The effect of changing environmental conditions on microwave signatures of forest ecosystems: preliminary results of the March 1988 Alaskan aircraft SAR experiment

1990 ◽  
Vol 11 (7) ◽  
pp. 1119-1144 ◽  
Author(s):  
JOBEA WAY ◽  
JACK PARIS ◽  
ERIC KASISCHKE ◽  
CHARLES SLAUGHTER ◽  
LESLIE VIERECK ◽  
...  
Keyword(s):  
Environmental Conditions ◽  
Forest Ecosystems ◽  
Preliminary Results ◽  
Microwave Signatures

Innovative on-site infrasound metrology conducted in 2019 and 2020

2021 ◽  
Author(s):  
stephane denis ◽  
paul vincent ◽  
Rouille Guillaume
Keyword(s):  
Environmental Conditions ◽  
Medium Term ◽  
Good Correspondence ◽  
Preliminary Results ◽  
Innovative System ◽  
Metrology System ◽  
Term Objective

<p>In order to improve the confidence in the results of measurements carried out in the field, on-site metrology is a key step. With the medium-term objective of being able to deploy a portable metrology system on different infrasound stations, CEA-DAM has tested an innovative system for calibrating its infrasound sensors. The first tests were conducted in November 2019 and September 2020 as part of the installation and certification of the IMS IS25 infrasound station in Guadeloupe. A total of 20 microbarometers were qualified on site.<br>We present the equipments deployed, the methods used and the results of the measurements carried out. It appears that the preliminary results show a very good correspondence between the measurements performed in the field, under particular environmental conditions, and the measurements performed in the metrology laboratory. The method will be confronted to the metrology community within the framework of the European Infra-AUV project in 2022.</p>

Measuring Radon and Thoron Levels in Sri Lanka

2013 ◽  
Vol 718-720 ◽  
pp. 721-724
Author(s):  
Deepal Subasinghe Nalaka ◽  
Mahakumara Prasad ◽  
Thusitha B. Nimalsiri ◽  
Nuwan B. Suriyaarchchi ◽  
Takeshi Iimoto ◽  
...  
Keyword(s):  
Sri Lanka ◽  
Environmental Conditions ◽  
In Situ Measurements ◽  
Physical Factors ◽  
Preliminary Results ◽  
Radon Measurements ◽  
First Time

For the first time in Sri Lanka, an attempt was made to measure the outdoor radon levels using CR 39 type passive radon detectors. Preliminary results indicate that in Sri Lanka, 220Rn isotope is more abundance than 222Rn isotope. These results were also confirmed by in-situ measurements. Sri Lanka has one of the highest 220Rn values in the region. It was also noted that environmental conditions and other physical factors have a significant effect on the outdoor radon measurements using passive discriminative detectors.

Functional traits of epiphytic lichens as potential indicators of environmental conditions in forest ecosystems

2012 ◽  
Vol 18 ◽  
pp. 413-420 ◽  
Author(s):  
Paolo Giordani ◽  
Giorgio Brunialti ◽  
Giovanni Bacaro ◽  
Juri Nascimbene
Keyword(s):  
Functional Traits ◽  
Environmental Conditions ◽  
Forest Ecosystems ◽  
Epiphytic Lichens

scholarly journals Tara Pacific Expedition’s Atmospheric Measurements of Marine Aerosols across the Atlantic and Pacific Oceans: Overview and Preliminary Results

2020 ◽  
Vol 101 (5) ◽  
pp. E536-E554 ◽  
Author(s):  
J. M. Flores ◽  
G. Bourdin ◽  
O. Altaratz ◽  
M. Trainic ◽  
N. Lang-Yona ◽  
...  
Keyword(s):  
Environmental Conditions ◽  
Chemical Properties ◽  
Number Concentration ◽  
Marine Atmosphere ◽  
Marine Aerosol ◽  
Marine Aerosols ◽  
Atmospheric Measurements ◽  
Preliminary Results ◽  
Production Mechanisms

Abstract Marine aerosols play a significant role in the global radiative budget, in clouds’ processes, and in the chemistry of the marine atmosphere. There is a critical need to better understand their production mechanisms, composition, chemical properties, and the contribution of ocean-derived biogenic matter to their mass and number concentration. Here we present an overview of a new dataset of in situ measurements of marine aerosols conducted over the 2.5-yr Tara Pacific Expedition over 110,000 km across the Atlantic and Pacific Oceans. Preliminary results are presented here to describe the new dataset that will be built using this novel set of measurements. It will characterize marine aerosols properties in detail and will open a new window to study the marine aerosol link to the water properties and environmental conditions.

scholarly journals Impacts of Climate Change on Tree Physiology and Responses of Forest Ecosystems

Forests ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1728
Author(s):  
Mariangela N. Fotelli
Keyword(s):  
Climate Change ◽  
Environmental Conditions ◽  
Forest Ecosystems ◽  
Forest Trees ◽  
Tree Physiology ◽  
Changing Climate ◽  
Impacts Of Climate Change

In a changing climate, forest trees have to deal with a range of altered environmental conditions [...]

Taphos-m, a Taphonomical Research using Sus scrofa domestica Model in an Experimental Facility

2017 ◽  
Vol 1 (1) ◽  
pp. 33-48
Author(s):  
A. Gutiérrez ◽  
D. Nociarová ◽  
A. Malgosa ◽  
N. Armentano
Keyword(s):  
Environmental Conditions ◽  
Sus Scrofa ◽  
Experimental Archaeology ◽  
Cortical Surface ◽  
Experimental Facility ◽  
Domestic Pig ◽  
Preliminary Results ◽  
Different Types ◽  
Sus Scrofa Domestica

Taphos-m is an experimental archaeology and anthropology project, created in 2011, with the objective of knowing what taphonomic agents and processes could be responsible for the observable effects in the field. The first stage of the project consisted of the burial of 26 domestic pig carcases under different environmental conditions and burial types; the antemortem information about the animals was also compiled. This paper presents the preliminary results obtained during the first three years since the last burial took place. The evolution of the funerary structures was evaluated and four bodies were exhumed. The antemortem data and the information obtained from these four exhumations, have helped in understanding of the cadaveric state of the bodies and the anatomical disassociation of bones buried in different types of funerary structures. The preservation and condition of the cortical surface of the bones and the presence or absence of fragmentation were described too. The results presented here allow an understanding of the evolution of the characteristics of the facility and the differences among the pig remains. Opening all funerary structures is considered necessary in order to obtain further conclusions.

scholarly journals Culturally modified trees and forest structure at a Kawésqar ancient settlement at Río Batchelor, western Patagonia

Human Ecology ◽  
2020 ◽  
Vol 48 (5) ◽  
pp. 585-597
Author(s):  
Lars Östlund ◽  
Gabriel Zegers ◽  
Benjamin Cáceres Murrie ◽  
Macarena Fernández ◽  
Robert Carracedo-Recasens ◽  
...  
Keyword(s):  
Land Use ◽  
Indigenous People ◽  
Forest Structure ◽  
Environmental Conditions ◽  
Forest Ecosystems ◽  
Temporal Information ◽  
Culturally Modified Trees ◽  
Settlement Site ◽  
Past Land Use ◽  
Indigenous Land

AbstractIndigenous land use occurring on temporal scales over centuries or millennia shapes forests in specific ways and influences the dynamics of forest ecosystems. It is challenging to study such land use, but analysis of “culturally modified trees” (CMTs) can give precise spatial and temporal information on past land use by indigenous people. The aim of this study was to increase our knowledge of indigenous use of land and resources in Nothofagus forests by identifying CMTs and analyzing the forest structure dynamics in an ancient Kawésqar settlement site in western Patagonia. Our results show that there are CMTs at Río Batchelor and that the forest structure varies significantly within the site, indicating that Kawésqar people altered the forest by extracting various resources. We conclude that CMT studies have great potential in Nothofagus forests in southernmost America, but also face specific challenges due to environmental conditions and lack of corroborating historical information.

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