Pulse 100

Asked

21 Apr 2013 by beechcroft

Updated

23 March 2017

Topics

anxiety, generalized anxiety disorder

else have this problem i phoned 999 up they said it was ok but i'm a bit worried

A pulse of 100 per minute, depending on your age, and if it is for short periods of time (during exercise, etc) is quite well tolerated by your body. There are many charts done with your age,etc and your maximum safe hearth rhythm. They are quite accurate. Heart rates that are consistently above 100, even when the patient is sitting quietly, can sometimes be caused by an abnormal heart rhythm. A high heart rate can also mean the heart muscle is weakened by a virus or some other problem that forces it to beat more often to pump enough blood to the rest of the body.

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Dear Beechcroft,
It is usually going to be fast when you are anxious or even thinking about something that might upset or excite you. Its your body's natural reaction to fear. You dont state anything regarding meds that you take. Is your anxiety the only thing you are being treated for? That info will enable us to answer you more accurately. If it gets too bad, you should contact your doctor or go to the ER. I hope that you are able to calm down and get your heart rate down. If not, I suggest you go to the ER. Realize that I am not a medical professional. These are strictly my own personal views and advice. I wish you luck. Please come back and let us know how you are doing.
In peace,
Tee

Hello. 100 is not as good when at rest and laying down. After resting, check again. It may well be below that. A medication you may have can put your pulse up such as antihistamines for a cold.This can be an early sign of disease as well. Assuming you do not have a fever, it could be thyroid or other metabolic issues, high cholesterol blocking, and so forth. Have you had a physical recently?

There is a chart regarding allowable pulse rates for people at rest. Basically, you take 220 and subtract your age. If your pulse is over that amount, or close, you seek an ER. That is why the ER was not interested. You are fine. If you are over 60, or so, then be sure to seek a doctor or ER if it continues to climb.

So anxiety is the cause for you, most probably, and the rate goes down if you nap or lay down for a while. If you were walking or had just done some physical activity then you are fine. Please diagnose the cause by setting up a doctor appointment soon so you know, ok? Not to worry now. Let us know how you are doing. Karen

Yes, i also have this problem each time I have an anxiety episode. Sometimes wake up in middle of night with it. My doc started me on a beta blocker med called Atenolol which helps to lower pulse rate for those who suffer this problem and it helps very much!! Dont worry tho, my pulse use to reach 130 and would hyperventilate trying to breath deep and calm down. So sorry for suffering but you can get help.

Hi beech, my little chickie.

Here's some info from the mayo clinic that may answer your question way far better than what I can. Thank you for asking the question. I gained much needed knowledge for my own well being and that of others. This is a long answer to your question, so you choose what applies to your own situation. So here goes:

A normal resting heart rate for adults ranges from 60 to 100 beats a minute.

Generally, a lower heart rate at rest implies more efficient heart function and better cardiovascular fitness. For example, a well-trained athlete might have a normal resting heart rate closer to 40 beats a minute.

To measure your heart rate, simply check your pulse. Place your index and third fingers on your neck to the side of your windpipe. To check your pulse at your wrist, place two fingers between the bone and the tendon over your radial artery — which is located on the thumb side of your wrist.

When you feel your pulse, count the number of beats in 15 seconds. Multiply this number by 4 to calculate your beats per minute. (I checked mine according to the second hand of the clock and it was 60)

Keep in mind that many factors can influence heart rate, including:

Activity level
Fitness level
Air temperature
Body position (standing up or lying down, for example)
Emotions
Body size
Medications

Although there's a wide range of normal, an unusually high or low heart rate may indicate an underlying problem. Consult your doctor if your resting heart rate is consistently above 100 beats a minute (tachycardia) or below 60 beats a minute (bradycardia) — especially if you have other signs or symptoms, such as fainting, dizziness or shortness of breath.

Would you please let me know what yor pulse rate is? I'm curious. (I think that's a good reason. Ha. Yeah, right.) I am serious though, lil chickie.

Love,

Anna

I also always have a high heart rate,every time I go to Dr, hospital. Or out in public.first you should get your heart checked to rule it out just to be safe.I'm on klonopin 3 times a day and although it helps down from heart running 103 to106 to 96 95.are you on anxiety meds if not this could help.I am 36 and I thought something was wrong with heart also till I got it ruled out.it's just anxiety. Good luck let me know.

I have a very high heart rate because of my anxiety, just sitting or resting I can be anywhere from 100-160 (not healthy I know) and sleeping im at about a 85-95. So I can't say it is healthy, but it's not uncommon for anxiety to cause high heart rates.

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Meltwater pulse 1A (MWP1a) is the name used by Quaternarygeologists, paleoclimatologists, and oceanographers for a period of rapid post-glacialsea level rise, between 13,500 and 14,700 years ago, during which global sea level rose between 16 meters (52 ft) and 25 meters (82 ft) in about 400–500 years, giving mean rates of roughly 40–60 mm (0.13–0.20 ft)/yr.^[1] Meltwater pulse 1A is also known as catastrophic rise event 1 (CRE1) in the Caribbean Sea.^[2] The rates of sea level rise associated with meltwater pulse 1A are the highest known rates of post-glacial, eustatic sea level rise. Meltwater pulse 1A is also the most widely recognized and least disputed of the named, postglacial meltwater pulses. Other named, postglacial meltwater pulses are known most commonly as meltwater pulse 1A0 (meltwater pulse 19ka), meltwater pulse 1B, meltwater pulse 1C, meltwater pulse 1D, and meltwater pulse 2. It and these other periods of rapid sea level rise are known as meltwater pulses because the inferred cause of them was the rapid release of meltwater into the oceans from the collapse of continental ice sheets.^[1][3]

Sea level and timing[edit]

Meltwater pulse 1A occurred in a period of rising sea level and rapid climate change, known as Termination I, when the retreat of continental ice sheets was going on during the end of the last ice age. Several researchers have narrowed the period of the pulse to between 13,500 and 14,700 calendar years ago with its peak at about 13,800 calendar years ago.^[3] The start of this meltwater event coincides with or closely follows the abrupt onset of the Bølling-Allerød (B-A) interstadial and warming in the NorthGRIP ice core in Greenland at 14,600 calendar years ago.^[4] During meltwater pulse 1A, sea level is estimated to have risen at a rate of 40–60 mm (0.13–0.20 ft)/yr.^[1] This rate of sea level rise was much larger than the rate of current sea level rise, which has been estimated to be in the region of 2–3 mm (0.0066–0.0098 ft)/yr.^[5][6]

Source(s) of meltwater pulse 1A[edit]

The source of meltwaters for meltwater pulse 1A and the path they took remains a matter of continuing controversy. The technique of sea-level fingerprinting has been used to argue that major contribution to this meltwater pulse came from Antarctica.^[7][8] On the other hand, other studies have argued for the Laurentide Ice Sheet in North America being the dominant source of this meltwater pulse.^[9][10][11] The magnitude of eustatic sea level rise during meltwater pulse 1A is a significant indicator of its sources. A eustatic sea level rise around 10 meters (33 ft) could plausibly be solely explained by a North American source.^[12][13] On the other hand, if the eustatic sea level rise was larger and closer to 20 meters (66 ft), a significant fraction of the meltwater that caused it likely came from the Antarctic Ice Sheet.^[14][15] Ice sheet modelling work suggests that the abrupt onset of the Bølling-Allerød (B-A) may have triggered the separation of the Cordilleran ice sheet and Laurentide Ice Sheet (and the opening of the ice-free corridor) producing a major contribution to meltwater pulse 1A from the North American ice sheet.^[16][17] A contribution of around 2 meters (6.6 ft) in 350 years to meltwater pulse 1A from the Antarctic Ice Sheet could have been caused by Southern Ocean warming.^[18] Besides the North American and Antarctic Ice Sheet, the Fennoscandian and Barents Sea Ice Sheet could also have contributed 3 to 7 meters (9.8 to 23.0 ft) to meltwater pulse 1A.^[19][20]

Mississippi River meltwater flood events[edit]

In the case of the Mississippi River, the sediments of the Louisiana continental shelf and slope, including the Orca Basin, within the Gulf of Mexico preserve a variety of paleoclimate and paleohydrologic proxies.^[21][22][23] They have been used to reconstruct both the duration and discharge of Mississippi River meltwater events and superfloods for the Late glacial and postglacial periods, including the time of meltwater pulse 1A.^[24][25][26] The chronology of flooding events found by the study of numerous cores on the Louisiana continental shelf and slope are in agreement that the timing of meltwater pulses. For example, meltwater pulse 1A in the Barbados coral record matches quite well with a group of two Mississippi River meltwater flood events, MWF-3 (12,600 radiocarbon years ago); and MWF-4 (11,900 radiocarbon years ago). In addition, meltwater pulse 1B in the Barbados coral record matches a cluster of four Mississippi River superflood events, MWF-5, that occurred between 9,900 and 9,100 radiocarbon years ago. The discharge of water coursing down the Mississippi River during meltwater flood MWF-4 is estimated to have been 0.15 sverdrups (million cubic meters per second). This discharge is roughly equivalent to 50% of the global discharge during meltwater pulse 1A. This research also shows that the Mississippi meltwater flood MWF-4 occurred during the Allerød oscillation and had largely stopped before the beginning of the Younger Dryas stadial. The same research found an absence of meltwater floods discharging into the Gulf of Mexico from the Mississippi River for a period of time following meltwater flood MWF-4, known as the cessation event, that corresponds with the Younger Dryas stadial.^[21][22][25]

Prior to Mississippi River meltwater flood MWF-3, two other Mississippi River meltwater floods, MWF-2 and MWF-1, have been recognized. The first of these, MWF-1, consists of three separate, but closely spaced events that occurred between 16,000 and 15,450 (MWF-1a); 15,000 and 14,700 (MWF-1b); and 14,460 and 14,000 (MWF-1c) radiocarbon years ago. Each of these flood events had a discharge of about 0.08 to 0.09 sverdrups (million cubic meters per second). Collectively, they appear to be associated with meltwater pulse 1A0. Later, one of the largest of the Mississippi River meltwater floods, MWF-2, occurred between 13,600 and 13,200 radiocarbon years ago. During its 400 radiocarbon year duration, the maximum discharge of Mississippi River meltwater flood MWF-2 is estimated to have been between 0.15 and 0.19 sverdrups. Despite the large size of Mississippi River meltwater flood MWF-2, it is not known to be associated with an identifiable meltwater pulse in any sea level record.^[25]

Antarctica iceberg discharge events[edit]

With respect to the Antarctic Ice Sheet, research by Weber and others constructed a well-dated, high-resolution record of the discharge of icebergs from various parts of the Antarctic Ice Sheet for the past 20,000 calendar years, They constructed this record from variations in the amount of iceberg-rafted debris versus time and other environmental proxies in two cores taken from the ocean bottom within Iceberg Alley of the Weddell Sea. The sediments within Iceberg Alley provide a spatially integrated signal of the variability of the discharge of icebergs into the marine waters by the Antarctic Ice Sheet because it is a confluence zone in which icebergs calved from the entire Antarctic Ice Sheet drift along currents, converge, and exit the Weddell Sea to the north into the Scotia Sea.^[27]

Between 20,000 and 9,000 calendar years ago, this study documented eight well-defined periods of increased iceberg Ice calving and discharge from various parts of the Antarctic Ice Sheet. The highest period of discharge of icebergs recorded in both cores is known as AID6 (Antarctic Iceberg Discharge event 6). AID6 has a relatively abrupt onset at about 15,000 calendar years ago. The peak interval of greatest iceberg discharge and flux from the Antarctic Ice sheet for AID6 is between about 14,800 and 14,400 calendar years ago. The peak discharge is followed by gradual decline in flux until 13,900 calendar years ago, when it abruptly ends. The peak period of iceberg discharge for AID6 is synchronous with the onset of the Bølling interstadial in the Northern Hemisphere meltwater pulse 1A. Weber and others estimated that the flux of icebergs from Antarctica during AID6 contributed a substantial (at least 50%) to the global mean sea-level rise that occurred during meltwater pulse 1A.^[27][28] These icebergs came from the widespread retreat of the Antarctic Ice Sheet at this time, including from the Mac Robertson Land region of the East Antarctic Ice Sheet; the Ross Sea sector of the West Antarctic Ice Sheet; and the Antarctic Peninsula Ice Sheet.^[29]

See also[edit]

Pulse 100

References[edit]

1. ^ ^abcCronin, T.M. (2012). 'Rapid sea-level rise'. Quaternary Science Reviews. 56: 11–30. Bibcode:2012QSRv...56...11C. doi:10.1016/j.quascirev.2012.08.021.
2. ^Blanchon, P., and J. Shaw (1995) Reef drowning during the last deglaciation: Evidence for catastrophic sea-level rise and ice-sheet collapse. Geology. 23(1):4-8.
3. ^ ^abGornitz, Vivien (2009). Encyclopedia of paleoclimatology and ancient environments. Springer. p. 890 (Table S1). ISBN978-1-4020-4551-6.
4. ^Blanchon, P. (2011) Meltwater Pulses. In: Hopley, D. ed., pp. 683-690, Encyclopedia of Modern Coral Reefs: Structure, form and process. Springer-Verlag Earth Science Series, Springer Science, New York. ISBN9789048126408
5. ^Chambers, D. P.; Ries, J. C.; Urban, T. J. (2003). 'Calibration and Verification of Jason-1 Using Global Along-Track Residuals with TOPEX'. Marine Geodesy. 26 (3): 305. doi:10.1080/714044523.
6. ^Bindoff, NL; et al. 'Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Observations: Oceanic Climate Change and Sea Level'(PDF). Cambridge University Press. Archived from the original(PDF) on 2017-05-13. Retrieved 2010-06-26.Cite journal requires |journal= (help)
7. ^Bassett, S.E., Milne, G.A., Mitrovica, J.X., Clark, P.U., 2005. Ice sheet and solid Earth influences on far-field sea-level histories. Science 309:925–928.
8. ^Deschamps, P., N. Durand, E. Bard, B. Hamelin, G. Camoin, A.L. Thomas, G.M. Henderson, J. Okuno, and Y. Yokoyama, Yusuke (2012) Ice-sheet collapse and sea-level rise at the Bolling warming. Nature. 483(7391):559-564.
9. ^Tarasov, L., and W.R. Peltier (2006) A calibrated deglacial drainage chronology for the North American continent: evidence of an Arctic trigger for the Younger Dryas. Quaternary Science Reviews. 25:659–688.
10. ^Bentley, M.J., C.J. Fogwill, A.M. Le Brocq, A.L. Hubbard, D.E. Sugden, T.J. Dunai, and S.P.H.T. Freeman (2010) Deglacial history of the West Antarctic Ice Sheet in the Weddell Sea embayment: constraints on past ice volume change. Geology. 38(5):411-414.
11. ^Gregoire, Lauren J.; Payne, Antony J.; Valdes, Paul J. (2012). 'Deglacial rapid sea level rises caused by ice-sheet saddle collapses'(PDF). Nature. 487 (7406): 219–222. Bibcode:2012Natur.487..219G. doi:10.1038/nature11257. PMID22785319.
12. ^Gomez, N.; Gregoire, L. J.; Mitrovica, J. X.; Payne, A. J. (2015-05-28). 'Laurentide-Cordilleran Ice Sheet saddle collapse as a contribution to meltwater pulse 1A'(PDF). Geophysical Research Letters. 42 (10): 2015GL063960. Bibcode:2015GeoRL..42.3954G. doi:10.1002/2015GL063960. ISSN1944-8007.
13. ^Liu, Jean; Milne, Glenn A.; Kopp, Robert E.; Clark, Peter U.; Shennan, Ian (2016). 'Sea-level constraints on the amplitude and source distribution of Meltwater Pulse 1A'(PDF). Nature Geoscience. 9 (2): 130–134. Bibcode:2016NatGe...9..130L. doi:10.1038/ngeo2616.
14. ^Clark, P.U., R.B. Alley, L.D. Keigwin, J.M. Licciardi, S. Johnsen, and H. Wang (1996) Origin of the first global meltwater pulse following the last glacial maximum. Paleoceanography. 11(5):563-577.
15. ^Carlson, A.E., D.J. Ullman, F.S. Anslow, S. Faron, F. He, P.U. Clark, Z. Liu, and B.L. Otto-Bliesner (2012) Modeling the surface mass-balance response of the Laurentide ice sheet to Bolling warming and its contribution to Meltwater Pulse 1A. Earth and Planetary Science Letters. 315-316:24-29.
16. ^Gregoire, Lauren J.; Otto-Bliesner, Bette; Valdes, Paul J.; Ivanovic, Ruza (2016-01-01). 'Abrupt Bølling warming and ice saddle collapse contributions to the Meltwater Pulse 1a rapid sea level rise'. Geophysical Research Letters. 43 (17): 9130–9137. Bibcode:2016GeoRL..43.9130G. doi:10.1002/2016GL070356. ISSN1944-8007. PMC5053285. PMID27773954.
17. ^Robel, Alexander A.; Tsai, Victor C. (2018-11-16). 'A Simple Model for Deglacial Meltwater Pulses'. Geophysical Research Letters. 45 (21): 11, 742–11, 750. doi:10.1029/2018GL080884.
18. ^Golledge, N. R.; Menviel, L.; Carter, L.; Fogwill, C. J.; England, M. H.; Cortese, G.; Levy, R. H. (2014-09-29). 'Antarctic contribution to meltwater pulse 1A from reduced Southern Ocean overturning'. Nature Communications. 5: 5107. Bibcode:2014NatCo...5.5107G. doi:10.1038/ncomms6107. PMID25263015.
19. ^Brendryen, J.; Haflidason, H.; Yokoyama, Y.; Haaga, K. A.; Hannisdal, B. (2020-04-20). 'Eurasian Ice Sheet collapse was a major source of Meltwater Pulse 1A 14,600 years ago'. Nature Geoscience. 13: 363. doi:10.1038/s41561-020-0567-4.
20. ^Lin, Y.; Hibbert, F. D.; Whitehouse, P.L.; Woodroffe, S. A.; Purcell, A.; Shennan, I.; Bradley, S. L. (2021-04-01). 'A reconciled solution of Meltwater Pulse 1A sources using sea-level fingerprinting'. Nature Communications. 12: 2015. doi:10.1038/s41467-021-21990-y.
21. ^ ^abBiller, N.B. (2012) Evidence for Meltwater Pulse 1a in the Gulf of Mexico based on radiogenic isotopes of leachates.Archived 2015-09-24 at the Wayback Machine Undergraduate Thesis, Department of Geological Sciences University of Florida, Tallahassee, Florida. 39 pp.
22. ^ ^abMeckler, A.N., C.J. Schubert, P.A. Hochuli, B. Plessen, D. Birgel, B.P. Flower, K.-U. Hinrichs, and G.H. Haug (2008) Glacial to Holocene terrigenous organic matter input to sediments from Orca Basin, Gulf of Mexico.Archived 2016-03-04 at the Wayback Machine Earth and Planetary Science Letters 272 (2008) 251–263.
23. ^Marchitto, T.M. K.-Y. Wei (1995) History of Laurentide meltwater flow to the Gulf of Mexico during the last deglaciation, as revealed by reworked calcareous nannofossils Geology. 23(9):779-782.
24. ^Kennett, P., K. Elmstrom, and N. Penrose (1985) The last deglaciation in orca basin, gulf of Mexico: High-resolution planktonic foraminiferal changes. Palaeogeography, Palaeoclimatology, Palaeoecology. 50(1):189-216.
25. ^ ^abcAharon, P. (2003) Meltwater Flooding Events in the Gulf of Mexico Revisited: Implications for Rapid Climate Changes During the Last Deglaciation. Paleoceanography. 18(4):3-1 to 3-13.
26. ^Aharon, P. (2006) Entrainment of meltwaters in hyperpycnal flows during deglaciation superfloods in the Gulf of Mexico. Earth and Planetary Science Letters. 241:260–270.
27. ^ ^abWeber, M.E., P.U. Clark, G. Kuhn, A. Timmermann, D. Sprenk, R. Gladstone, X. Zhang, G. Lohmann, L. Menviel, M.O. Chikamoto, T. Friedrich, and C. Ohlwein (2014) Millennial-scale variability in Antarctic ice-sheet discharge during the last deglaciation. Nature. 510(7503):134–138.
28. ^Clark, P.U., J.X. Mitrovica, G.A. Milne, and M.E. Tamisiea (2002) Sea-level fingerprintingas a direct test for the source of global meltwater pulse IA. Science 295, 2438–2441.
29. ^Deschamp, P., N. Durand, E. Bard, B. Hamelin, G. Camoin, A.L. Thomas, G. M. Henderson, J. Okuno, and Y. Yokoyama (2012) Ice-sheet collapse and sea-level rise at the Bølling warming 14,600 years ago. Nature. 483(7391):559-64.

External links[edit]

• Gornitz, V. (2007) Sea Level Rise, After the Ice Melted and Today. Science Briefs, NASA's Goddard Space Flight Center. (January 2007)
• Gornitz, V. (2012) The Great Ice Meltdown and Rising Seas: Lessons for Tomorrow. Science Briefs, NASA's Goddard Space Flight Center. (June 2012)
• Liu, J.P. (2004) Western Pacific Postglacial Sea-level History., River, Delta, Sea Level Change, and Ocean Margin Research Center, Marine, Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC.

Pulse 1003