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L’expansion séculaire des forêts françaises est dominée par l’accroissement du stock sur pied et ne sature pas dans le temps / Anaïs Denardou-Tisserand in Revue forestière française, vol 69 n° 4-5 (2017)
Titre : L’expansion séculaire des forêts françaises est dominée par l’accroissement du stock sur pied et ne sature pas dans le temps Titre original : The centuries-long expansion of French forests, driven prevalently by increased growing stock, shows no sign of saturation Type de document : Article/Communication Auteurs : Anaïs Denardou-Tisserand Année de publication : 2017 Projets : ARBRE / AgroParisTech (2007 -) Article en page(s) : pp 319 - 339 Note générale : bibliographie Langues : Français (fre) Descripteur : [Termes IGN] forêt
[Termes IGN] France (végétation)
[Termes IGN] inventaire forestier national (données France)
[Termes IGN] Massif central (France)
[Termes IGN] variabilité
[Termes IGN] variation séculaire
[Vedettes matières IGN] Inventaire forestierRésumé : (auteur) The expansion of French forests both in surface area and growing stock is explored based on National Forest Inventory data and Daubrée’s statistics (1908). The author studied their geographic variability under various ownership schemes (private, state or other regulated public forests) and depending on their composition (hardwood/softwood). Between 1908 and 2010, the increase in surface area was 5.1 million hectares (+ 50 %) with the fastest expansion rate in the Massif Central, and hardwoods gaining ground twice as fast as softwoods, although their overall proportions remained unchanged. Between 1975 and 2010, growing stock (+ 59 %, + 930 million cubic metres) developed three times more quickly than surface area but varied considerably between geographic locations: with area taking the lead in southern France and Brittany while in the Massif Central growing stock was preeminent, pointing to a certain continuity in relation to previous expansion of forest area. Over the same period, private forests and other regulated public forests experienced similar relative surface area variations (+ 20 %), but private forests accumulated twice as much growing stock (+ 80 %) as public forests. Between 1987 and 1994, private deciduous forests increased the most (+ 280 000 ha and + 105 million cubic metres), followed by private coniferous forests (+ 60 000 ha and + 63 million cubic metres). In the recent decade (2006-2015), increases in areas and stocks have continued at a pace of respectively 120 000 ha/year and 44 million cubic metres suggesting that this trend will continue over coming decades. Numéro de notice : A2017-884 Affiliation des auteurs : LIF+Ext (2012-2019) Thématique : FORET Nature : Article nature-HAL : ArtAvecCL-RevueNat DOI : 10.4267/2042/67864 Date de publication en ligne : 12/06/2018 En ligne : https://doi.org/10.4267/2042/67864 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=91834
in Revue forestière française > vol 69 n° 4-5 (2017) . - pp 319 - 339[article]
Titre : Les mouvements séculaires du géocentre, le réchauffement climatique et l'ITRF Type de document : Article/Communication Auteurs : Laurent Métivier Année de publication : 2011 Article en page(s) : pp 44 - 48 Note générale : Bibliographie Langues : Français (fre) Descripteur : [Vedettes matières IGN] Géodésie physique
[Termes IGN] changement climatique
[Termes IGN] géocentre
[Termes IGN] International Terrestrial Reference Frame
[Termes IGN] International Terrestrial Reference System
[Termes IGN] variation séculaireRésumé : (Auteur) À l'intérieur et à la surface de la Terre, les déplacements de masses peuvent engendrer un déplacement du Centre de masse (CM) du « système Terre » (incluant les océans et l'atmosphère) par rapport au centre géométrique de la Terre solide ou Centre de figure (CF), et inversement. [...] Nous n'avions jusque récemment qu'une très vague idée de l'évolution temporelle naturelle que devrait présenter l'origine de l'ITRS. Il faut dire que très peu d'études scientifiques se sont intéressées au mouvement "séculaire" du géocentre. Nous allons voir ici que ce mouvement, bien que n'expliquant pas complètement l'écart entre les différentes réalisations de l'ITRS, est probablement loin d'être négligeable, et qu'une des sources prépondérants de ce mouvement est le changement climatique récent. Numéro de notice : A2011-139 Affiliation des auteurs : LAREG (1991-2011) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtSansCL DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=30918
in Bulletin d'information scientifique et technique de l'IGN > n° 77 (avril 2011) . - pp 44 - 48[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 015-2011011 RAB Revue Centre de documentation En réserve L003 Disponible Documents numériques
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Titre : Understanding sea-level rise and variability Type de document : Monographie Auteurs : J.A. Church, Éditeur scientifique ; Philip L. Woodworth, Éditeur scientifique ; T. Aarup, Éditeur scientifique ; et al., Auteur Editeur : Chichester : Wiley-Blackwell Année de publication : 2010 Importance : 428 p. Format : 19 x 25 cm ISBN/ISSN/EAN : 978-1-4443-3451-7 Langues : Anglais (eng) Descripteur : [Termes IGN] changement climatique
[Termes IGN] niveau de la mer
[Termes IGN] océanographie dynamique
[Termes IGN] repère de référence
[Termes IGN] salinité
[Termes IGN] série temporelle
[Termes IGN] surcharge océanique
[Termes IGN] variation séculaire
[Vedettes matières IGN] AltimétrieIndex. décimale : 30.52 Marégraphie et niveau moyen des mers Résumé : (Auteur) Sea-level rise is one of the most obvious manifestations of anthropogenic climate change, and it directly threatens coasts as a result of increased erosion, more frequent storm-surge flooding and loss of habitat. However, the wide range of uncertainty in projections of global and regional sea-level rise presented by the Intergovernmental Panel on Climate Change is a significant hindrance in agreeing to appropriate mitigation levels and in planning adaptation measures. A workshop in June 2006, organized under the auspices of the World Climate Research Programme (WCRP) to address this issue, led to publication of this book. Understanding Sea-Level Rise and Variability identifies the major impacts of sea-level rise, presents up-to-date assessments of past sea-level change, thoroughly explores all of the factors contributing to sea-level rise, and explores how sea-level extreme events might change. It identifies what is known in each area and what research and observations are required to reduce the uncertainties in our understanding of sea-level rise so that more reliable future projections can be made. A synthesis of findings provides a concise summary of sea-level rise and its impacts on society. The book is for everyone interested in sea-level rise and its impacts, including policy makers, research funders, scientists, students, coastal managers and engineers. Note de contenu : Foreword
1 Introduction
2 Impacts of and Responses to Sea-Level Rise
2.1 Introduction
2.2 Climate Change and Global/Relative Sea-Level Rise
2.3 Sea-Level Rise and Resulting Impacts
2.4 Framework and Methods for the Analysis of Sea-Level-Rise Impacts
2.5 Recent Impacts of Sea Level Rise
2.6 Future Impacts of Sea-Level Rise
2.7 Responding to Sea-Level Rise
2.8 Next Steps
2.9 Concluding Remarks Acknowledgments - References
3 A First-Order Assessment of the Impact of Long-Term Trends in Extreme Sea Levels on Offshore Structures and Coastal Refineries
3.1 Introduction
3.2 Design Considerations
3.3 Impact of Long-Term Trends in Extreme Sea Levels
3.4 Evaluating the Economic Impact57
3.5 Conclusions - References
4 Paleoenvironmental Records, Geophysical Modeling, and Reconstruction of Sea-Level Trends and Variability on Centennial and Longer Timescales
4.1 Introduction
4.2 Past Sea-Level Changes
4.3 Sea-Level Indicators
4.4 Geophysical Modeling of Variability in Relative Sea-Level History
4.5 Regional Case Studies
4.6 Discussion and Conclusions Acknowledgments References
5 Modern Sea-Level-Change Estimates
5.1 Introduction
5.2 Estimates from Proxy Sea-Level Records
5.3 Estimate of Global Sea-Level Change from Tide Gauges
5.4 Estimates of Global Sea-Level Change- from Satellite Altimetry
5.5 Recommendations - Acknowledgments - References
6 Ocean Temperature and Salinity Contributions to Global and Regional Sea-Level Change
6.1 Introduction
6.2 Direct Estimates of Steric Sea-Level Rise
6.5 Estimating Steric Sea-Level Change Using Ocean Syntheses
6.4 Inferring Steric Sea Level from Tine Variable Gravity and Sea Level
6.5 Modeling Steric Sea-Level Rise
6.6 Conclusions and Recommendations - Acknowledgments - References
7 Cryospheric Contributions to Sea Level Rise and Variability
7.1 Introduction
7.2 Mass-Balance Techniques
7.3 lce Sheet Mass Balance
7.4 Mass Balance of Glaciers and lee Gaps
7.5 Glacier, lce-Cap, and Ice Sheet Modeling
7.6 Summary and Recommendations - References
8 Terrestrial Water-Storage Contributions to Sea-Level Rise and Variability
8.1 Introduction
8.2 Analysis Tools
8.3 Climate-Driven Changes of Terrestrial Water Storage
8.4 Direct Anthropogenic Changes of Terrestrial Water Storage
8.3 Synthesis
8.6 Recommendations - References
9 Geodetic Observations and Global Reference Frame Contributions to Understanding Sea-Level Rise and Variability
9.1 Introduction
9.2 Global and Regional Reference Systems
9.3 Linking GPS to Tide Gauges and Title Gauge Benchmarks
9.4 Recommendations for Geodetic Observations - Acknowledgments - References
10 Surface Mass Loading on a Dynamic Earth: Complexity and Contamination in the Geodetic Analysis of Global Sea Level Trends
10.1 Introduction
10.2 Glacial Isostatic Adjustment
10.3 Sea Level, Sea Surface, and the Geoid
10.4 Rapid Melting and Sea-Level Fingerprints
10.5 Great Earthquakes
10.6 Final Remarks Acknowledgments - References
11 Past and Future Changes in Extreme Sea Levels and Waves
11.1 Introduction
11.2 Evidence for Changes in Extreme Sea Levels and Waves in the Recent Past
11.3 Mid-Latitude and Tropical Storms: Changes in the Atmospheric Drivers of Extreme Sea Level
11.4 Future Extreme Water Levels
11.5 Future Research Needs
11.6 Conclusions Acknowledgments - References
12 Observing Systems Needed to Address Sea-Level Rise and Variability
12.1 Introduction
12.2 Sustained, Systematic Observing Systems (Existing Capabilities)
12.3 Development of Improved Observing Systems (New Capabilities)
12.4 Summary - References
13 Sea Level Rise and Variability: Synthesis and Outlook for the Future
13.1 Historical Sea-Level Change
13.2 Why is Sea Level Rising?
13.3 The Regional Distribution of Sea-Level Rise
13.4 Projections of Sea-Level Rise for the 21st Century and Beyond
13.5 Changes in Extreme Events
13.6 Sea Level and Society - ReferencesNuméro de notice : 14185 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Recueil / ouvrage collectif Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=40507
Titre : IERS analysis campaign to investigate motions of the geocenter Type de document : Monographie Auteurs : Jim Ray, Éditeur scientifique Editeur : Paris, Meudon et Nançay : Observatoire de Paris Année de publication : 1999 Collection : IERS Technical note num. 25 Importance : 121 p. Format : 21 x 30 cm Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique
[Termes IGN] données DORIS
[Termes IGN] données GPS
[Termes IGN] données TLS (télémétrie)
[Termes IGN] géocentre
[Termes IGN] série temporelle
[Termes IGN] variation séculaireIndex. décimale : 30.40 Géodésie physique Numéro de notice : 14529 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Recueil / ouvrage collectif En ligne : http://www.iers.org/nn_11216/IERS/EN/Publications/TechnicalNotes/tn25.html Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=40576
- Monitoring geocenter and scale variations using Doris data: monthly and weekly comparisons toward ITRF references / Pascal Willis (1999)
- GPS, DORIS and SLR combined geocenter motion from reference frame time series analysis / Patrick Sillard (1999)
- Synthesis of submitted geocenter time series / Claude Boucher (1999)
Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 14529-01 30.40 Livre Centre de documentation Géodésie Disponible Documents numériques
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14529_iers-tn25.pdfAdobe Acrobat PDF
Titre : IGS-PSMSL workshop on methods for monitoring sea level : GPS and tide gauge, benchmark monitoring and GPS altimeter calibration, proceedings, March 17-18, 1997, Pasadena, California, USA Type de document : Actes de congrès Auteurs : Ruth E. Neilan, Éditeur scientifique ; P. Van Scoy, Éditeur scientifique ; International GPS service for geodynamics, Auteur ; Philip L. Woodworth, Éditeur scientifique Editeur : Pasadena : Jet Propulsion Laboratory JPL Année de publication : 1998 Conférence : IGS - PSMSL 1997, workshop on methods for monitoring sea level, GPS and tide gauge, benchmark monitoring and GPS altimeter calibration 17/03/1997 18/03/1997 Pasadena Californie - Etats-Unis Importance : 202 p. Format : 21 x 30 cm Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] données marégraphiques
[Termes IGN] étalonnage d'instrument
[Termes IGN] marégraphe
[Termes IGN] niveau moyen des mers
[Termes IGN] variation séculaire
[Termes IGN] variation temporelle
[Vedettes matières IGN] AltimétrieRésumé : (Auteur) These are the proceedings of the first joint workshop between the scientific communities of the Permanent Service for Mean Sea Level (PSMSL) and the International GPS Service (IGS) regarding applications of the Global Positioning System (GPS) to monitoring sea level change. Two applications were highlighted: 1) monitoring and interpretation of tide gauge benchmark motion through collocation measurements of GPS and, 2) collocation of GPS at island and coastal tide gauges to calibrate orbiting altimeter missions (e.g., TOPEX/Poseidon, JASON, etc.). The workshop covered the technologies, science and engineering issues, practical experiences, data management, and analysis. Summary recommendations from the final joint session are included. Note de contenu : Executive Summary / R. Neilan (IGS), P. Woodworth (PSMSL)
Summary Recommendations: Workshop on Methods for Monitoring Sea Level
Session 1: Workshop Objectives and Science Questions
Co-chairs: P. Woodworth (PSMSL), R. Neilan (JPL)
Introduction to the Workshop on Methods for Monitoring Sea Level: GPS and Tide Gauge Benchmark Monitoring, GPS Altimeter Calibration / P.L. Woodworth (PSMSL)
Session 2: The Measurements - An Introduction
Co-chairs: G. Mitchum (Univ. S. Florida), M. Watkins (JPL)
Summary of Session 2 / G. Mitchum (Univ. S. Florida), M. Watkins (JPL)
An Overview of Tide Gauge Measurements / G.T. Mitchum (Univ. S. Florida)
The Contribution of Satellite Altimetry to Measuring Long-Term Sea Level Change / R.S. Nerem (Univ. Texas, Austin)
Session 3: Measuring Long-Term Sea Level Change
Co-chairs: G. Blewitt (Univ. Newcastle upon Tyne), S. Nerem (Univ. Texas, Austin)
Summary of Session 3 / G. Blewitt (Univ. Newcastle upon Tyne)
A Tide Gauge Network for Altimeter Calibration / G.T. Mitchum (Univ. S. Florida)
The Need for GPS to Provide Information on Vertical Land Movements at Tide Gauges with Long Records / P.L. Woodworm (PSMSL)
Sustainable Geodetic Monitoring of the Natural Environment Using the IGS / G. Blewitt, P. Davies, T. Gregorius, R. Kawar, U. Sanli (Univ. Newcastle upon Tyne)
Session 4: Practical Experience and Considerations: Projects Past and Planned
Co-chairs: T. Baker (POL), S. Zerbini (Univ. Bologna)
Summary of Session 4 / T.F. Baker (POL), S. Zerbini (Univ. Bologna)
The SELF II Project / S. Zerbini (Univ. Bologna)
Monitoring Vertical Land Movements at Tide Gauges in the UK / V. Ashkenazi, R.M. Bingley, A.M. Dodson, N.T. Penna (Univ. Nottingham); T.F. Baker (POL)
A GPS Network for Monitoring Absolute Sea Level in the Chesapeake Bay: BAYONET / R.S. Nerem (Univ. Texas, Austin), T.M. vanDam, M.S. Schenewerk (NOAA)
Precise Sea Surface Measurements Using DGPS Buoys / M. Parke (Ohio State Univ.), J. Blaha (GFZ), C.K. Shum (Ohio State Univ.)
BIFROST Project: Three Years of Continuous GPS Observations / J.M. Johansson, H.G. Scherneck (Onsala Space Obs.); M. Vermeer, H. Koivula, M. Poutanen (Finnish Geodetic Inst.); J.L. Davis (Harvard Univ.); J.X. Mitrovica (Univ. Toronto)
The Applicability of CORS for Tide Gauge Monitoring / M. Schenewerk, T. vanDam, N. Weston (NOAA)
Land Uplift/Subsidence as Inferred from Geodetic Surveys in the Southwestern Pacific Islands / S. Turner (NTF)
Geodetic Control of Tide Gauges in the Antarctic and Subantarctic / R.M.V. Summerson (NRIC), H. Brolsma (Australian Antarctic Div.j, R. Govind (AUSLIG), J. Hammat (NTF)
The Baltic Sea Level Project - History, Present and Future / J. Kakkuri, M. Poutanen (FGI); J. Zielinski (Space Res. Inst., Warsaw)
European Vertical GPS Reference Network (EUVN) - Concept, Status and Plans / J. Adam (Technical Univ. Budapest), W. Gurtner (Univ. Bern), B.G. Hars (Statens Kartuerk, Norway), J. Ihde, W. Schluter (IFAG), G. Woppelman (Inst. Geographique National, France)
Monitoring Tide Gauges Using Different GPS Strategies and Experiment Designs / D.U. Sanli, G. Blewitt (Univ. Newcastle upon Tyne)
Variations in Sea Level Change Along the Cascadia Margin: Coastal Hazard, Earthquake Hazard and Geodynamics / M.M. Miller, D. Johnson (Centra! WA Univ.); R. Weldon, R. Palmer (Univ. Oregon)
Session 5: Data Handling
Co-chairs: C. Noll (GSFC [IGS Global Data Center]), M. Merrifield (Univ. Hawaii, Manoa)
Summary of Session 5 / C.E. Noll (GSFC), M. Merrifield (Univ. Hawaii, Manoa)
Flow of GPS Data and Products for the IGS / C.E. Noll (GSFC)
Sea Level Data Flow / M.A. Merrifield (Univ. Hawaii, Manoa)Numéro de notice : 14476 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Actes Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=34665 Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 14476-01 CG.97 Livre Centre de documentation Congrès Disponible Aufbereitung und Nutzung von Pegelmessungen für geodätische und geodynamische Zielstellungen / G. Liebsch (1997)
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PermalinkProceedings of Symposium on Earth's gravitational field and secular variations in position / R.S. Mather (1973)
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