eegs.org/AnnualMeetingSAGEEP/SAGEEP2013/SessionsAbstracts.aspx

 

Locations

Denver 39° 44' 15.2412" N, 104° 59' 4.9848" W
Klin, MOS 56° 19' 18.5304" N, 36° 42' 30.8772" E
KIR 58° 36' 16.8984" N, 49° 39' 58.5504" E

Low-cost GPS logger

I had tested a small gadget called GPS logger from Columbus Visiontac. Complete product name-description is:

Product name

Product Features

Where to buy

 

Columbus V-990 GPS Data Logger (microSD Slot, Voice Recording, 66 ch. MTK)

 

  • A good data logger still needs practical track processing software. Time Album attached to V-990 can help you freely process track.Time Album has various personalized settings.
  • It can export track according to distance or time, select metric or imperial unit or record intervals, and support various operating systems including WINDOWS, MAC OS and LINUX.
  • V-990 adopts the currently most advanced and stable MTKII 3329 super single chip, with only 35s and 1s required respectively for cold start and warm start.
  • It can realize rapid and stable positioning under various environments including urban district and suburb.
  • The built-in high-capacity Li-polymer battery can allow you to use the device all day (24hrs).

Columbus V-900 Bluetooth GPS Data Logger (microSD , Voice Tag for POI, Driverless, Push to Log, 25 millions waypoints*, XP / Vista/ Linux / Mac OSX Compatible)

  • 51 channels MTK chipset with enhanced positioning system technology (up to 1.5m accuracy with EPS Technology
  • Voice-Tag function with built-in microphone allows adding live voice labels to any waypoint
  • MicroSD Slot with support up to 2GB* capacity (about 25,000,000 waypoints, more than 2 years) *NOTE: 1GB microSD card is optional in the package
  • Push-To-Log (POI anchor key) enables you to mark a POI at any time
  • Unique SPY mode allows continuous standby logging of more than one month

Locations

Seatle 47° 36' 22.356" N, 122° 19' 55.4556" W
32° 19' 45.2136" N, 142° 1' 52.5" E

Cenozoic Shale Formations as a New Frontier Area - detecting shallow natural gas fields

methane emission on peat bogGuest post by Dr. Leonid Anisimov, Principal Scientist of Lukoil-Engineering, Volgograd, Russia. VolgogradNIPImorneft – scientific center of the LUKOIL Oil Company for the South Volga, Caspian Region and Middle East.

Shalow gas accumulations in shale deposits are unconventional energy resources. However those are hazardous objects for drilling especially in the offshore areas.
Seismic is a principal instrument to detect shallow gas pockets but electromagnetic methods may have advantage. The presentation below shows principal geography and techniques for detection and development of shale gas fields. A pilot project of Landviser LLC in using VES for monitoring accumulation and release of methan in peat bogs of Eastern Siberia is attached.

Locations

Houston 29° 45' 36.6948" N, 95° 22' 9.804" W
56° 52' 40.7964" N, 60° 55' 48.6336" E
43° 46' 4.5048" N, 11° 15' 8.5644" E

Quick Estimation of Salinity in Field Soils and Irrigation Water with LandMapper ERM-02

ec mapping with Landmapper on dead rice field after hurracaine IkeSoil salinity is routinely evaluated in the labs from electrical conductivity of liquid soil saturation extract (ECe). The resulted total salinity is reported either directly in conductivity units (dS/m) or converted to TDS (total dissolved solids) concentration in ppm (parts per million) using formula: 1 dS/m = 1 mS/cm = 1 mmho/cm = 640 ppm = 640 mg/L= 0.64 g/L=0.064%

But now EC of soil and waters can be measured directly in the field using highly accurate method of four-electrode probe and Landmapper ERM-02 measuring device. Best of all, probes can be build to sense different soil layers down to 30 ft! Probes are simple and inexpensive to make from common materials available at any hardware store.

For irrigation water and soil solutions: To measure ECw just put 4-electrode probe of Landmapper used for mapping into a ditch, canal, or other water source. Make sure that all 4-electrodes are in contact with water. Take a reading in EC (conductivity) mode. Display will read (example):  
K0*C= 150m  - which indicates milli Siemens (mS/m)
To convert to dS/m, divide display number by 100, i.e. 150 mS/m=1.5 dS/m.

Soil Science

Applications of electrical geophysical methods in classic Soil Science (Pedology, Soil Genesis and Classification) - browse the links and maps on this page to find out more...

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