Where Is the PFAS? Innovations in PFAS Detection and Characterization     

John Horst  Craig Divine  Joe Quinnan  Johnsie Lang  Erika Carter  Theresa Guillette  Vivek Pulikkal 《Ground Water Monitoring & Remediation》2022,42(1):13-23

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Correction: Guidelines and pitfalls of refraction microtremor surveys     

Louie  John N.  Pancha  Aasha  Kissane  B. 《Journal of Seismology》2022,26(4):583-584

Journal of Seismology -  相似文献   

Guidelines and pitfalls of refraction microtremor surveys     

Louie  John N.  Pancha  Aasha  Kissane  B. 《Journal of Seismology》2022,26(4):567-582

Journal of Seismology - The geotechnical industry has widely adopted the refraction microtremor shear-wave velocity measurement technique, which is accepted by building authorities for evaluation...  相似文献   

A review of inverse methods in seismic site characterization     

Gosselin  Jeremy M.  Dosso  Stan E.  Askan  Aysegul  Wathelet  Marc  Savvaidis  Alexandros  Cassidy  John F. 《Journal of Seismology》2022,26(4):781-821

Journal of Seismology - Seismic site characterization attempts to quantify seismic wave behavior at a specific location based on near-surface geophysical properties, for the purpose of mitigating...  相似文献   

The impact of land use and land cover changes on soil erosion in western Iran   总被引：1，自引：0，他引：1  

Eskandari Damaneh  Hadi  Khosravi  Hassan  Habashi  Khalil  Eskandari Damaneh  Hamed  Tiefenbacher  John P. 《Natural Hazards》2022,110(3):2185-2205

Natural Hazards - Analysis of long-term land use and land cover (LULC) changes requires up-to-date remotely sensed data to assess their effects on erosion. This is a particularly important...  相似文献   

Trimlines,blockfields and the vertical extent of the last ice sheet in southern Ireland          下载免费PDF全文

Colin K. Ballantyne  John O. Stone 《Boreas: An International Journal of Quaternary Research》2015,44(2):277-287

Trimlines separating glacially abraded lower slopes from blockfield‐covered summits on Irish mountains have traditionally been interpreted as representing the upper limit of the last ice sheet during the Last Glacial Maximum (LGM). Cosmogenic ¹⁰Be exposure ages obtained for samples from glacially deposited perched boulders resting on blockfield debris on the summit area of Slievenamon (721 m a.s.l.) in southern Ireland demonstrate emplacement by the last Irish Ice Sheet (IIS), implying preservation of the blockfield under cold‐based ice during the LGM, and supporting the view that trimlines throughout the British Isles represent former englacial thermal regime boundaries between a lower zone of warm‐based sliding ice and an upper zone of cold‐based ice. The youngest exposure age (22.6±1.1 or 21.0±0.9 ka, depending on the ¹⁰Be production rate employed) is statistically indistinguishable from the mean age (23.4±1.2 or 21.8±0.9 ka) obtained for two samples from ice‐abraded bedrock at high ground on Blackstairs Mountain, 51 km to the east, and with published cosmogenic ³⁶Cl ages. Collectively, these ages imply (i) early (24–21 ka) thinning of the last IIS and emergence of high ground in SE Ireland; (ii) relatively brief (1–3 ka) glacial occupation of southernmost Ireland during the LGM; (iii) decoupling of the Irish Sea Ice Stream and ice from the Irish midlands within a similar time frame; and (iv) that the southern fringe of Ireland was deglaciated before western and northern Ireland.  相似文献   

Critical Review of Thermal Conductivity Models for Unsaturated Soils   总被引：1，自引：0，他引：1  

Yi Dong  John S. McCartney  Ning Lu 《Geotechnical and Geological Engineering》2015,33(2):207-221

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A methodology to derive precise landslide displacement time series from continuous GPS observations in tectonically active and cold regions: a case study in Alaska   总被引：2，自引：1，他引：1  

Guoquan Wang  Yan Bao  Yanet Cuddus  Xueyi Jia  John Serna Jr.  Qi Jing 《Natural Hazards》2015,77(3):1939-1961

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A visibility-based assessment of tsunami evacuation signs in Seaside,Oregon     

Chris Lonergan  Nick Hedley  John J. Clague 《Natural Hazards》2015,76(1):41-61

Tsunami risk mitigation programs often include iconic evacuation signage to direct locals and visitors to safety during a tsunami event. This paper examines sign placement in Seaside, Oregon, from a visibility perspective. It leverages existing visibility analysis methodologies characterize the visibility of the community’s evacuation signage and reveals patterns in the viewable landscape. Additionally, we develop a topologically 3D approach to visibility analysis using raw LiDAR datasets. This applied work situates a discussion on existing patterns of visibility, how to improve existing signage placement, 2D and 3D representation of landscape, and the importance of visibility analysis. This work aims to stimulate discussion and development of hazard research that incorporates a visibility perspective.  相似文献   

Remote sensing-derived national land cover land use maps: a comparison for Malawi     

Barry Haack  John Kerkering 《国际地球制图》2015,30(3):270-292

Reliable land cover land use (LCLU) information, and change over time, is important for Green House Gas (GHG) reporting for climate change documentation. Four different organizations have independently created LCLU maps from 2010 satellite imagery for Malawi for GHG reporting. This analysis compares the procedures and results for those four activities. Four different classification methods were employed; traditional visual interpretation, segmentation and visual labelling, digital clustering with visual identification and supervised signature extraction with application of a decision rule followed by analyst editing. One effort did not report classification accuracy and the other three had very similar and excellent overall thematic accuracies ranging from 85 to 89%. However, despite these high thematic accuracies there were very significant differences in results. National percentages for forest ranged from 18.2 to 28.7% and cropland from 40.5 to 53.7%. These significant differences are concerns for both remote-sensing scientists and decision-makers in Malawi.  相似文献