Neil F Glasser
Datos Biográficos
| ID | 6016931 |
|---|---|
| NOMBRE | Neil F Glasser |
| NOMBRES | Neil F |
| APELLIDO | Glasser |
| FIRMA | GLASSER N F |
| AFILIACIONES | Aberystwyth University |
| ORCID | 0000-0002-8245-2670 |
| VERIFICADO | Sí |
| TOTAL DE OBRAS | 20 |
| TOTAL DE CITAS | 16 |
| TOTAL COMO AUTOR | 20 |
| TOTAL COMO EDITOR | 0 |
| PRIMER AÑO DE PUBLICACIÓN | 2002 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 2024 |
| ÍNDICE H | 3 |
The glacial geomorphology of the Cordillera Darwin Icefield, Tierra del Fuego, southernmost South America
The Cordillera Darwin Icefield (CDI) has experienced widespread retreat since the Little Ice Age (LIA, ∼1870 AD). Prior to this, information on outlet glacier dynamics is limited as there are few terrestrial observations and little mapped deglacial evidence, limiting our understanding of CDI dynamics on Holocene centennial to millennial timescales. Here we present a glacial geomorphological map of terrestrial landforms and features for the CDI an…
Geomorphology of Ulu Peninsula, James Ross Island, Antarctica
This study presents a 1:25,000 geomorphological map of the northern sector of Ulu Peninsula, James Ross Island, Antarctic Peninsula. The map covers an area of c. 250 km 2 , and documents the landforms and surficial sediments of one of the largest ice-free areas in Antarctica, based on remote sensing and field-based mapping. The large-scale landscape features are determined by the underlying Cretaceous sedimentary and Neogene volcanic geology, whi…
The glacial geomorphology of western Dronning Maud Land, Antarctica
Reconstructing the response of present-day ice sheets to past global climate change is important for constraining and refining the numerical models which forecast future contributions of these ice sheets to sea-level change. Mapping landforms is an essential step in reconstructing glacial histories. Here we present a new map of glacial landforms and deposits on nunataks in western Dronning Maud Land, Antarctica. Nunataks are mountains or ridges t…
Glacier protection laws
Changes in glacier surface cover on Baltoro glacier, Karakoram, north Pakistan, 2001–2012
The presence of supraglacial debris on glaciers in the Himalaya-Karakoram affects the ablation rate of these glaciers and their response to climatic change. To understand how supraglacial debris distribution and associated surface features vary spatially and temporally, geomorphological mapping was undertaken on Baltoro Glacier, Karakoram, for three time-separated images between 2001–2012. Debris is supplied to the glacier system through frequent…
Rapid thinning of the Welsh Ice Cap at 20–19 ka Based on 10 Be Ages
New 10 Be ages from the summits of three mountain areas of North Wales reveal a very similar exposure timing as the Welsh Ice Cap thinned after the global Last Glacial Maximum. Eight bedrock and one boulder sample gave a combined arithmetic mean exposure age of 19.08 ± 0.80 ka (4.2%, 1σ). Similar exposure ages over a 320 m vertical range (824 to 581 m altitude) show that ice cap thinning was very rapid and spatially uniform. Using the same produc…
Structural glaciology of Austre Brøggerbreen, northwest Svalbard
Structural glaciological maps can be used to study the structural evolution and past dynamics of glaciers. The map described here documents the glacier-wide structural characteristics of Austre Brøggerbreen, a c. 12 km2 predominantly cold-based valley glacier in northwest Svalbard. The structural map reveals that the glacier is dominated by deep-penetrating fractures that are now relict (crevasse traces). These structures indicate that, despite b…
Glaciological and geomorphological map of Glacier Noir and Glacier Blanc, French Alps
This paper presents and describes a glaciological and geomorphological map of Glacier Noir and Glacier Blanc, French Alps. Glacier Noir is a debris-covered glacier and is adjacent to Glacier Blanc, a clean-ice (debris-free) glacier. The glaciological and geomorphological evolution of Glacier Blanc is well known, but the evolution of Glacier Noir is poorly understood, as is the case for many debris-covered glaciers globally, despite their importan…
The structural glaciology of southwest Antarctic Peninsula Ice Shelves (ca. 2010)
The Antarctic Peninsula has recently seen a rapid breakup of its peripheral ice shelves, attributed to atmospheric and oceanic warming in the region. Previous work has illustrated that the final breakup mechanisms are often controlled by the structural glaciology of the ice shelf, and thus understanding the structure of the remaining ‘stable’ ice shelves is of fundamental importance to assess their future response to continued environmental chang…
Little Ice Age glaciers in Britain
It is widely believed that the last glaciers in the British Isles disappeared at the end of the Younger Dryas stadial (12.9–11.7 cal. kyr BP). Here, we use a glacier–climate model driven by data from local weather stations to show for the first time that glaciers developed during the Little Ice Age (LIA) in the Cairngorm Mountains. Our model is forced from contemporary conditions by a realistic difference in mean annual air temperature of −1.5°C …
‘Structure-from-Motion’ photogrammetry
Cosmogenic nuclide exposure ages for moraines in the Lago San Martin Valley, Argentina
At several times during the Quaternary, a major eastward-flowing outlet glacier of the former Patagonian Ice Sheet occupied the Lago San Martin Valley in Argentina (49°S, 72°W). We present a glacial chronology for the valley based on geomorphological mapping and cosmogenic nuclide ( 10 Be) exposure ages ( n = 10) of boulders on moraines and lake shorelines. There are five prominent moraine belts in the Lago San Martin Valley, associated with exte…
A geomorphological map of Cadair Idris, Wales
Please click here to download the map associated with this article. This paper presents a new 1:10 000 scale geomorphological map of Cadair Idris, Wales. The geomorphology was mapped by the interpretation of colour aerial photographs (scale 1:10 000) and field investigations of landform/sediment associations. Digital Elevation Models (horizontal resolution 5 m, vertical resolution 1 m) sourced from NEXTMap Britain were used to supplement the geom…
The Glacial Map of southern South America
Please click here to download the map associated with this article. This paper describes The Glacial Map of southern South America. This is a new map of the glacial geomorphology of southern South America between latitudes 38°S and 56°S, approximately the area covered by the former Patagonian Ice Sheets. The map was compiled from interpretation of remotely sensed images (Landsat 7 ETM+, pan-sharpened Landsat 7 and ASTER scenes). The mapped geomor…
Glaciar León, Chilean Patagonia
Glaciar León is a temperate, grounded outlet of the eastern North Patagonian Icefield (NPI). It terminates at an active calving margin in Lago Leones, a 10 km long proglacial lake. We take a multidisciplinary approach to its description and use ASTER imagery and clast sedimentology to describe the geomorphology of the glacier and its associated moraines. We date periods of glacier retreat over the last 2500 years using a combination of lichenomet…
Evidence from the Rio Bayo valley on the extent of the North Patagonian Icefield during the Late Pleistocene–Holocene Transition
This paper presents data on the extent of the North Patagonian Icefield during the Late Pleistocene–Holocene transition using cosmogenic nuclide exposure age and optically stimulated luminescence dating. We describe geomorphological and geochronological evidence for glacier extent in one of the major valleys surrounding the North Patagonian Icefield, the Rio Bayo valley. Geomorphological mapping provides evidence for the existence of two types of…
Introduction to the Special Issue on Glacial Geology and Geomorphology
A glacial lake outburst flood associated with recent mountain glacier retreat, Patagonian Andes
Geomorphological mapping, sedimentology, lichenometry and dendrochronology were used to assess the nature and timing of glacier recession, moraine development and catastrophic mass movements in a tributary of the Leones valley, east of the Hielo Patagónico Norte, Chile. We show that during the 'Little Ice Age' Glaciar Calafate advanced downvalley to produce a terminal moraine. Recession of the glacier from this position occurred in the 1 870s and…
Fast-flowing outlet glaciers of the Last Glacial Maximum Patagonian Icefield
Glacial geomorphology around the Northern Patagonian Icefield indicates that a number of fast-flowing outlet glaciers (the continuation of ice streams further upglacier) drained the icefield during the Last Glacial Maximum. These topographically controlled fast-flowing glaciers may have dictated the overall pattern of Last Glacial Maximum ice discharge, lowered the ice-surface profile, and forced the ice-divide westward. The influence of the fast…
An advance of Soler Glacier, North Patagonian Icefield, at c. AD 1222–1342
Soler Glacier is a temperate outlet glacier on the eastern side of the North Patagonian Icefield in Chile. The glacier is currently receding from its ‘Little Ice Age’ maximum position, attained sometime between ad 1600 and 1900. Across the snout and forefield of the glacier is an arcuate belt of well-sorted granule gravel and coarse sand containing tree remains. These sediments are interpreted as reworked glaciolacustrine material, elevated to th…
An advance of Soler Glacier, North Patagonian Icefield, at c. AD 1222–1342
Soler Glacier is a temperate outlet glacier on the eastern side of the North Patagonian Icefield in Chile. The glacier is currently receding from its ‘Little Ice Age’ maximum position, attained sometime between ad 1600 and 1900. Across the snout and forefield of the glacier is an arcuate belt of well-sorted granule gravel and coarse sand containing tree remains. These sediments are interpreted as reworked glaciolacustrine material, elevated to th…
Glaciar León, Chilean Patagonia
Glaciar León is a temperate, grounded outlet of the eastern North Patagonian Icefield (NPI). It terminates at an active calving margin in Lago Leones, a 10 km long proglacial lake. We take a multidisciplinary approach to its description and use ASTER imagery and clast sedimentology to describe the geomorphology of the glacier and its associated moraines. We date periods of glacier retreat over the last 2500 years using a combination of lichenomet…
Little Ice Age glaciers in Britain
It is widely believed that the last glaciers in the British Isles disappeared at the end of the Younger Dryas stadial (12.9–11.7 cal. kyr BP). Here, we use a glacier–climate model driven by data from local weather stations to show for the first time that glaciers developed during the Little Ice Age (LIA) in the Cairngorm Mountains. Our model is forced from contemporary conditions by a realistic difference in mean annual air temperature of −1.5°C …
A glacial lake outburst flood associated with recent mountain glacier retreat, Patagonian Andes
Geomorphological mapping, sedimentology, lichenometry and dendrochronology were used to assess the nature and timing of glacier recession, moraine development and catastrophic mass movements in a tributary of the Leones valley, east of the Hielo Patagónico Norte, Chile. We show that during the 'Little Ice Age' Glaciar Calafate advanced downvalley to produce a terminal moraine. Recession of the glacier from this position occurred in the 1 870s and…
Glacier protection laws
An advance of Soler Glacier, North Patagonian Icefield, at c. AD 1222–1342
Soler Glacier is a temperate outlet glacier on the eastern side of the North Patagonian Icefield in Chile. The glacier is currently receding from its ‘Little Ice Age’ maximum position, attained sometime between ad 1600 and 1900. Across the snout and forefield of the glacier is an arcuate belt of well-sorted granule gravel and coarse sand containing tree remains. These sediments are interpreted as reworked glaciolacustrine material, elevated to th…
Fast-flowing outlet glaciers of the Last Glacial Maximum Patagonian Icefield
Glacial geomorphology around the Northern Patagonian Icefield indicates that a number of fast-flowing outlet glaciers (the continuation of ice streams further upglacier) drained the icefield during the Last Glacial Maximum. These topographically controlled fast-flowing glaciers may have dictated the overall pattern of Last Glacial Maximum ice discharge, lowered the ice-surface profile, and forced the ice-divide westward. The influence of the fast…
Evidence from the Rio Bayo valley on the extent of the North Patagonian Icefield during the Late Pleistocene–Holocene Transition
This paper presents data on the extent of the North Patagonian Icefield during the Late Pleistocene–Holocene transition using cosmogenic nuclide exposure age and optically stimulated luminescence dating. We describe geomorphological and geochronological evidence for glacier extent in one of the major valleys surrounding the North Patagonian Icefield, the Rio Bayo valley. Geomorphological mapping provides evidence for the existence of two types of…
Introduction to the Special Issue on Glacial Geology and Geomorphology
A glacial lake outburst flood associated with recent mountain glacier retreat, Patagonian Andes
Geomorphological mapping, sedimentology, lichenometry and dendrochronology were used to assess the nature and timing of glacier recession, moraine development and catastrophic mass movements in a tributary of the Leones valley, east of the Hielo Patagónico Norte, Chile. We show that during the 'Little Ice Age' Glaciar Calafate advanced downvalley to produce a terminal moraine. Recession of the glacier from this position occurred in the 1 870s and…
A geomorphological map of Cadair Idris, Wales
Please click here to download the map associated with this article. This paper presents a new 1:10 000 scale geomorphological map of Cadair Idris, Wales. The geomorphology was mapped by the interpretation of colour aerial photographs (scale 1:10 000) and field investigations of landform/sediment associations. Digital Elevation Models (horizontal resolution 5 m, vertical resolution 1 m) sourced from NEXTMap Britain were used to supplement the geom…
The Glacial Map of southern South America
Please click here to download the map associated with this article. This paper describes The Glacial Map of southern South America. This is a new map of the glacial geomorphology of southern South America between latitudes 38°S and 56°S, approximately the area covered by the former Patagonian Ice Sheets. The map was compiled from interpretation of remotely sensed images (Landsat 7 ETM+, pan-sharpened Landsat 7 and ASTER scenes). The mapped geomor…
Glaciar León, Chilean Patagonia
Glaciar León is a temperate, grounded outlet of the eastern North Patagonian Icefield (NPI). It terminates at an active calving margin in Lago Leones, a 10 km long proglacial lake. We take a multidisciplinary approach to its description and use ASTER imagery and clast sedimentology to describe the geomorphology of the glacier and its associated moraines. We date periods of glacier retreat over the last 2500 years using a combination of lichenomet…
Cosmogenic nuclide exposure ages for moraines in the Lago San Martin Valley, Argentina
At several times during the Quaternary, a major eastward-flowing outlet glacier of the former Patagonian Ice Sheet occupied the Lago San Martin Valley in Argentina (49°S, 72°W). We present a glacial chronology for the valley based on geomorphological mapping and cosmogenic nuclide ( 10 Be) exposure ages ( n = 10) of boulders on moraines and lake shorelines. There are five prominent moraine belts in the Lago San Martin Valley, associated with exte…
‘Structure-from-Motion’ photogrammetry
The structural glaciology of southwest Antarctic Peninsula Ice Shelves (ca. 2010)
The Antarctic Peninsula has recently seen a rapid breakup of its peripheral ice shelves, attributed to atmospheric and oceanic warming in the region. Previous work has illustrated that the final breakup mechanisms are often controlled by the structural glaciology of the ice shelf, and thus understanding the structure of the remaining ‘stable’ ice shelves is of fundamental importance to assess their future response to continued environmental chang…
Little Ice Age glaciers in Britain
It is widely believed that the last glaciers in the British Isles disappeared at the end of the Younger Dryas stadial (12.9–11.7 cal. kyr BP). Here, we use a glacier–climate model driven by data from local weather stations to show for the first time that glaciers developed during the Little Ice Age (LIA) in the Cairngorm Mountains. Our model is forced from contemporary conditions by a realistic difference in mean annual air temperature of −1.5°C …
Rapid thinning of the Welsh Ice Cap at 20–19 ka Based on 10 Be Ages
New 10 Be ages from the summits of three mountain areas of North Wales reveal a very similar exposure timing as the Welsh Ice Cap thinned after the global Last Glacial Maximum. Eight bedrock and one boulder sample gave a combined arithmetic mean exposure age of 19.08 ± 0.80 ka (4.2%, 1σ). Similar exposure ages over a 320 m vertical range (824 to 581 m altitude) show that ice cap thinning was very rapid and spatially uniform. Using the same produc…
Structural glaciology of Austre Brøggerbreen, northwest Svalbard
Structural glaciological maps can be used to study the structural evolution and past dynamics of glaciers. The map described here documents the glacier-wide structural characteristics of Austre Brøggerbreen, a c. 12 km2 predominantly cold-based valley glacier in northwest Svalbard. The structural map reveals that the glacier is dominated by deep-penetrating fractures that are now relict (crevasse traces). These structures indicate that, despite b…
Glaciological and geomorphological map of Glacier Noir and Glacier Blanc, French Alps
This paper presents and describes a glaciological and geomorphological map of Glacier Noir and Glacier Blanc, French Alps. Glacier Noir is a debris-covered glacier and is adjacent to Glacier Blanc, a clean-ice (debris-free) glacier. The glaciological and geomorphological evolution of Glacier Blanc is well known, but the evolution of Glacier Noir is poorly understood, as is the case for many debris-covered glaciers globally, despite their importan…
Changes in glacier surface cover on Baltoro glacier, Karakoram, north Pakistan, 2001–2012
The presence of supraglacial debris on glaciers in the Himalaya-Karakoram affects the ablation rate of these glaciers and their response to climatic change. To understand how supraglacial debris distribution and associated surface features vary spatially and temporally, geomorphological mapping was undertaken on Baltoro Glacier, Karakoram, for three time-separated images between 2001–2012. Debris is supplied to the glacier system through frequent…
Glacier protection laws
The glacial geomorphology of western Dronning Maud Land, Antarctica
Reconstructing the response of present-day ice sheets to past global climate change is important for constraining and refining the numerical models which forecast future contributions of these ice sheets to sea-level change. Mapping landforms is an essential step in reconstructing glacial histories. Here we present a new map of glacial landforms and deposits on nunataks in western Dronning Maud Land, Antarctica. Nunataks are mountains or ridges t…
Geomorphology of Ulu Peninsula, James Ross Island, Antarctica
This study presents a 1:25,000 geomorphological map of the northern sector of Ulu Peninsula, James Ross Island, Antarctic Peninsula. The map covers an area of c. 250 km 2 , and documents the landforms and surficial sediments of one of the largest ice-free areas in Antarctica, based on remote sensing and field-based mapping. The large-scale landscape features are determined by the underlying Cretaceous sedimentary and Neogene volcanic geology, whi…
The glacial geomorphology of the Cordillera Darwin Icefield, Tierra del Fuego, southernmost South America
The Cordillera Darwin Icefield (CDI) has experienced widespread retreat since the Little Ice Age (LIA, ∼1870 AD). Prior to this, information on outlet glacier dynamics is limited as there are few terrestrial observations and little mapped deglacial evidence, limiting our understanding of CDI dynamics on Holocene centennial to millennial timescales. Here we present a glacial geomorphological map of terrestrial landforms and features for the CDI an…
Geography (19 obras) · Physical geography (19 obras) · Cryospheric studies and observations (18 obras) · Geomorphology (18 obras) · Geology (15 obras) · Glacier (15 obras) · Geology and Paleoclimatology Research (14 obras) · Glacial period (13 obras) · Moraine (10 obras) · Cryosphere (9 obras)