Ravi Bhushan
Biographic Data
| ID | 4455198 |
|---|---|
| NAME | Ravi Bhushan |
| GIVEN NAMES | Ravi |
| FAMILY NAME | Bhushan |
| SIGNATURE | BHUSHAN R |
| AFFILIATIONS | Physical Research Laboratory |
| ORCID | 0000-0003-1347-5446 |
| VERIFIED | Yes |
| TOTAL WORKS | 27 |
| TOTAL CITATIONS | 15 |
| AUTHOR COUNT | 27 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1992 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 3 |
Complexity at the Fringe
The peripheries of cities in Australia are witnessing dynamic socio-spatial changes driven by infrastructure growth and land-use changes. This study investigates how land-use changes and housing developments near legacy industries in a recently established outer suburb of Melbourne lead to land-use conflicts and emerging air quality concerns, such as dust, odour, and noise. Employing a mixed-methods approach that combines spatial analysis with st…
Air Pollution in India
The current air pollution crisis in Delhi has become a major public health concern, yet popular narratives continue to reduce it to seasonal problem and blame the farmers for stubble burning. This commentary argues that air pollution in Indian cities is the structural outcome of speculative metropolitan expansion. Drawing on remote-sensing evidence from the Hyderabad Metropolitan Region, we show how the state’s pursuit of real-estate driven growt…
Hydrological changes and landform evolution since the Bølling-Allerød interstadial in the Eastern Great Rann of Kachchh, India
The post-glacial (Bølling-Allerød) sedimentary archive preserved in the Eastern Great Rann of Kachchh (EGRK) is used to reconstruct the pattern of Indian Summer Monsoon (ISM) variability, landform evolution, and the impact on the Indus Valley Civilization (IVC). Employing the sedimentology, geochemistry, and chronology supported by statistical analysis, four major phases of strengthened and weakened monsoon conditions are inferred. The pattern of…
Decoding late Quaternary paleoclimatic signatures from the western Bay of Bengal
Was LIA synchronous with equa-tropical climate? A multiproxy study from the southwest coast of India
Geochemical records of mudflat sediments from southern Saurashtra, Western India
The heat transfer from the low latitudes to high latitudes is responsible for maintaining the earth’s climate dynamics. Thus, deciphering the possible mechanism driving the variability of the Indian summer monsoon (ISM) during the Holocene Epoch has been critical to understand the hydroclimatic changes of the low latitudes. Despite several efforts, the teleconnection of ISM with the global climate dynamics remains under-represented and poorly und…
Presence and implications of petrogenic organic carbon in High Himalayan Crystalline lake sediment
Twelve lacustrine sediment samples from a relict lake in the Kalla Glacier valley were co-dated using AMS radiocarbon ( 14 C) and infrared stimulated luminescence (IRSL) dating methods. In general, the radiocarbon ages of bulk organic matter were older by a minimum of 1500 years compared to (age depth) modeled luminescence ages after fading corrections. This is observed for the first time in the lake sediments of High Himalayan Crystalline zone. …
Luminescence and radiocarbon chronology of Bhagatrav
Excavation at the site of Bhagatrav yielded four layers of cultural deposits: the lowermost being the Sorath Harappan, the upper two are medieval, and layer three caps the Sorath Harappan layer. A horn-deity painted dish was found in a stratified context at the lowest level. The medieval deposit includes turquoise glazed and celadon wares, followed by an abundance of Monochrome Glazed Ware, which is otherwise known as Khambhat ware. The date of t…
A 2600-yr multiproxy record for climate and vegetation reconstruction along the Mahanadi River delta, east coast of India
Understanding the impact of climate change on the vegetation cover in the past is crucial for predicting the future warming scenario and its consequences. The present study integrates biotic (palynological analysis) and abiotic proxy (sediment chemistry, clay mineral assemblages and grain size end member (EM) analysis) records in a chronologically constrained sedimentary sequence from the southeastern part of the Mahanadi River delta to reconstru…
Late-Holocene hydrological variability from the NW Himalaya and southwestern Tibetan Plateau
Variations in lake-levels and hydrology are connected to climatic dynamics over the Trans-Himalaya and Tibetan Plateau (TP). Pangong Tso, a ~140 km long hypersaline lake, is sensitive to changes in air temperature, precipitation and snow-glacier melt over the southwestern TP. The incised tributaries entering the lake expose deltaic sequences constituting topset, foreset and bottomset. Sedimentology, chronology and diatom analysis of delta sedimen…
Late-Holocene wildfire record from the Stagmo peat section, Leh valley, NW Himalaya
Wildfire is an integral component of the terrestrial ecosystem that plays a significant role in regulating the vegetation cover. The paleofire records stored in lacustrine, peat, or marine sedimentary deposits along with environmental proxy records provide temporal information on fire activity and contemporary climatic conditions on a regional scale. A ~2.8m long peat sedimentary profile from Stagmo, Indus Valley, Ladakh Himalaya was examined for…
Holocene monsoon and sea-level variability from coastal lowlands of Kerala, SW India
New Chronology for Megalithic Burials in Vidarbha (Central India)
Megalithic cultures of central India provide important links between the southern Neolithic-Chalcolithic cultures and the early Historical period (∼500 BC to ∼AD 700) and reveal knowledge of ancient traditions of early inhabitants. Scientific dating of these Megalithic burial sites is a challenging task due to scarcity of dateable material and alterations. Here, we present multiple accelerator mass spectrometry radiocarbon (AMS 14 C) dates from e…
Causes and implications of Mid- to Late Holocene relative sea-level change in the Gulf of Kachchh, western India
The relict intertidal deposits from the Kharod River Estuary, Gulf of Kachchh, and the distal end of Kori Creek are used to infer the Mid- to Late Holocene relative sea-level (RSL) change in western India. Employing sedimentology, geochemistry, palynology, ichnology, and optical and radiocarbon dating, the study suggests the dominance of fluvial activity between 16.5 ± 1.6 and 9.9 ± 0.7 ka. After ~7 ka (7.3 ± 0.4, 6.8 ± 0.5 ka), the sea level sho…
Mid-late Holocene evolutionary history and climate reconstruction of Vellayani lake, south India
Holocene hydroclimatic variability in the Zanskar Valley, Northwestern Himalaya, India
A 1.3-m-long sediment core from the Penzi-la pass, Zanskar Valley, provides a record of hydroclimatic conditions and abrupt climate changes over short time scales since the mid-Holocene. These climatic changes of centennial time scale are crucial to understanding the hydroclimatic variability in northwestern (NW) Himalaya. Relatively higher δ 13 C values complemented by total organic carbon, loss on ignition, grain size parameters, and lower Rubi…
Centering Bhasha (Indigenous Languages)
The 21st February is celebrated as the International Mother Language Day to commemorate the sacrifice of Bangladeshis who struggled to keep their mother tongue (Bangla) alive. The day is also celebrated to mark respect for world’s indigenous languages (Bhasha), which are on the verge of decline and demise. Notwithstanding the fact that, increasingly, English has gained most of the linguistic ground world over, the tacit and now most vocal resista…
Early Holocene Indian summer monsoon and its impact on vegetation in the Central Himalaya
Increase in rainfall during the early Holocene has been reported from different regions of Indian subcontinent, although the magnitude shows spatial variability with lower change in higher rainfall regions and vice versa. While the early-Holocene rainfall records are available from lowland areas of the Indian sub-continent, the record is poorly documented from the high-altitude Central Himalayan region where orography plays an important role in t…
Signatures of global climatic events and forcing factors for the last two millennia from the active mudflats of Rohisa, southern Saurashtra, Gujarat, western India
Mid−late Holocene monsoonal records from the partially active mudflat of Diu Island, southern Saurashtra, Gujarat, western India
An Early Historic Assemblage Offshore of Godawaya, Sri Lanka
Decadal Variations in Oceanic Properties of the Arabian Sea Water Column since Geosecs
This article reports temporal changes in the measured oceanic geochemical properties of the Arabian Sea and the equatorial Indian Ocean by reoccupying six stations investigated during the GEOSECS expedition in 1977 and 1978. Observed differences are interpreted in terms of plausible changes in the environment and climate that have occurred in response to natural or anthropogenic processes. The depth profiles of major parameters such as dissolved …
Conference Participants
From the 19th International Radiocarbon Conference held in Keble College, Oxford, England, April 3-7, 2006
Paleoproductivity Variations in the Equatorial Arabian Sea
We analyzed a sediment core from the equatorial Arabian Sea, chronologically constrained by accurate accelerator mass spectrometry (AMS) radiocarbon dates on selected planktonic foraminiferal species, for paleoproductivity variations corresponding to the variations in the Indian Ocean Equatorial Westerlies (IEW). The IEW in turn are positively correlated to the Southern Oscillation Index (SOI), which is a measure of El Niño, Southwest monsoon (SW…
Conference Participants
From the 16th International Radiocarbon Conference held in Gronigen, Netherlands, June 16-20, 1997
An Early Historic Assemblage Offshore of Godawaya, Sri Lanka
Early Holocene Indian summer monsoon and its impact on vegetation in the Central Himalaya
Increase in rainfall during the early Holocene has been reported from different regions of Indian subcontinent, although the magnitude shows spatial variability with lower change in higher rainfall regions and vice versa. While the early-Holocene rainfall records are available from lowland areas of the Indian sub-continent, the record is poorly documented from the high-altitude Central Himalayan region where orography plays an important role in t…
Physical Research Laboratory (Chemistry) Radiocarbon Date List I
We present here radiocarbon dates obtained using a liquid scintillation system installed at the Physical Research Laboratory (PRL), which has been in operation for the past three years for 14 C measurements of oceanographic and geochemical samples from India
Geochemical records of mudflat sediments from southern Saurashtra, Western India
The heat transfer from the low latitudes to high latitudes is responsible for maintaining the earth’s climate dynamics. Thus, deciphering the possible mechanism driving the variability of the Indian summer monsoon (ISM) during the Holocene Epoch has been critical to understand the hydroclimatic changes of the low latitudes. Despite several efforts, the teleconnection of ISM with the global climate dynamics remains under-represented and poorly und…
Decoding late Quaternary paleoclimatic signatures from the western Bay of Bengal
Late-Holocene hydrological variability from the NW Himalaya and southwestern Tibetan Plateau
Variations in lake-levels and hydrology are connected to climatic dynamics over the Trans-Himalaya and Tibetan Plateau (TP). Pangong Tso, a ~140 km long hypersaline lake, is sensitive to changes in air temperature, precipitation and snow-glacier melt over the southwestern TP. The incised tributaries entering the lake expose deltaic sequences constituting topset, foreset and bottomset. Sedimentology, chronology and diatom analysis of delta sedimen…
Conference Participants
From the 16th International Radiocarbon Conference held in Gronigen, Netherlands, June 16-20, 1997
Family types and communication with parents
Physical Research Laboratory (Chemistry) Radiocarbon Date List I
We present here radiocarbon dates obtained using a liquid scintillation system installed at the Physical Research Laboratory (PRL), which has been in operation for the past three years for 14 C measurements of oceanographic and geochemical samples from India
Conference Participants
From the 16th International Radiocarbon Conference held in Gronigen, Netherlands, June 16-20, 1997
Paleoproductivity Variations in the Equatorial Arabian Sea
We analyzed a sediment core from the equatorial Arabian Sea, chronologically constrained by accurate accelerator mass spectrometry (AMS) radiocarbon dates on selected planktonic foraminiferal species, for paleoproductivity variations corresponding to the variations in the Indian Ocean Equatorial Westerlies (IEW). The IEW in turn are positively correlated to the Southern Oscillation Index (SOI), which is a measure of El Niño, Southwest monsoon (SW…
Conference Participants
From the 19th International Radiocarbon Conference held in Keble College, Oxford, England, April 3-7, 2006
An Early Historic Assemblage Offshore of Godawaya, Sri Lanka
Decadal Variations in Oceanic Properties of the Arabian Sea Water Column since Geosecs
This article reports temporal changes in the measured oceanic geochemical properties of the Arabian Sea and the equatorial Indian Ocean by reoccupying six stations investigated during the GEOSECS expedition in 1977 and 1978. Observed differences are interpreted in terms of plausible changes in the environment and climate that have occurred in response to natural or anthropogenic processes. The depth profiles of major parameters such as dissolved …
Mid−late Holocene monsoonal records from the partially active mudflat of Diu Island, southern Saurashtra, Gujarat, western India
Signatures of global climatic events and forcing factors for the last two millennia from the active mudflats of Rohisa, southern Saurashtra, Gujarat, western India
Holocene hydroclimatic variability in the Zanskar Valley, Northwestern Himalaya, India
A 1.3-m-long sediment core from the Penzi-la pass, Zanskar Valley, provides a record of hydroclimatic conditions and abrupt climate changes over short time scales since the mid-Holocene. These climatic changes of centennial time scale are crucial to understanding the hydroclimatic variability in northwestern (NW) Himalaya. Relatively higher δ 13 C values complemented by total organic carbon, loss on ignition, grain size parameters, and lower Rubi…
Centering Bhasha (Indigenous Languages)
The 21st February is celebrated as the International Mother Language Day to commemorate the sacrifice of Bangladeshis who struggled to keep their mother tongue (Bangla) alive. The day is also celebrated to mark respect for world’s indigenous languages (Bhasha), which are on the verge of decline and demise. Notwithstanding the fact that, increasingly, English has gained most of the linguistic ground world over, the tacit and now most vocal resista…
Early Holocene Indian summer monsoon and its impact on vegetation in the Central Himalaya
Increase in rainfall during the early Holocene has been reported from different regions of Indian subcontinent, although the magnitude shows spatial variability with lower change in higher rainfall regions and vice versa. While the early-Holocene rainfall records are available from lowland areas of the Indian sub-continent, the record is poorly documented from the high-altitude Central Himalayan region where orography plays an important role in t…
Causes and implications of Mid- to Late Holocene relative sea-level change in the Gulf of Kachchh, western India
The relict intertidal deposits from the Kharod River Estuary, Gulf of Kachchh, and the distal end of Kori Creek are used to infer the Mid- to Late Holocene relative sea-level (RSL) change in western India. Employing sedimentology, geochemistry, palynology, ichnology, and optical and radiocarbon dating, the study suggests the dominance of fluvial activity between 16.5 ± 1.6 and 9.9 ± 0.7 ka. After ~7 ka (7.3 ± 0.4, 6.8 ± 0.5 ka), the sea level sho…
Mid-late Holocene evolutionary history and climate reconstruction of Vellayani lake, south India
Holocene monsoon and sea-level variability from coastal lowlands of Kerala, SW India
New Chronology for Megalithic Burials in Vidarbha (Central India)
Megalithic cultures of central India provide important links between the southern Neolithic-Chalcolithic cultures and the early Historical period (∼500 BC to ∼AD 700) and reveal knowledge of ancient traditions of early inhabitants. Scientific dating of these Megalithic burial sites is a challenging task due to scarcity of dateable material and alterations. Here, we present multiple accelerator mass spectrometry radiocarbon (AMS 14 C) dates from e…
A 2600-yr multiproxy record for climate and vegetation reconstruction along the Mahanadi River delta, east coast of India
Understanding the impact of climate change on the vegetation cover in the past is crucial for predicting the future warming scenario and its consequences. The present study integrates biotic (palynological analysis) and abiotic proxy (sediment chemistry, clay mineral assemblages and grain size end member (EM) analysis) records in a chronologically constrained sedimentary sequence from the southeastern part of the Mahanadi River delta to reconstru…
Late-Holocene hydrological variability from the NW Himalaya and southwestern Tibetan Plateau
Variations in lake-levels and hydrology are connected to climatic dynamics over the Trans-Himalaya and Tibetan Plateau (TP). Pangong Tso, a ~140 km long hypersaline lake, is sensitive to changes in air temperature, precipitation and snow-glacier melt over the southwestern TP. The incised tributaries entering the lake expose deltaic sequences constituting topset, foreset and bottomset. Sedimentology, chronology and diatom analysis of delta sedimen…
Late-Holocene wildfire record from the Stagmo peat section, Leh valley, NW Himalaya
Wildfire is an integral component of the terrestrial ecosystem that plays a significant role in regulating the vegetation cover. The paleofire records stored in lacustrine, peat, or marine sedimentary deposits along with environmental proxy records provide temporal information on fire activity and contemporary climatic conditions on a regional scale. A ~2.8m long peat sedimentary profile from Stagmo, Indus Valley, Ladakh Himalaya was examined for…
Was LIA synchronous with equa-tropical climate? A multiproxy study from the southwest coast of India
Geochemical records of mudflat sediments from southern Saurashtra, Western India
The heat transfer from the low latitudes to high latitudes is responsible for maintaining the earth’s climate dynamics. Thus, deciphering the possible mechanism driving the variability of the Indian summer monsoon (ISM) during the Holocene Epoch has been critical to understand the hydroclimatic changes of the low latitudes. Despite several efforts, the teleconnection of ISM with the global climate dynamics remains under-represented and poorly und…
Presence and implications of petrogenic organic carbon in High Himalayan Crystalline lake sediment
Twelve lacustrine sediment samples from a relict lake in the Kalla Glacier valley were co-dated using AMS radiocarbon ( 14 C) and infrared stimulated luminescence (IRSL) dating methods. In general, the radiocarbon ages of bulk organic matter were older by a minimum of 1500 years compared to (age depth) modeled luminescence ages after fading corrections. This is observed for the first time in the lake sediments of High Himalayan Crystalline zone. …
Luminescence and radiocarbon chronology of Bhagatrav
Excavation at the site of Bhagatrav yielded four layers of cultural deposits: the lowermost being the Sorath Harappan, the upper two are medieval, and layer three caps the Sorath Harappan layer. A horn-deity painted dish was found in a stratified context at the lowest level. The medieval deposit includes turquoise glazed and celadon wares, followed by an abundance of Monochrome Glazed Ware, which is otherwise known as Khambhat ware. The date of t…
Hydrological changes and landform evolution since the Bølling-Allerød interstadial in the Eastern Great Rann of Kachchh, India
The post-glacial (Bølling-Allerød) sedimentary archive preserved in the Eastern Great Rann of Kachchh (EGRK) is used to reconstruct the pattern of Indian Summer Monsoon (ISM) variability, landform evolution, and the impact on the Indus Valley Civilization (IVC). Employing the sedimentology, geochemistry, and chronology supported by statistical analysis, four major phases of strengthened and weakened monsoon conditions are inferred. The pattern of…
Decoding late Quaternary paleoclimatic signatures from the western Bay of Bengal
Geology (18 works) · Geology and Paleoclimatology Research (18 works) · Geography (15 works) · Oceanography (15 works) · Holocene (12 works) · Physical geography (12 works) · Paleontology (11 works) · Radiocarbon dating (10 works) · Climatology (9 works) · Geological formations and processes (9 works)